CN109537971A - A kind of friction energy-dissipating damper - Google Patents
A kind of friction energy-dissipating damper Download PDFInfo
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- CN109537971A CN109537971A CN201811623162.5A CN201811623162A CN109537971A CN 109537971 A CN109537971 A CN 109537971A CN 201811623162 A CN201811623162 A CN 201811623162A CN 109537971 A CN109537971 A CN 109537971A
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- transverse slat
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- stringer board
- damper
- face gear
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- 238000013016 damping Methods 0.000 abstract description 15
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
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- 230000006835 compression Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
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- 230000000703 anti-shock Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Classifications
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- 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
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- 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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of friction energy-dissipating dampers, including mobile board device and auxiliary holding device, which is characterized in that the damper further includes face gear, and the transverse slat group and stringer board group of the mobile board device are interconnected；The face gear is arranged in pairs in the junction of the transverse slat group and stringer board group, and the face of the face gear is simultaneously complementary；The auxiliary holding device is located at the upper and lower part of the face gear regulating device.The damper startup power is lower, after starting, can adjust the damping force and energy dissipation capacity of generation according to damper deformation extent.
Description
Technical field
The present invention relates to buildings, mechanical structure antivibration area, in particular to a kind of friction energy-dissipating damper.
Background technique
In terms of energy-consumption shock-absorption device is the important composition of modern architecture antishock device, consumed energy by being arranged in building structure
Damper carrys out earthquake energy, mitigates major structure of construction and destroys, to achieve the purpose that antidetonation.Pivoting friction damper is
One kind of energy consumption frcition damper.The mechanism that pivoting friction damper carries out vibration control to structure is: structure is in earthquake load
Effect is lower to occur lateral deformation, and the damper being arranged in the structure is deformed therewith, converts damper machine for translation deformation
Rotation inside structure helps structure dissipation energy by the friction that rotation generates, reduces structure relative storey displacement, improves knot to reach
The purpose of structure shock resistance.
However, traditional pivoting friction damper only has two states: when not deforming (1), not starting energy consumption, damp
Device is equivalent to a rigid connecting components；(2) after deforming, starting energy consumption, direction and directional velocity are on the contrary, and hinder
Buddhist nun's device power output is invariable.In general, building, bridge or mechanical structure undergo the dynamic loadings such as wind, Pedestrians and vehicles, earthquake, rub
The startup power for wiping damper is generally arranged according to the reaction of dynamic loading flowering structure.If load action is smaller, frcition damper
Do not start generally, both ends deform the effect of not consuming energy close to zero.
Technical staff studies pivoting friction damper.Such as patent CN100338318C provides one kind and is used for
The frcition damper of structure, the damper are made of the structure member connected in the rotational engagement part of friction or viscoelastic damping,
Due to the damping action of fastener, the relative movement between structure member is limited, and clamping element is equipped between fastener, is being engaged
Part keeps clamping force when rotating.The damper considers damping force required when structure rotation displacement.
Patent CN103874812A provides a kind of passive type damper, which has parallel board group and vertical panel
Group is equipped with cushion blocking between parallel board group and vertical board group, cushion blocking and plate overlap each other in an alternating manner, parallel board group and hangs down
The rotary joint of straight panel group is equipped with hole, is inserted into connecting pin or bolt in hole, when deformation occurs for Circumscribed structure, connecting pin is mentioned
For scheduled clearance amount, so that connecting pin is moved to predetermined position, and damping force is generated.
Currently, startup power needed for pivoting friction damper is larger, it is equivalent to an articulated object before activation；Damper
It contributes after starting and consumes energy invariable, the application that applied external force changes greatly can not be adapted to.
Summary of the invention
In order to solve the above technical problems, the damper has pairs of the present invention provides a kind of friction energy-dissipating damper
Face gear design, reduce the startup power of the damper；After starting, as change in displacement increases, power output also persistently increases,
Energy consumption gradually becomes strong.The damper can be realized the damping force and energy dissipation capacity that generation is adjusted according to damper deformation extent
Purpose.
The damper provided by the invention, including mobile board device and auxiliary holding device, which is characterized in that described
Damper further includes face gear, and the transverse slat group and stringer board group of the mobile board device are interconnected；The face gear is in couples
The junction of the transverse slat group and stringer board group is set, and the face of the face gear is simultaneously complementary；The auxiliary clamping dress
Setting in the upper and lower part of the face gear regulating device.
The mobile board device includes transverse slat group, stringer board group, friction plate and bolt；The transverse slat group includes several piece in thickness
The transverse slat that direction stacks is spent, the transverse slat group is at least two groups, and every group of transverse slat group includes at least one piece of transverse slat；The stringer board group packet
The stringer board that several piece is stacked in thickness direction is included, the stringer board group is at least one group, and every group of stringer board group includes at least two pieces of stringer boards；Institute
The placement of transverse slat horizontal cross is stated, the stringer board is placed horizontally and vertically in transverse slat, and the transverse slat and stringer board are alternately placed；The cross
The outer point of plate connects controlled structures, and damping force size according to actual needs adjusts the quantity of the transverse slat and stringer board.
Preferably, the material of the transverse slat and stringer board is steel.
Between the transverse slat, stringer board, transverse slat and stringer board and upper and lower other components are equipped with through-hole at overlapping place center, institute
It states bolt and passes through the through-hole in a thickness direction, it will be between transverse slat, stringer board, transverse slat and stringer board and upper and lower other components are connected
Get up；Nut is in the lower end of bolt, all components that fixing bolt passes through.The bolt is by all parts string of the damper
It is associated in same thickness position, all parts upper and lower surface is made to contact with each other.
Preferably, the bolt is high-strength bolt.
The friction plate is located in the handover region between the transverse slat and stringer board, the drive of transverse slat and stringer board in external loads
When dynamic lower generation rotation displacement, friction torque is generated on the friction plate, friction torque provides the damping force of damper deformation,
The damper realizes energy consumption, and the friction plate avoids transverse slat and stringer board from generating contact and wears, and provides biggish friction
Coefficient.Preferably, the friction plate is circle.
The face gear includes the flank of tooth of pairs of upper lower gear complementation, and the flank of tooth has protrusion construction, the protrusion
The plane that construction is constituted has the gradient；When not bearing the original state of external loads, the upper dedendum flank of the face gear is complete
Occlusion, after the damper starting, the transverse slat group and stringer board group drive the upper dedendum flank of face gear to produce relative rotation, up and down
The protrusion construction of the flank of tooth gradually increases the overall thickness of face gear by mutual slope surface of climbing.
The gradient of the protrusion construction starts frictional force according to the damper and is designed, the gradient and the damping
The deformation of device is corresponding relationship, realizes that the compression under different distortion between friction plate and transverse slat, stringer board changes, to change
Become the purpose of frictional force.
Preferably, consider design requirement and Machinability Evaluation, the gradient is 5-20 degree, it is furthermore preferred that the gradient is
9-16 degree.
Preferably, each bolt corresponds at least one described face gear.
Preferably, the face gear is arranged between the stringer board and transverse slat of top, middle part or lower section.
Preferably, the face gear is connected and fixed by screw and adjacent transverse slat and stringer board, it is furthermore preferred that the screw
It is evenly arranged around face gear border, makes the more uniform stabilization of power transmission of face gear and transverse slat, stringer board.
Preferably, the material of the face gear is hardness and the preferable steel alloy of wear-resisting property, it is furthermore preferred that the face tooth
The material of wheel is high-strength alloy carburizing steel.
The auxiliary holding device includes disk spring, backing plate and lock washer；The disk spring is arranged in the cross
The above and or below of board group and stringer board group, the center of disk spring are overlapped with the center of the bolt；The backing plate is located at dish
Above and below shape spring, the pressure of the bolt is uniformly transferred to transverse slat and stringer board overlapping region；The lock washer
It is located at below bolt head and above nut.
The pressure of the bolt is transferred to the outer diameter of disk spring by the lock washer and backing plate, then by transverse slat and
Stringer board is transferred to friction plate, and distribution of the compressive stress is focused primarily upon at the outer diameter of disk spring, provides required friction torque.Together
When, deformation of deformation of the disk spring under bolt pressure much larger than each plate thickness direction caused by temperature, temperature change
The deflection in each plate thickness direction influences the deflection of disk spring small under change, to guarantee the damping after temperature change
The damping force of device still maintains constant.
The lock washer prevents from transverse slat and stringer board from producing relative rotation causing bolt looseness, it is ensured that the damper is in work
Make the clamping force that all parts are kept under state.
The damper provided by the invention, the variation that the overall thickness by designing the face gear is deformed with damper,
Making the startup power of damper reduces, and lasting increase of contributing in subsequent displacements change procedure.The damper, which is placed in, to be built
In building structure, the initial face gear, which is in, is fully engaged against state；When extraneous lateral loads are smaller, external force is less than the resistance
When the startup power of Buddhist nun's device, damper is equivalent to a rigid connection, and both ends are not displaced；When external force is equal to or more than the damping
When the startup power of device, deformation takes place in damper, and the damper can start under lesser external force, realizes energy consumption；With
Structure lateral deformation become larger, the face gear up and down, which generates relative rotation, makes face gear overall thickness become larger, and the screw rod of bolt is drawn
Power increases, and the pressure between stringer board, transverse slat and friction plate will increase, and then improves the friction torque of friction plate, the resistance
The power output of Buddhist nun's device also accordingly increases, and energy dissipation capacity becomes strong.The flank of tooth gradient of face gear and the deformation of damper have certain corresponding
Relationship, to realize that the compression under different distortion between friction plate and stringer board transverse slat changes, to change the mesh of frictional force
's.
It is had the advantage that using technical solution provided by the invention
1, the startup power of damper provided by the invention is smaller, in the lesser situation of malformation, under wind action
It can start and consume energy, no longer as just an articulated object.
2, after damper starting provided by the invention, damper starts to deform, and power output rises with the increasing of deformation, consumes
Energy ability also increases accordingly.
3, damper provided by the invention can adjust startup power and maximum output according to actual needs.
4, damper provided by the invention is in low-stress state in the initial state, will not be due to not starting work for a long time
Rubbing surface is set to generate bonding.
Detailed description of the invention
Fig. 1 is the overlooking structure figure of damper of the present invention；
Fig. 2 is the side block diagram of damper of the present invention；
Fig. 3 is the overlooking structure figure of the face gear；
Fig. 4 is the side block diagram of the face gear；
Fig. 5 is the sectional structure chart of the face gear；
Fig. 6 is the hysteresis loop experimental data figure of conventional friction damper and damper of the present invention, wherein dotted line is
Conventional friction damper, solid line are damper of the present invention；
In attached drawing, 1- transverse slat group, the first transverse slat of 101-, the second transverse slat of 102-, 2- stringer board group, the first stringer board of 201-, 202-
Second stringer board, 203- third stringer board, 3- high-strength bolt, 301- nut, 4- friction plate, 5- face gear, 501- bulge-structure, 502-
Screw, 6- disk spring, 7- lock washer, the first backing plate of 8-, the second backing plate of 801-.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, it should be understood that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
A kind of friction energy-dissipating damper, including mobile board device, face gear 5 and auxiliary holding device；The movement is flat
The transverse slat group 1 and stringer board group 2 of panel assembly are interconnected；The engagement of the transverse slat group 1 and stringer board group 2 is arranged in the face gear 5
Position, the face up and down of the face gear 5 is simultaneously complementary, and the auxiliary holding device is located at the face gear 5, transverse slat group 1
With the outside of stringer board group 2.
The mobile board device includes transverse slat group 1, stringer board group 2, friction plate 4 and high-strength bolt 3, the face gear 5, institute
Stating auxiliary holding device includes disk spring 6, backing plate and lock washer 7.
The plan structure of damper as shown in Figure 1, two groups of 1 horizontal cross of transverse slat group are placed, the starting point of every group of transverse slat group 1 and
Terminal is misaligned；Two groups of stringer board groups 2 are placed horizontally and vertically in transverse slat group 1, the starting point and terminal alignment of every group of stringer board group 2；It is horizontal
Board group 1 and stringer board group 2 are equipped with through-hole at overlapping place center, and high-strength bolt 3 passes through through-hole in a thickness direction, by transverse slat group 1,
Stringer board group 2 and the component between them are together in series；Successively stack the second pad from top to bottom below the bolt head of high-strength bolt 3
Plate 801, disk spring 6, the first backing plate 8 and the first stringer board 201；The outer point of transverse slat group 1 connects controlled structures, according to controlled
The damping force size actually required of structure adjusts the quantity of transverse slat and stringer board.
The side view structure of damper is as shown in Fig. 2, transverse slat group 1 includes two pieces of transverse slats stacked in thickness direction, respectively
First transverse slat 101 and the second transverse slat 102；Stringer board group 2 includes three pieces of stringer boards stacked in thickness direction, respectively the first stringer board
201, the second stringer board 202 and third stringer board 203；Transverse slat and stringer board intersect stacking in a thickness direction, i.e., successively put from top to bottom
Set the first stringer board 201, the first transverse slat 101, the second stringer board 202, the second transverse slat 102 and third stringer board 203；The material of transverse slat and stringer board
Matter is steel.
High-strength bolt 3 passes through through-hole in a thickness direction, by other component strings between transverse slat, stringer board, transverse slat and stringer board
Connection gets up, all components that nut 301 is passed through in the lower end of high-strength bolt 3, fixed high-strength bolt 3.High-strength bolt 3 and nut
The all parts of the damper are connected to same thickness position by 301, and all parts upper and lower surface is made to contact with each other.
Friction plate 4 is arranged in the handover region between transverse slat and stringer board, and friction plate 4 is circle, i.e. the first transverse slat 101 and the
Between two stringer boards 202, between the second stringer board 202 and the second transverse slat 102, between the second transverse slat 102 and third stringer board 203, it is all provided with
When setting friction plate 4, transverse slat and stringer board rotation displacement occurring under the driving of external loads, friction torque is generated on friction plate 4,
Friction torque provides the damping force of damper deformation, and the damper realizes energy consumption.
The corresponding face gear 5 of each high-strength bolt 3, the setting of face gear 5 the first stringer board 201 and the first transverse slat 101 it
Between, face gear 5 includes the flank of tooth of pairs of upper lower gear complementation, and the flank of tooth has protrusion construction 501, do not bearing external loads
When original state, upper dedendum flank is fully engaged against, and after the damper starting, transverse slat group 1 and stringer board group 2 drive the upper of face gear 5
Dedendum flank produces relative rotation, upper dedendum flank protrusion construction 501 by mutual slope surface of climbing make the overall thickness of face gear 5 by
It is cumulative to add.The material of face gear 5 is hardness and the preferable high-strength alloy carburizing steel of wear-resisting property.
Disk spring 6 is arranged between the first backing plate 8 and the second backing plate 801, the center of disk spring 6 and high-strength bolt 3
Center be overlapped；The pressure of high-strength bolt 3 is transferred to the outer diameter of disk spring 6 by lock washer 7 and backing plate, then passes through transverse slat
It is transferred to friction plate 4 with stringer board, at the outer diameter that distribution of the compressive stress is focused primarily upon to disk spring 6, required friction is provided and is turned round
Square.Meanwhile deformation of the disk spring 6 under 3 pressure of high-strength bolt is much larger than the deformation in each plate thickness direction caused by temperature,
The deflection in each plate thickness direction influences the deflection of disk spring 6 small under temperature change, after guaranteeing temperature change
The damping force of the damper still maintains constant.
Backing plate is located above and below disk spring 6, and the pressure of high-strength bolt 3 is uniformly transferred to transverse slat and stringer board and is handed over
Folded region；Backing plate includes the first backing plate 8 and the second backing plate 801, the setting of the first backing plate 8 disk spring 6 and the first stringer board 201 it
Between, between disk spring 6 and third stringer board 203, the second backing plate 801 is arranged between disk spring 6 and nut 301, dish-shaped bullet
Between spring 6 and the bolt head of high-strength bolt 3.
Lock washer 7 is located between nut 301 and the second backing plate 801, the bolt head of high-strength bolt 3 and the second backing plate 801
Between.Lock washer 7 prevent transverse slat and stringer board produce relative rotation cause high-strength bolt 3 loosen, it is ensured that the damper is in work
Make the clamping force that all parts are kept under state.
The plan structure of face gear 5 as shown in figure 3, face gear 5 is circle, the addendum flank of face gear 5 by screw 503 with
First stringer board 201 is connected and fixed, and the dedendum flank of face gear 5 is connected and fixed by screw 503 with the first transverse slat 101,503 ring of screw
It is evenly arranged around 5 border of face gear, keeps the power transmission of face gear 5 and the first transverse slat 101 and the first stringer board 201 more uniform steady
It is fixed.
The side view structure of face gear 5 and cross-section structure at A-A and B-B are as shown in Figure 4,5, the upper lower tooth of face gear 5
Face has bulge-structure 501, and the plane that bulge-structure 501 is constituted has 9 degree of the gradient；Bulge-structure 501 is along face gear 5
Circumferencial direction is adjacently positioned.
The hysteresis loop of the present embodiment damper and the translation construction frcition damper without face gear 5, such as Fig. 6 institute
Show, the hysteresis loop of translation construction frcition damper is rectangle, since translation construction frcition damper is smaller in load action
When do not start, do not deform, do not start energy consumption；After translation construction frcition damper starting, deform, starting energy consumption,
And power output is invariable.
The hysteresis loop of the damper of the present embodiment is bowtie-shaped, is designed by the flank of tooth protrusion construction of face gear 5,
It is greatly lowered startup power, after damper starting, the thickness of face gear 5 is gradually increased, and the screw rod pulling force of bolt increases, stringer board,
Pressure between transverse slat and friction plate 4 will increase, and then improve the friction torque of friction plate 4, damper power output and energy consumption
It is lasting to increase, therefore hysteresis loop is changed into " bowtie-shaped " from traditional " rectangle ".
The embodiment of the present invention is described above in conjunction with figure, but the invention is not limited to above-mentioned specific realities
Mode is applied, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art exist
Under enlightenment of the invention, without breaking away from the scope protected by the purposes and claims of the present invention, many shapes can be also made
Formula, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of friction energy-dissipating damper, including mobile board device and auxiliary holding device, which is characterized in that the damper
It further include face gear, the mobile board device includes transverse slat group and stringer board group, and the transverse slat group and stringer board group are interconnected；
The junction of the transverse slat group and stringer board group is arranged in the face gear, and the face of the face gear is simultaneously complementary；It is described
Auxiliary holding device is located at the upper and lower part of the face gear.
2. damper according to claim 1, which is characterized in that the face gear includes that pairs of upper lower gear is complementary
The flank of tooth, the flank of tooth have protrusion construction, and the plane that the protrusion construction is constituted has the gradient.
3. damper according to claim 2, which is characterized in that the gradient is 5-20 degree, it is preferred that gradient 9-16
Degree.
4. damper according to claim 1-3, which is characterized in that the face gear be arranged in top,
Between middle part or the stringer board and transverse slat of lower section, the corresponding at least a pair of face gear of each bolt location.
5. damper according to claim 1-4, which is characterized in that the mobile board device further includes friction
Piece and bolt.
6. damper according to claim 1-5, which is characterized in that the transverse slat group includes several piece in thickness side
To the transverse slat of stacking, the transverse slat group is at least two groups, and every group of transverse slat group includes at least one piece of transverse slat；The stringer board group includes number
The stringer board that block is stacked in thickness direction, the stringer board group are at least one group, and every group of stringer board group includes at least two pieces of stringer boards；The cross
Plate horizontal cross is placed, and the stringer board is placed horizontally and vertically in transverse slat, and the transverse slat and stringer board are alternately placed；The transverse slat
Outer point connects controlled structures.
7. damper according to claim 1-6, which is characterized in that the bolt passes through cross in a thickness direction
Between plate, stringer board, transverse slat and stringer board and the through-hole of upper and lower other components.
8. damper according to claim 1-7, which is characterized in that the friction plate is located at the transverse slat and indulges
In handover region between plate.
9. damper according to claim 1-8, which is characterized in that the auxiliary holding device includes dish-shaped bullet
Spring, backing plate and lock washer.
10. damper according to claim 9, which is characterized in that the disk spring setting is in the transverse slat group and indulges
The above and or below of board group, the center of disk spring are overlapped with the center of the bolt；The backing plate is located at disk spring
Above and below；The lock washer is located at below bolt head and above nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811623162.5A CN109537971A (en) | 2018-12-28 | 2018-12-28 | A kind of friction energy-dissipating damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811623162.5A CN109537971A (en) | 2018-12-28 | 2018-12-28 | A kind of friction energy-dissipating damper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020252835A1 (en) * | 2019-06-20 | 2020-12-24 | 大连理工大学 | Shear-type steel truss coupling beam having friction dampers for fast post-earthquake recovery |
| CN112482600A (en) * | 2020-11-19 | 2021-03-12 | 东北林业大学 | Composite damper for reinforcing building frame |
| CN113882735A (en) * | 2021-09-30 | 2022-01-04 | 北京筑信润捷科技发展有限公司 | Rotary friction coupling beam damper |
| CN114645584A (en) * | 2022-04-16 | 2022-06-21 | 北京工业大学 | Rotary friction self-resetting damper |
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| CN112482600A (en) * | 2020-11-19 | 2021-03-12 | 东北林业大学 | Composite damper for reinforcing building frame |
| CN113882735A (en) * | 2021-09-30 | 2022-01-04 | 北京筑信润捷科技发展有限公司 | Rotary friction coupling beam damper |
| CN114645584A (en) * | 2022-04-16 | 2022-06-21 | 北京工业大学 | Rotary friction self-resetting damper |
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