CN109653080A - Liquid quality dual-tuning vibration reduction device and its assembly method - Google Patents

Liquid quality dual-tuning vibration reduction device and its assembly method Download PDF

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Publication number
CN109653080A
CN109653080A CN201811477280.XA CN201811477280A CN109653080A CN 109653080 A CN109653080 A CN 109653080A CN 201811477280 A CN201811477280 A CN 201811477280A CN 109653080 A CN109653080 A CN 109653080A
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China
Prior art keywords
ball
screw
flywheel
upper cover
cover plate
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CN201811477280.XA
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CN109653080B (en
Inventor
温华兵
张坤
张帆
常程威
刘伟
孙标
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

It further include that ball-screw is used to container assemblies the invention discloses a kind of liquid quality dual-tuning vibration reduction device, including pedestal, top cover and rubber-metal composite members;Used container assemblies include lead screw bolt, lead screw bolt one end passes through top cap central bore and stretches out upwards, the other end is set in pedestal stepped hole, the ball screw part of lead screw bolt is equipped with feed screw nut by ball, the outer cover of feed screw nut is equipped with rotary flyweights and rolling bearing, the inner ring of rolling bearing is positioned by the convex shoulder of feed screw nut and the convex shoulder of rotary flyweights, in the outer ring installation of rolling bearing and the stepped hole of pedestal.Ball-screw is used to container assemblies design inside rubber-metal composite members and formed supporting role in parallel by the present invention, it is compact-sized, ball-screw, which is used to container assemblies, has excellent damping property to low-frequency vibration, compensates for the bad disadvantage of rubber shock absorber low frequency vibration damping performance.

Description

Liquid quality dual-tuning vibration reduction device and its assembly method
Technical field
The present invention relates to a kind of liquid quality dual-tuning vibration reduction device and its assembly methods, are specifically designed a kind of with ball wire Thick stick formula is used to the liquid quality dual-tuning vibration reduction device and its assembly method of container assemblies, belongs to antivibration area.
Background technique
With the continuous construction of modern city, building increasingly tends to high-rise, Super High development, in order to meet production and living It needs, the span of bridge is also increasing, and civil engineering structure increasingly develops towards high, big, light, soft direction, especially outstanding The extensive construction of type bridge is hung, the span record of bridge constantly refreshes.Although these development provide for the production and living of people Convenient, still, the structural vibration frequency of high-rise and Longspan Bridge is low, and damping is small, in earthquake, high wind or the vehicles Structural response under equal dynamic excitations is very big, is easy to happen resonance, it is necessary to be controlled, not so gently then cause driving, pedestrian not It is suitable, cause pedestrian panic, it is heavy then because respond it is excessive cause structural fatigue to destroy or even dynamic buckling, to generate bridge collapse, It influences it and uses function.Therefore, solve the problems, such as that this kind of tower buildings, large span low frequency configuration object occur destructive resonance and are It must be taken into consideration in modern construction.
Liquid quality dual-tuning vibration reduction device is a kind of effective vibration control apparatus, its intrinsic frequency is adjusted to close The natural frequency of vibration of structure, is then fitted into structure.When structure is vibrated by exciting force interference, cause being total to for damper Vibration, reacts on structure itself using the vibrating inertia force of tuning quality, so that exciting force is offset, meanwhile, the quality of damper Damping liquid movement is pushed when block moves, keeps its wave amplitude bigger, and the energy for the principal oscillation system that is conducive to absorb and dissipate reaches reduction The purpose of structural response.
Patent No. CN200410087664.2, the invention of entitled " oriented vertical adjustable tuning mass bumper " are special Benefit discloses a kind of oriented vertical adjustable tuning mass bumper, it is one by spring, damper and muti-piece single steel plate Vibrational system composed by the mass block being formed by stacking, when it is mounted in structure, intrinsic frequency is adjusted to close to structure The natural frequency of vibration, structural vibration causes its resonance, and the vibrating inertia force of tuning mass bumper reacts on its structure sheet Body achievees the purpose that reduce structural response.Single steel plate is superimposed to form mass block by the invention, is connected by screw bolts, Quality can flexible modulation, when the frequency of tuning mass bumper needs to be tuned, only need to change the thickness of steel plate can be real It is existing.However, the tuning mass bumper only offsets exciting force using the vibrating inertia force of sole mass block, it is very big if you need to offset Exciting force when, then need the mass block of itself to have very big quality, not only will increase the manufacturing cost of damper in this way, can also Installation for scene is fixed and dismantlement work increases many problems;In addition, the damper vibration suppression frequency band is narrow, it is sensitive to frequency tuning Property is higher;Meanwhile the damper is only capable of reducing the reaction in one direction of structure, and actually this kind of works of Longspan Bridge is same When vertical and laterally there may be larger vibrations, it is therefore, not economical enough and practical problem cannot be fully solved, so engineering Application value is subject to certain restrictions.
Summary of the invention
The purpose of the invention is to overcome above-mentioned technical problem of the existing technology and defect, a kind of liquid matter is provided Measure dual-tuning vibration reduction device.
In order to achieve the above objectives, the present invention realizes that purpose is adopted the technical scheme that: a kind of liquid quality double tunning subtracts Shake device, including upper cover plate and lower case, the upper cover plate be mounted in the lower case, the upper cover plate and the lower case it Between form seal cavity, the seal cavity be provided with it is used hold component and damping fluid, used the appearances component includes on connection is described The ball-screw of cover board and the lower case, is equipped with flywheel on the ball-screw, the flywheel and the ball-screw it Between form ball guide screw nat, the side of the flywheel is equipped with the first thrust bearing, and the other side is equipped with the second thrust bearing, institute It states and is equipped with the first spring, the bottom plate of second thrust bearing and the lower case between the first thrust bearing and the upper cover plate Between be equipped with second spring.
Further, the capacity of the damping fluid is the 70%-85% of the seal cavity volume, and the upper cover plate is equipped with Filler, the filler are blocked by plug screw, and sealing ring is equipped between the plug screw and the upper cover plate.
Further, the circumferential surface of the flywheel is equipped with the external baffle of flywheel.
Further, the upper cover plate middle inside and the lower case bottom plate middle inside are equipped with boss, the rolling Ballscrew is located between two boss, and is fixed by the screw of both ends of the surface.
Further, interior circulation phase inverter and several balls, the ball are equipped between the ball-screw and the flywheel Circulation is realized by the interior circulation phase inverter.
Further, the coating surface of the ball-screw and the flywheel has an antiwear and anticorrosion protective layer, and the ball can be with High duty metal ball, material are preferably 30Cr or zirconium.
Further, the ball may be wear-resisting nonmetallic ball, and material is preferably the tree of ceramics or fibre reinforced Resin-based composite.
The present invention also provides the assembly methods of aforesaid liquid quality dual-tuning vibration reduction device, comprising:
The first step is installed the ball-screw on the bottom plate of the lower case;
The second spring is sleeved on outside the ball-screw by second step, one end of the second spring and it is described under The contacts baseplate of shell;
Third step, the two sides that first thrust bearing and second thrust bearing are installed to the flywheel respectively, and The flywheel is formed into ball guide screw nat by the ball and the ball-screw, the flywheel is rotated and makes described the The side of two thrust bearings is contacted with the second spring;
4th step, the outside that first spring pocket is mounted in the ball-screw, one end of first spring and institute State the first thrust bearing contacts;
The upper cover plate is mounted in the lower case by the 5th step, and the ball-screw and the upper cover plate are consolidated Fixed connection;
6th step, the filling damping fluid.
Working principle
The liquid quality dual-tuning vibration reduction device is mounted in main structure, when main structure vibration, the resonance meeting of damper The flywheel is driven to be rotated up and down movement, the rotation function of the flywheel storageWith The rotary inertia J of the flywheel is related with angular velocity of rotation ω, directly proportional to its rotary inertia, and square with angular velocity of rotation It is directly proportional.And the angular velocity of rotation of the flywheelWith the screw pitch p of the ball-screw and the flywheel Opposite up and down motion speedIt is related.Structural vibration frequency is bigger, and the angular velocity of rotation of the flywheel is higher, then the flywheel The rotation function of storage is more.By changing the rotary inertia of the flywheel and the screw pitch of the ball-screw, it is adjusted described The ability of flywheel storage rotation function should increase its rotary inertia in the case where the quality of the flywheel is certain as far as possible, with Improve its storage capacity.For the high-speed rotating flywheel, since rotation function is the hundreds of times of the flywheel upward-downward translation, To using the flywheel of smaller quality, when energy, especially low-frequency vibration when greatly absorbing structural vibration, is produced Raw energy.Therefore the used appearance component plays the role of quality amplification, several kilograms of rotary flyweights meeting to a certain extent It realizes the effect of several hundred kilograms even several tons of equivalent mass, vibrates generated energy so as to effective absorbing structure, especially It is energy caused by low-frequency vibration.Meanwhile structural vibration drive damping fluid shake generate it is dynamic with structure motion opposite direction Water pressure (is equivalent to damping force), to reduce the vibration of main structure.The flywheel main body and described when the flywheel moves The external baffle of flywheel pushes the damping liquid movement, and the external baffle of the flywheel that the periphery of flywheel surface is equipped with makes its wave amplitude It is bigger, it absorbs and the energy for the principal oscillation system that dissipates.Using the coupling of fluid and solid, not only make the parameter tune of damper It is whole more convenient, and make its effectiveness in vibration suppression more preferably.
Compared with prior art, technical solution of the present invention has the advantage that
1. the used component that holds of ball-screw is under big displacement using the used component that holds of ball-screw as the control structure of damper With good inertia, damper is preferably buffered and has waved and make structure more steady;
2. the present invention is external equipped with flywheel in flywheel external peripheral surface compared to traditional liquid quality dual-tuning vibration reduction device Baffle, flywheel main body and baffle push damping liquid movement to will increase damping when flywheel moves, and keep its wave amplitude bigger, are more advantageous to suction It receives and the energy for the principal oscillation system that dissipates;
3. the used component that holds of ball-screw works in damping fluid, damping fluid provides the resistance stablized and convenient for adjusting to damper Buddhist nun and anti-corrosion environment, avoid the dry friction between ball-screw, to prolong the service life;
4. being subtracted using the used mass of vibration held component and vibrational system can be significantly increased of ball-screw compared to tuning quality Shake device, and present invention decreases the quality of a large amount of mass blocks and volumes, has compressed installation space and the structure weight bearing of damper, more Lightweight, considerably reduces manufacturing cost under the premise of improving stability, therefore economic, energy conservation, has higher vibration suppression Efficiency and higher parametric stability, thus engineering application value with higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention;
Fig. 2 is the top view of upper cover plate in the embodiment of the present invention;
Fig. 3 is the enlarged drawing of ball guide screw nat in the embodiment of the present invention;
Fig. 4 is the sectional view of flywheel in the embodiment of the present invention;
In figure: 1 be bolt, 2 be upper cover plate, 3 be damping fluid, 4 be screw, 5 be the first spring, 6 be the first thrust bearing, 7 it is filler port, 8 be plug screw, 9 be gasket, 10 be flywheel, 11 be the second thrust bearing, 12 be ball-screw, 13 is the second bullet Spring, 14 be ball, 15 be lower case, 16 be the external baffle of flywheel, 17 be installation fixation hole, 18 be interior circulation phase inverter, 19 be Seal cavity, 20 hold component to be used.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, and in conjunction with attached drawing and case study on implementation, The present invention is further described in detail.It should be appreciated that specific implementation case described herein is used only for explaining this Invention, is not intended to limit the present invention.
As illustrated in fig. 1 and 2, a kind of liquid quality dual-tuning vibration reduction device, including upper cover plate 2 and lower case 15, the upper cover Plate 2 is mounted in the lower case 15 by bolt 1, and gasket 9, institute are equipped between the upper cover plate 2 and the lower case 15 Formation seal cavity 19 between upper cover plate 2 and the lower case 15 is stated, the seal cavity 19 is provided with used appearance component 20 and resistance Buddhist nun's liquid 3, the used component 20 that holds includes the ball-screw 12 for connecting the upper cover plate 2 and the lower case 15, the ball wire Flywheel 10 is installed on thick stick 12, forms ball guide screw nat, the flywheel between the flywheel 10 and the ball-screw 12 10 side is equipped with the first thrust bearing 6, and the other side is equipped with the second thrust bearing 11, first thrust bearing 6 with it is described on It is equipped with the first spring 5 between cover board 2, second spring is equipped between second thrust bearing 11 and the bottom plate of the lower case 15 13, the bottom plate of the lower case 15 is equipped with installation fixation hole 17.
The capacity of the damping fluid 3 is the 70%-85% of 19 volume of seal cavity, and the upper cover plate 2, which is equipped with, to be added Geat 7, the filler 7 are blocked by plug screw 8, and sealing ring is equipped between the plug screw 8 and the upper cover plate 2.
The circumferential surface of the flywheel 10 is equipped with the external baffle 16 of flywheel.
2 middle inside of upper cover plate and 15 bottom plate middle inside of the lower case are equipped with boss, the ball wire Thick stick 12 is located between two boss, and fixed by the screw 4 of both ends of the surface.
As shown in figure 3, being equipped with interior circulation phase inverter 18 and several balls between the ball-screw 12 and the flywheel 10 14, the ball 14 realizes circulation by the interior circulation phase inverter 18.
The coating surface of the ball-screw 12 and the flywheel 10 has antiwear and anticorrosion protective layer, and the ball 14 is high-strength Spend metal ball, material 30Cr.
Assembly method
The assembly method of aforesaid liquid quality dual-tuning vibration reduction device, comprising:
The first step is installed the ball-screw 12 on the bottom plate of the lower case 15;
The second spring 13 is sleeved on outside the ball-screw 12 by second step, one end of the second spring 13 with The contacts baseplate of the lower case 15;
First thrust bearing 6 and second thrust bearing 11 are installed the two of the flywheel 10 by third step respectively Side, and the flywheel 10 is formed into ball guide screw nat with the ball-screw 12 by the ball 14, rotate described fly Wheel 10 contacts the side of second thrust bearing 11 with the second spring 13;
4th step, the outside that first spring 5 is sleeved on to the ball-screw 12, one end of first spring 5 It is contacted with first thrust bearing 6;
The upper cover plate 2 is mounted in the lower case 15 by the 5th step, and by the ball-screw 12 and the upper cover Plate 2 is fixedly connected;
6th step, the filling damping fluid 3.
The foregoing is intended to be a preferred embodiment of the present invention.Certainly, the present invention can also have other a variety of implementations Example, without deviating from the spirit and substance of the present invention, anyone skilled in the art, when can according to this Various corresponding changes and modifications are made in invention.It is all that technical solution is formed by using equivalent substitution or equivalent transformation, should all it belong to In the protection scope of the appended claims of the present invention.

Claims (8)

1. a kind of liquid quality dual-tuning vibration reduction device, it is characterised in that: including upper cover plate (2) and lower case (15), the upper cover Plate (2) is mounted on the lower case (15), forms seal cavity between the upper cover plate (2) and the lower case (15) (19), the seal cavity (19) is provided with used appearance component (20) and damping fluid (3), and the used appearance component (20) includes connection institute The ball-screw (12) of upper cover plate (2) and the lower case (15) is stated, flywheel (10), institute are installed on the ball-screw (12) It states and forms ball guide screw nat between flywheel (10) and the ball-screw (12), the side of the flywheel (10) is equipped with first Thrust bearing (6), the other side is equipped with the second thrust bearing (11), between first thrust bearing (6) and the upper cover plate (2) Equipped with the first spring (5), second spring is equipped between second thrust bearing (11) and the bottom plate of the lower case (15) (13)。
2. a kind of liquid quality dual-tuning vibration reduction device according to claim 1, it is characterised in that: the damping fluid (3) Capacity is the 70%-85% of the seal cavity (19) volume, and the upper cover plate (2) is equipped with filler (7), the filler (7) it is blocked by plug screw (8), sealing ring is equipped between the plug screw (8) and the upper cover plate (2).
3. a kind of liquid quality dual-tuning vibration reduction device according to claim 1, it is characterised in that: the circle of the flywheel (10) Perimeter surface is equipped with the external baffle of flywheel (16).
4. a kind of liquid quality dual-tuning vibration reduction device according to claim 1, it is characterised in that: in the upper cover plate (2) Middle side part and the lower case (15) bottom plate middle inside are equipped with boss, and the ball-screw (12) is located at two boss Between, and it is fixed by the screw of both ends of the surface (4).
5. a kind of liquid quality dual-tuning vibration reduction device according to claim 1, it is characterised in that: the ball-screw (12) Interior circulation phase inverter (18) and several balls (14) are equipped between the flywheel (10), the ball (14) passes through follows in described Ring phase inverter (18) realizes circulation.
6. a kind of liquid quality dual-tuning vibration reduction device according to claim 5, it is characterised in that: the ball-screw (12) There is antiwear and anticorrosion protective layer with the coating surface of the flywheel (10), the ball (14) is high duty metal ball, and material is excellent It is selected as 30Cr or zirconium.
7. a kind of liquid quality dual-tuning vibration reduction device according to claim 5, it is characterised in that: the ball-screw (12) There is antiwear and anticorrosion protective layer with the coating surface of the flywheel (10), the ball (14) is wear-resisting nonmetallic ball, and material is excellent It is selected as the polymer matrix composites of ceramics or fibre reinforced.
8. a kind of assembly method of liquid quality dual-tuning vibration reduction device according to any one of claims 1 to 7, feature exist In including the following steps:
The first step is installed the ball-screw (12) on the bottom plate of the lower case (15);
The second spring (13) is sleeved on the ball-screw (12) outside by second step, one end of the second spring (13) With the contacts baseplate of the lower case (15);
First thrust bearing (6) and second thrust bearing (11) are installed the flywheel (10) by third step respectively Two sides, and the flywheel (10) are formed into ball guide screw nat, rotation by the ball (14) and the ball-screw (12) Turning the flywheel (10) contacts the side of second thrust bearing (11) with the second spring (13);
4th step, the outside that first spring (5) is sleeved on to the ball-screw (12), the one of first spring (5) End is contacted with first thrust bearing (6);
The upper cover plate (2) is mounted on the lower case (15) by the 5th step, and by the ball-screw (12) and it is described on Cover board (2) is fixedly connected;
6th step, the filling damping fluid (3).
CN201811477280.XA 2018-12-05 2018-12-05 Liquid mass double-tuned shock absorber and assembling method thereof Active CN109653080B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485267A (en) * 2019-09-03 2019-11-22 哈尔滨工业大学(深圳) A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid
CN111501430A (en) * 2020-04-28 2020-08-07 上海工程技术大学 Steel rail vibration absorber structure with ball screw combined device as vibrator
CN113756463A (en) * 2021-09-13 2021-12-07 合肥工业大学 Damper for tower
CN114370478A (en) * 2021-12-29 2022-04-19 同济大学 Inertial volume type nonlinear energy trap vibration damping system with adjustable nonlinear rigidity
CN115257680A (en) * 2022-09-05 2022-11-01 柏瑞科(上海)轨道交通科技有限公司 Vibration reduction type electromechanical braking unit suitable for urban rail vehicle

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US20040060383A1 (en) * 2002-08-12 2004-04-01 Sankyo Seiki Mfg. Co., Ltd. Automatic balancing device and manufacturing method therefor
CN102494080A (en) * 2011-11-15 2012-06-13 江苏大学 Integral shock absorber device of inertial container and damper in coaxial parallel connection
CN102937159A (en) * 2012-10-31 2013-02-20 江苏大学 Integrated hydro-pneumatic spring device
CN205173362U (en) * 2015-11-27 2016-04-20 江苏铁科新材料股份有限公司 Be used to hold and rubber combined shock absorber with wide band vibration damping
CN106763460A (en) * 2017-01-17 2017-05-31 江苏科技大学 A kind of peculiar to vessel the subtracting of ball screw type shakes vibration damping support device
CN108662072A (en) * 2018-07-02 2018-10-16 浙江大学 A kind of Parameter adjustable inertia mass damper for model suspension cable damping test

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040060383A1 (en) * 2002-08-12 2004-04-01 Sankyo Seiki Mfg. Co., Ltd. Automatic balancing device and manufacturing method therefor
CN102494080A (en) * 2011-11-15 2012-06-13 江苏大学 Integral shock absorber device of inertial container and damper in coaxial parallel connection
CN102937159A (en) * 2012-10-31 2013-02-20 江苏大学 Integrated hydro-pneumatic spring device
CN205173362U (en) * 2015-11-27 2016-04-20 江苏铁科新材料股份有限公司 Be used to hold and rubber combined shock absorber with wide band vibration damping
CN106763460A (en) * 2017-01-17 2017-05-31 江苏科技大学 A kind of peculiar to vessel the subtracting of ball screw type shakes vibration damping support device
CN108662072A (en) * 2018-07-02 2018-10-16 浙江大学 A kind of Parameter adjustable inertia mass damper for model suspension cable damping test

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485267A (en) * 2019-09-03 2019-11-22 哈尔滨工业大学(深圳) A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid
CN111501430A (en) * 2020-04-28 2020-08-07 上海工程技术大学 Steel rail vibration absorber structure with ball screw combined device as vibrator
CN113756463A (en) * 2021-09-13 2021-12-07 合肥工业大学 Damper for tower
CN114370478A (en) * 2021-12-29 2022-04-19 同济大学 Inertial volume type nonlinear energy trap vibration damping system with adjustable nonlinear rigidity
CN115257680A (en) * 2022-09-05 2022-11-01 柏瑞科(上海)轨道交通科技有限公司 Vibration reduction type electromechanical braking unit suitable for urban rail vehicle
CN115257680B (en) * 2022-09-05 2024-04-16 马天和 Damping type electromechanical braking unit suitable for urban rail vehicle

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