CN108915332B - Laminated friction damper with pressure variable device - Google Patents
Laminated friction damper with pressure variable device Download PDFInfo
- Publication number
- CN108915332B CN108915332B CN201811094726.0A CN201811094726A CN108915332B CN 108915332 B CN108915332 B CN 108915332B CN 201811094726 A CN201811094726 A CN 201811094726A CN 108915332 B CN108915332 B CN 108915332B
- Authority
- CN
- China
- Prior art keywords
- friction
- plate
- groups
- plates
- 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
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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The application relates to a laminated friction damper with a pressure variable device, and belongs to the technical field of vibration control. The novel anti-friction device comprises a left baffle, a right baffle, a first friction plate, a second friction plate, a cover plate, an eccentric wheel and a supporting plate, wherein the left baffle and the right baffle are grid-shaped, and a plurality of groups of first friction plates and a plurality of groups of second friction plates are oppositely parallel and staggered and overlapped. And the cover plate is also provided with an eccentric wheel, and the eccentric wheel is connected with the right baffle plate through a spring. A plurality of parallel sliding grooves are respectively arranged on the second friction plate along the length direction, a plurality of groups of parallel bolt holes are respectively arranged on the first friction plate along the length direction, the bolt holes are correspondingly arranged with the sliding grooves, and the bolts can slide left and right in the sliding grooves. The damper reduces the positive pressure of the friction surface of the friction damper on the premise of not losing the output of the damper, and ensures that the friction damper has complex damping characteristics.
Description
Technical Field
The application relates to a friction damper, in particular to a laminated friction damper with a pressure variable device, which can be used for energy dissipation and shock absorption control of a building structure and belongs to the technical field of vibration control.
Background
The friction damper is a kind of damper which uses the friction force generated by the relative motion of friction surfaces under the pressurized environment to convert the external input energy into heat energy so as to consume the energy input into the building. The traditional friction damper gives the friction surface a certain pre-pressure by means of high-strength bolts and interference contact, and overcomes the sliding friction to generate relative motion under the action of earthquake load, so that the energy consumption purpose such as PALL friction damper, steel pipe friction damper, clamp plate rotation friction damper and the like is realized. However, due to uncertainty of earthquake action, difficulty in determining the sliding force of the friction damper is high, so that the friction damper has the problem that small earthquake and large earthquake cannot be considered. Meanwhile, uncertainty of friction performance of the friction surface under high stress, including time-dependent change of the friction performance of the surface under high prestress and possible damage of the friction surface caused by high stress generated in the loading process, is also an important problem of changing the instant performance of the friction damper and preventing the application of the friction damper. In order to solve the first problem, the earthquake working condition which can be adapted to the friction damper is wider, and a quasi-viscous friction energy consumer is proposed by Harbin university of Industrial Wu and Lemna minor. The friction damper has a hysteresis curve similar to that of a viscous damper through a certain friction plate geometric configuration. However, the damper still requires a high pre-compression force to the friction surface, and does not solve the second problem. Another solution to the first problem is a friction damper with complex damping characteristics, currently there are EDR friction dampers, quasi-linear friction dampers, etc. for this type of friction damper. The EDR friction damper provides positive pressure changing along with displacement for the friction surface by extruding the wedge through the spring, and the quasi-linear friction damper provides positive pressure changing along with displacement for the friction surface by interference contact changing along with displacement. This type of friction damper solves the first problem by providing a pre-compression free environment for the friction surfaces, but does not completely solve the second problem, the problem of the high stresses between the friction surfaces during operation of the damper having an adverse effect on the friction surfaces still exists. And the EDR friction damper has the defect of smaller force, and the friction surface of the quasi-linear friction damper is found to be damaged after the quasi-linear friction damper works for a long time. Literature indicates that: for the steel-steel friction surface, in order to ensure stable hysteresis performance of the damper, the normal stress of the contact surface during the operation of the damper should be reduced. But decreasing the interface positive pressure means that the damper force is reduced. Meanwhile, the friction surface of the friction damper can be worn in the use process. During running-in, the morphology of the friction pair contact surface is gradually changed by wear and plastic deformation of the contact peaks. The result of this phenomenon is a reduction in friction surface stress, a reduction in coefficient of friction, and ultimately a reduction in damper force.
Disclosure of Invention
In order to solve the defects in the prior art, to reduce the damage of positive pressure to the friction surface of the friction damper and enable the friction damper to adapt to wider earthquake working conditions, the application provides a laminated friction damper with a pressure varying device, so that the positive pressure of the friction surface of the friction damper is reduced on the premise of not losing the output of the damper, and the friction damper has a complex damping characteristic.
In order to solve the technical problems, the application adopts the following technical scheme:
the laminated friction damper with the pressure varying device comprises a left baffle, a right baffle, a first friction plate, a second friction plate, a cover plate, an eccentric wheel and a supporting plate, wherein the left baffle and the right baffle are both grid-shaped; the left baffle comprises a first vertical plate, a first fixed clamping plate and a first connecting plate, wherein a plurality of groups of first fixed clamping plates which are arranged in parallel are arranged on the right side of the first vertical plate, and the first connecting plate is vertically arranged in the middle of the left side of the first vertical plate; a plurality of groups of first friction plates which are arranged in parallel are fixedly connected to the upper side and the lower side of the plurality of groups of first fixed clamping plates in parallel; a plurality of groups of parallel bolt holes are respectively arranged on the first friction plate along the length direction, and a plurality of bolt holes are arranged in each group of bolt holes; the outer surfaces of the first friction plates positioned at the upper end and the lower end of the outer side are also provided with cover plates, and the bolt hole arrangement on the cover plates is correspondingly consistent with the bolt hole arrangement on the first friction plates; the left end of the cover plate is fixedly connected with the first friction plate and the first fixed clamping plate through pins; the cover plate is also provided with a group of support plates, an eccentric wheel is clamped in the support plates through bolts, and one end of the eccentric wheel is provided with a spring connecting plate; a hole is correspondingly formed in the cover plate at the lower end of the eccentric wheel, and the bottom end of the eccentric wheel is directly pressed on the first friction plate at the outer side; the right baffle comprises a second vertical plate, a second fixed clamping plate and a second connecting plate, a plurality of groups of second fixed clamping plates which are arranged in parallel are arranged on the left side of the second vertical plate, and the second connecting plate is vertically arranged in the middle of the right side of the second vertical plate; a plurality of groups of second friction plates which are arranged in parallel are clamped and fixed among the plurality of groups of second fixed clamping plates in parallel; the right end part of the second friction plate is fixedly connected with the second fixed clamping plate through a penetrating pin; a plurality of parallel sliding grooves are respectively arranged on the second friction plate along the length direction; the plurality of groups of first friction plates and the plurality of groups of second friction plates are arranged in a staggered and overlapped mode relative to each other; the sliding grooves correspond to the first friction plates and the plurality of groups of bolt holes on the cover plate, the plurality of groups of first friction plates and the plurality of groups of second friction plates are connected together through vertically arranged bolts, the two ends of each bolt are fixed through nuts, the nuts are not screwed, initial friction force between the first friction plates and the plurality of groups of second friction plates is ensured to be 0, and the bolts can slide left and right in the sliding grooves; the left sides of the two ends of the second vertical plate are respectively provided with a spring connecting plate, and the spring connecting plates on the second vertical plate are connected with the spring connecting plates on the eccentric wheel through springs.
Further, certain displacement distances are reserved between the first friction plate and the first vertical plate on the left side and between the second friction plate and the second vertical plate on the right side.
Further, the second riser vertical length is greater than the first riser vertical length.
Further, the second vertical plate is a vertical plate with a trapezoid cross section, and a connecting hole is formed in the second connecting plate; the first connecting plate is provided with a connecting hole.
Further, the number of the sliding grooves on the second friction plate is two, and the sliding grooves are respectively arranged on two sides of the second friction plate in the length direction.
Further, the bolt holes of the first friction plate are divided into two groups, and 9 bolt holes are formed in each group.
Further, the first friction plates are 6 groups, and the second friction plates are 5 groups.
The working principle is that when two ends of the damper are stretched, the spring connecting plate drives the spring to stretch, and the spring drives the eccentric wheel to rotate, so that the first friction plate and the second friction plate on the outer side are pressed, the friction damping force between the friction plates is improved, the greater the stretching distance is, the greater the pressing force and the resulting friction damping is, so that variable pressure is provided for the damper, and the friction damper has a complex damping characteristic.
Compared with the prior art, the application has the following technical effects:
the damper can achieve building energy dissipation and vibration reduction required damping force with smaller positive pressure than the traditional friction damper, and protects the friction surface from adverse effects caused by excessive positive pressure. In the service standby stage of the damper, the positive pressure of the friction surface is 0, so that the phenomenon that the performance of the friction surface of the damper changes along with time similar to that of the traditional friction damper is avoided.
Drawings
FIG. 1 is a schematic view of a laminated friction damper with a variable pressure device of the present application;
FIG. 2 is a top and bottom isometric view of FIG. 1;
FIG. 3 is a detail of a second friction plate of the present application;
FIG. 4 is a detailed view of a first friction plate of the present application;
FIG. 5 is a hysteresis curve obtained from a damper test of the present application.
Detailed Description
The following describes the embodiments of the present application in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the laminated friction damper with the variable pressure device of the present application comprises a left baffle plate 1, a right baffle plate 2, a first friction plate 5, a second friction plate 6, a cover plate 4, an eccentric wheel 3 and a support plate 7, wherein the left baffle plate 1 and the right baffle plate 2 are both in a grid shape. The left baffle 1 comprises a first vertical plate 11, a first fixed clamping plate 12 and a first connecting plate 13, wherein the first fixed clamping plates 12 of a plurality of groups of parallel arrangement are arranged on the right side of the first vertical plate 11, and the first connecting plate 13 is vertically arranged in the middle of the left side of the first vertical plate 11. A plurality of groups of first friction plates 5 which are arranged in parallel are fixedly connected on the upper side and the lower side of the plurality of groups of first fixed clamping plates 12 in parallel. The first friction plate 5 is provided with 2 groups of parallel bolt holes 9 along the length direction, and 9 bolt holes 9 are arranged in each group of bolt holes. The outer surface of the first friction plate 5 positioned at the upper end and the lower end of the outer side is also provided with a cover plate 4, and the arrangement of the bolt holes 9 on the cover plate 4 is correspondingly consistent with the arrangement of the bolt holes 9 on the first friction plate 5. The left end of the cover plate 4 is fixedly connected with the first friction plate 5 and the first fixed clamping plate 12 through pins. The cover plate 4 is also provided with a group of support plates 7, an eccentric wheel 3 is arranged in the support plates 7 through bolt clamping, and one end of the eccentric wheel 3 is provided with a spring connecting plate 8. A hole is correspondingly arranged at the position of the cover plate 4 at the lower end of the eccentric wheel 3, and the bottom end of the eccentric wheel 3 is directly pressed on the first friction plate 5 at the outer side. The right baffle 2 comprises a second vertical plate 21, a second fixing clamping plate 22 and a second connecting plate 23, wherein a plurality of groups of second fixing clamping plates 22 which are arranged in parallel are arranged on the left side of the second vertical plate 21, and the second connecting plate 23 is vertically arranged in the middle of the right side of the second vertical plate 21. A plurality of groups of second friction plates 6 which are arranged in parallel are clamped and fixed among the plurality of groups of second fixed clamping plates 22 in parallel. The right end of the second friction plate 6 is fixedly connected with the second fixed clamping plate 22 through a penetrating pin. The second friction plate 6 is provided with 2 parallel sliding grooves 10 along the length direction, and the two parallel sliding grooves are respectively arranged on two sides of the second friction plate 6 along the length direction. The first friction plates 5 and the second friction plates 6 are arranged in a staggered and overlapped mode in a relative parallel mode, the first friction plates are 6 groups, and the second friction plates are 5 groups. The sliding groove 10 corresponds to a plurality of groups of bolt holes 9 on the first friction plate 5 and the cover plate 4, and the plurality of groups of first friction plates 5 and the plurality of groups of second friction plates 6 are connected together through vertically arranged bolts, and the two ends of the bolts are fixed through nuts, but the nuts are not screwed down, so that initial friction force between the first friction plates 5 and the plurality of groups of second friction plates 6 is ensured to be 0, and the bolts can slide left and right in the sliding groove 10. The left sides of the two ends of the second vertical plate 21 are respectively provided with a spring connecting plate 8, and the spring connecting plates 8 on the second vertical plate 21 are connected with the spring connecting plates 8 on the eccentric wheel 3 through springs 100.
Wherein, a certain displacement distance is reserved between the first friction plate 5 and the first vertical plate 11 on the left side and between the second friction plate 6 and the second vertical plate 21 on the right side. Is convenient for a certain amount of left and right movement. The second riser 21 has a vertical length greater than the vertical length of the first riser 11. The second riser 21 is a riser with a trapezoid cross section, and the first connecting plate 13 and the second connecting plate 23 are provided with connecting holes.
The friction damper of the example can provide a complex damping hysteresis curve and achieve the goal of exchanging a smaller positive pressure for a larger damping force. Fig. 5 shows hysteresis curves obtained by testing the gear drive lead damper of the present embodiment. This example is capable of providing a damping force of 1.20kN at a displacement of 20 mm. As the spring rate increases and the number of pressure varying devices increases, the damper will increase.
The foregoing embodiments are merely illustrative of the technical solutions of the present application and are not intended to limit the present application, and variations of the technical solutions of the present application according to common knowledge in the art are within the scope of the present application, and in any case, the foregoing embodiments are merely illustrative, and the scope of the present application is defined by the scope of the appended claims.
Claims (5)
1. A laminated friction damper with a variable pressure device, characterized by: the device comprises a left baffle (1), a right baffle (2), a first friction plate (5), a second friction plate (6), a cover plate (4), an eccentric wheel (3) and a supporting plate (7), wherein the left baffle (1) and the right baffle (2) are grid-shaped; the left baffle plate (1) comprises a first vertical plate (11), a first fixed clamping plate (12) and a first connecting plate (13), wherein a plurality of groups of first fixed clamping plates (12) which are arranged in parallel are arranged on the right side of the first vertical plate (11), and the first connecting plate (13) is vertically arranged in the middle of the left side of the first vertical plate (11); a plurality of groups of first friction plates (5) which are arranged in parallel are fixedly connected on the upper side and the lower side of the plurality of groups of first fixed clamping plates (12) in parallel; a plurality of groups of parallel bolt holes (9) are respectively arranged on the first friction plate (5) along the length direction, and a plurality of bolt holes (9) are arranged in each group of bolt holes; the outer surfaces of the first friction plates (5) positioned at the upper and lower ends of the outer sides are also provided with cover plates (4), and the arrangement of bolt holes (9) on the cover plates (4) is correspondingly consistent with the arrangement of the bolt holes (9) on the first friction plates (5); the left end of the cover plate (4) is fixedly connected with the first friction plate (5) and the first fixed clamping plate (12) through pins; a group of support plates (7) are further arranged on the cover plate (4), an eccentric wheel (3) is arranged in the support plates (7) through bolt clamping, and a spring connecting plate (8) is arranged at one end of the eccentric wheel (3); a hole is correspondingly formed in the position of a cover plate (4) at the lower end of the eccentric wheel (3), and the bottom end of the eccentric wheel (3) is directly pressed on a first friction plate (5) at the outer side; the right baffle (2) comprises a second vertical plate (21), a second fixed clamping plate (22) and a second connecting plate (23), a plurality of groups of second fixed clamping plates (22) which are arranged in parallel are arranged on the left side of the second vertical plate (21), and the second connecting plate (23) is vertically arranged in the middle of the right side of the second vertical plate (21); a plurality of groups of second friction plates (6) which are arranged in parallel are clamped and fixed among the plurality of groups of second fixed clamping plates (22) in parallel; the right end part of the second friction plate (6) is fixedly connected with the second fixed clamping plate (22) through a penetrating pin; a plurality of parallel sliding grooves (10) are respectively arranged on the second friction plate (6) along the length direction; the plurality of groups of first friction plates (5) and the plurality of groups of second friction plates (6) are oppositely arranged in parallel and staggered and overlapped mode; the sliding groove (10) corresponds to a plurality of groups of bolt holes (9) on the first friction plate (5) and the cover plate (4), a plurality of groups of first friction plates (5) and a plurality of groups of second friction plates (6) are connected together through vertically arranged bolts, two ends of each bolt are fixed through nuts, the nuts are not screwed, initial friction force between the first friction plate (5) and the plurality of groups of second friction plates (6) is ensured to be 0, and the bolts can slide left and right in the sliding groove (10); the left sides of the two ends of the second vertical plate (21) are respectively provided with a spring connecting plate (8), and the spring connecting plates (8) on the second vertical plate (21) are connected with the spring connecting plates (8) on the eccentric wheel (3) through springs (100); a certain displacement distance is reserved between the first friction plate (5) and the first vertical plate (11) on the left side and between the second friction plate (6) and the second vertical plate (21) on the right side; the second riser (21) has a vertical length greater than the vertical length of the first riser (11).
2. A laminated friction damper with a variable pressure device as claimed in claim 1, wherein: the second vertical plate (21) is a vertical plate with a trapezoid cross section, and the second connecting plate (23) is provided with a connecting hole; the first connecting plate (13) is provided with a connecting hole.
3. A laminated friction damper with a variable pressure device as claimed in claim 1, wherein: the two sliding grooves (10) on the second friction plate (6) are respectively arranged at two sides of the length direction of the second friction plate (6).
4. A laminated friction damper with a variable pressure device as claimed in claim 1, wherein: the bolt holes (9) of the first friction plate (5) are two groups, and each group is provided with 9 bolt holes.
5. A laminated friction damper with a variable pressure device as claimed in claim 1, wherein: the first friction plates (5) are 6 groups, and the second friction plates (6) are 5 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094726.0A CN108915332B (en) | 2018-09-19 | 2018-09-19 | Laminated friction damper with pressure variable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094726.0A CN108915332B (en) | 2018-09-19 | 2018-09-19 | Laminated friction damper with pressure variable device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108915332A CN108915332A (en) | 2018-11-30 |
| CN108915332B true CN108915332B (en) | 2023-09-29 |
Family
ID=64408360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811094726.0A Active CN108915332B (en) | 2018-09-19 | 2018-09-19 | Laminated friction damper with pressure variable device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108915332B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485787B (en) * | 2019-08-08 | 2024-05-17 | 国核电力规划设计研究院有限公司 | Speed type friction damper |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542306A (en) * | 2003-04-28 | 2004-11-03 | 欧进萍 | Piezo-electric friction vibration-damper |
| CN101216087A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Plate-type friction-changing damper |
| CN201166077Y (en) * | 2008-01-18 | 2008-12-17 | 北京工业大学 | Plate type friction changeable damper |
| CN102094924A (en) * | 2010-12-20 | 2011-06-15 | 东南大学 | Adjustable damping combined vibration isolator |
| CN102334412A (en) * | 2010-07-15 | 2012-02-01 | 中国农业机械化科学研究院呼和浩特分院 | Variable-force damper for knotters |
| CN103088931A (en) * | 2011-11-08 | 2013-05-08 | 建研科技股份有限公司 | variable friction damper |
| CN104088374A (en) * | 2014-06-12 | 2014-10-08 | 清华大学 | Metal composite friction damper |
| CN104776143A (en) * | 2015-03-26 | 2015-07-15 | 上海大学 | Damping-variable friction damper capable of preventing lateral buckling |
| CN105351419A (en) * | 2015-11-27 | 2016-02-24 | 北京工业大学 | Plate-type centripetal friction damper with complex damping characteristics |
| CN105387115A (en) * | 2015-12-24 | 2016-03-09 | 北京工业大学 | Dual-compressed-spring flat plate type-centripetal variable friction damper |
| CN205134605U (en) * | 2015-11-21 | 2016-04-06 | 山东科技大学 | Viscous - friction damper can reset |
| JP2016142329A (en) * | 2015-02-02 | 2016-08-08 | 大成建設株式会社 | Friction damper |
| CN205639451U (en) * | 2016-04-05 | 2016-10-12 | 同济大学 | Friction -variable energy dissipation device |
| CN106436951A (en) * | 2016-10-18 | 2017-02-22 | 中国建筑第八工程局有限公司 | Snap-in two-stage friction energy dissipation damper |
| CN206360444U (en) * | 2016-12-30 | 2017-07-28 | 上海堃熠工程减震科技有限公司 | A kind of limit shearing formula underrelaxation friction-type anti-seismic damper |
| CN107143187A (en) * | 2017-06-30 | 2017-09-08 | 燕山大学 | Multi-layer plate-type SMA Piezoelectric anisotropy frcition dampers |
| KR101844041B1 (en) * | 2017-09-12 | 2018-03-30 | 주식회사 케이이테크 | Friction device with variable resistance force, and seismic device and friction damper using the same |
-
2018
- 2018-09-19 CN CN201811094726.0A patent/CN108915332B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542306A (en) * | 2003-04-28 | 2004-11-03 | 欧进萍 | Piezo-electric friction vibration-damper |
| CN101216087A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Plate-type friction-changing damper |
| CN201166077Y (en) * | 2008-01-18 | 2008-12-17 | 北京工业大学 | Plate type friction changeable damper |
| CN102334412A (en) * | 2010-07-15 | 2012-02-01 | 中国农业机械化科学研究院呼和浩特分院 | Variable-force damper for knotters |
| CN102094924A (en) * | 2010-12-20 | 2011-06-15 | 东南大学 | Adjustable damping combined vibration isolator |
| CN103088931A (en) * | 2011-11-08 | 2013-05-08 | 建研科技股份有限公司 | variable friction damper |
| CN104088374A (en) * | 2014-06-12 | 2014-10-08 | 清华大学 | Metal composite friction damper |
| JP2016142329A (en) * | 2015-02-02 | 2016-08-08 | 大成建設株式会社 | Friction damper |
| CN104776143A (en) * | 2015-03-26 | 2015-07-15 | 上海大学 | Damping-variable friction damper capable of preventing lateral buckling |
| CN205134605U (en) * | 2015-11-21 | 2016-04-06 | 山东科技大学 | Viscous - friction damper can reset |
| CN105351419A (en) * | 2015-11-27 | 2016-02-24 | 北京工业大学 | Plate-type centripetal friction damper with complex damping characteristics |
| CN105387115A (en) * | 2015-12-24 | 2016-03-09 | 北京工业大学 | Dual-compressed-spring flat plate type-centripetal variable friction damper |
| CN205639451U (en) * | 2016-04-05 | 2016-10-12 | 同济大学 | Friction -variable energy dissipation device |
| CN106436951A (en) * | 2016-10-18 | 2017-02-22 | 中国建筑第八工程局有限公司 | Snap-in two-stage friction energy dissipation damper |
| CN206360444U (en) * | 2016-12-30 | 2017-07-28 | 上海堃熠工程减震科技有限公司 | A kind of limit shearing formula underrelaxation friction-type anti-seismic damper |
| CN107143187A (en) * | 2017-06-30 | 2017-09-08 | 燕山大学 | Multi-layer plate-type SMA Piezoelectric anisotropy frcition dampers |
| KR101844041B1 (en) * | 2017-09-12 | 2018-03-30 | 주식회사 케이이테크 | Friction device with variable resistance force, and seismic device and friction damper using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108915332A (en) | 2018-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110273956B (en) | Torsional friction plate type metal damper | |
| CN211114191U (en) | Double-order friction damper | |
| CN109853370B (en) | Negative stiffness seismic isolation and reduction device for continuous beam | |
| WO2019024552A1 (en) | Self-resetting, friction pendulum three-dimensional seismic damping and isolation bearing | |
| CN106438805B (en) | A kind of pull rod guide type complex spring damper | |
| CN108915332B (en) | Laminated friction damper with pressure variable device | |
| CN110158803B (en) | Multidirectional damping and pulling-out resisting device of vibration isolation support and vibration isolation and damping method thereof | |
| CN210508604U (en) | Velocity type friction damper | |
| CN106382315B (en) | A kind of pull rod guide type spring-damper | |
| CN108035598B (en) | Semi-active/passive hybrid damping device | |
| CN101029668A (en) | Non-linear wedged buffering shock absorber | |
| CN103410238A (en) | Multidirectional friction tensile damper | |
| CN111425040B (en) | Spring-added friction damper | |
| CN115538835B (en) | Self-resetting rotary amplifying friction energy dissipation damper | |
| CN210369406U (en) | Viscoelastic friction composite damper | |
| CN208830809U (en) | Lamination frcition damper with pressure changeable device | |
| CN110485787B (en) | Speed type friction damper | |
| CN109578487B (en) | Variable-rigidity friction damping connector | |
| CN114482666B (en) | Friction damper with self-resetting function and energy consumption method thereof | |
| CN214007877U (en) | Magneto-rheological buffer with series-parallel structure | |
| CN203238810U (en) | Multidirectional friction tensile-resistant damper | |
| CN106400976A (en) | Anti-overturning disk spring three-dimensional shock-isolation support | |
| CN108071728A (en) | A kind of two-tube spring damper | |
| CN113026977A (en) | Multi-joint rotary friction damping device | |
| CN102000987A (en) | Hydraulic clamping device for numerical control rotary table |
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 |