CN111963607B - Rotary friction damper - Google Patents
Rotary friction damper Download PDFInfo
- Publication number
- CN111963607B CN111963607B CN202010927028.5A CN202010927028A CN111963607B CN 111963607 B CN111963607 B CN 111963607B CN 202010927028 A CN202010927028 A CN 202010927028A CN 111963607 B CN111963607 B CN 111963607B
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- sleeve
- friction
- pivot screw
- screw rod
- rotating
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- 238000013016 damping Methods 0.000 claims abstract description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000009021 linear effect Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000013519 translation Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/02—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together
- F16F7/04—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together in the direction of the axis of rotation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a rotary friction damper, which relates to the technical field of bridge dampers, and mainly provides a pivot screw rod and a damping component, wherein linear displacement needing to be slowed down is converted into rotation action and linear action of a rotating sleeve, and meanwhile, friction energy consumption is carried out on the rotating sleeve in the rotation process of the rotating sleeve, so that damping is realized, and vibration amplitude is reduced.
Description
Technical Field
The invention relates to the technical field of dampers, in particular to a rotary friction damper.
Background
The vibration reduction and insulation device is applied to the bridge structure, so that the safety of the bridge when encountering an earthquake can be obviously improved, and the structural damage is lightened.
The common bridge shock absorbing and isolating device mainly comprises a friction pendulum support, a viscous damper, a soft steel yielding energy consumption support, a shock isolating rubber support and the like, wherein: the friction pendulum support adopts a pendulum principle, and the effect of prolonging the self-vibration period of a bridge system and friction energy consumption is realized by utilizing the mutual swing of friction surfaces, but the damping ratio of the friction pendulum support can be drastically reduced along with the increase of displacement, and the friction pendulum support is not suitable for bridge design with large earthquake intensity; the viscous damper converts kinetic energy into internal energy through relative movement of viscous fluid in the cylinder body so as to realize energy consumption, but the viscous damper can only realize unidirectional shock absorption and has high requirement on sealing of the cylinder body; the soft steel yielding energy consumption support realizes damping energy consumption after yielding through soft steel metal, but the application range is restricted by overlarge external height dimension; the vibration isolation rubber support utilizes the rubber characteristic to perform shearing energy consumption but is difficult to install and replace. Therefore, the development of the novel structural form of the shock absorption and insulation device with wide application range and good shock absorption and insulation effect has important significance.
Disclosure of Invention
The invention aims to provide a novel damper which can realize damping and energy consumption.
Embodiments of the present invention are implemented as follows:
A rotary friction damper comprising:
A pivot screw;
The damping assembly comprises a rotating sleeve and a movable sleeve which are sleeved on the pivot screw rod and can axially move along the pivot screw rod, the rotating sleeve and the pivot screw rod form a screw pair or a ball screw pair, the movable sleeve and the pivot screw rod are relatively fixed in the circumferential direction of the pivot screw rod, and the rotating sleeve and the movable sleeve are relatively fixed in the axial direction of the pivot screw rod;
wherein the translational sleeve has a friction portion that applies a friction force to the rotational sleeve that causes it to have a tendency to rotate in a second direction opposite the first direction when the rotational sleeve rotates in a first direction relative to the pivot screw.
Preferably, the friction part is arranged outside the outer side wall of the rotating sleeve and is in friction contact with the outer side wall of the rotating sleeve.
Preferably, the friction part comprises a plurality of friction ring plates coaxial with the rotating sleeve, a rotating ring groove matched with the friction ring plates is concavely formed in the outer side wall of the rotating sleeve, and the friction ring plates can be embedded in the rotating ring groove in a rotating manner relative to the rotating sleeve.
Preferably, the friction part comprises a mounting ring radially sleeved on the outer side of the friction ring plate along the pivot screw rod, a fixing groove is concavely formed in the inner periphery of the mounting ring, and an extension part which is in a complementary shape with the fixing groove and is clamped in the fixing groove is formed in the outer periphery of the friction ring plate.
Preferably, the translational sleeve is provided with two end covers which are respectively arranged outside two ends of the rotary sleeve along the axial direction of the pivot screw rod, the end covers on two sides are fixedly connected with friction parts between the two end covers, and the two end covers are matched with the friction parts to enclose a cavity for accommodating the rotary sleeve.
Preferably, the two side end covers are respectively in relatively rotatable abutting connection with the two ends of the rotating sleeve.
Preferably, the translation sleeve is provided with a fastening bolt, the threaded end of the fastening bolt axially penetrates through the mounting ring and the end covers at the two sides in parallel to the pivot screw rod, and an axial limit nut is connected with the part of the fastening bolt extending out of the end cover at one side far away from the head part of the fastening bolt in a threaded manner.
Preferably, the pivot screw rod is a bidirectional screw rod;
the number of the rotating sleeves is two, and the two rotating sleeves are respectively connected with the forward and reverse rotation threads on the pivot screw rod.
Preferably, the rotating sleeve and the pivot screw rod form a ball screw pair.
Due to the adoption of the technical scheme, the beneficial effects of the invention include:
(1) The invention mainly sets the pivot screw rod and the damping component, converts the linear displacement needing to be slowed down into the rotation action and the linear action of the rotating sleeve, and simultaneously rubs the rotating sleeve to consume energy in the rotation process of the rotating sleeve, thereby realizing damping and reducing the displacement amplitude.
(2) According to the invention, the first external thread and the second external thread with opposite screw threads are arranged on the periphery of the pivot screw rod, and two rotating sleeves which are abutted against and respectively connected with the first external thread and the second external thread in a matching way are correspondingly arranged at the same time, so that the moment applied to the translation sleeve due to friction force during rotation of the rotating sleeve is counteracted, and the influence of unbalanced structural load on transmission is prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of an embodiment 1 of the present invention;
FIG. 2 is a schematic cross-sectional view of example 1 of the present invention;
FIGS. 3 and 4 are schematic views illustrating the assembly of a snap ring, a clamp ring and a friction ring plate according to embodiment 1 of the present invention;
Fig. 5 and fig. 6 are schematic structural diagrams of embodiment 2 provided by the present invention;
[ detailed description ] the following:
10-pivot screw rod, 20-rotating sleeve, 30-translation sleeve, 31-friction ring piece, 32-snap ring, 33-compression ring, 34-end cover, 35-fastening bolt, 36-axial limit nut and 37-extension part.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like in the description of the present invention, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.
Furthermore, the terms "horizontal," "vertical," and the like in the description of the present invention, if any, do not denote absolute levels or overhangs, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1 and 2, embodiment 1 proposes a rotary friction damper, which is specifically applied to a bridge, and includes:
A pivot screw 10;
The damping assembly comprises a rotating sleeve 20 and a translation sleeve 30 which are sleeved on the pivot screw rod 10 and can move along the axial direction of the rotating sleeve, the rotating sleeve 20 and the pivot screw rod 10 form a ball screw pair, the translation sleeve 30 and the pivot screw rod 10 are relatively fixed in the circumferential direction of the pivot screw rod 10, and the rotating sleeve 20 and the translation sleeve 30 are relatively fixed in the axial direction of the pivot screw rod 10;
Wherein the translation housing 30 has a friction portion that applies a friction force to the rotation housing 20 such that it has a tendency to rotate in a second direction opposite to the first direction when the rotation housing 20 rotates in the first direction with respect to the hinge pin 10.
In a specific application, the pivot screw rod 10 is fixedly connected with the abutment, the translation sleeve 30 is fixedly connected with the beam body, the axial direction of the pivot screw rod 10 is arranged along the displacement direction of the beam body, and at the moment, the translation sleeve 30 and the pivot screw rod 10 are relatively fixed in the circumferential direction of the pivot screw rod 10 and are in a static state. When the beam body is displaced, the translation sleeve 30 moves in a reciprocating manner on the pivot screw rod 10. At this time, since the translation sleeve 30 and the rotation sleeve 20 are relatively fixed in the axial direction of the pivot screw 10, and the rotation sleeve 20 is screwed with the external thread on the pivot screw 10, the movement of the translation sleeve 30 drives the rotation sleeve 20 to rotate along the first direction relative to the pivot screw 10. At this time, friction occurs between the friction portion of the translation sleeve 30 and the rotation sleeve 20, so that the rotation sleeve 20 receives friction force with a tendency of reverse rotation, and energy is consumed, thereby playing a damping effect.
The friction part in the translation sleeve 30 can be in frictional contact with the end part of the rotation sleeve 20, so that the friction energy consumption of the rotation sleeve 20 can be realized. In the preferred embodiment 1, the friction portion is provided outside the outer side wall of the rotating sleeve 20 and is in frictional contact with the outer side wall of the rotating sleeve 20.
More specifically, when the friction portion is disposed on the outer side wall of the rotating outer side wall, the friction portion may be a cylindrical friction cylinder, and is directly sleeved outside the rotating sleeve 20, and in this embodiment, the friction portion includes a plurality of friction ring plates 31 coaxial with the rotating sleeve 20, a rotating ring groove adapted to the friction ring plates 31 is concavely disposed on the outer side wall of the rotating sleeve 20, and the friction ring plates 31 are rotatably embedded in the rotating ring groove relative to the rotating sleeve 20.
Since the friction ring plate 31 is embedded in the rotary ring groove, the friction contact area between the friction part and the rotary sleeve 20 can be set larger, thereby improving the damping effect of the friction part on the rotary sleeve 20. Meanwhile, since the friction ring plate 31 is embedded in the rotating ring groove, the friction ring plate 31 also has the effect of driving the whole rotating sleeve 20 to axially move along the hinge screw 10.
In addition, referring to fig. 3 and 4, in embodiment 1, in order to facilitate the installation of the friction ring plate 31, the friction part includes a mounting ring radially sleeved on the outer side of the friction ring plate 31 along the pivot screw 10, a fixing groove is concavely formed on the inner circumference of the mounting ring, and an extension part 37 having a complementary shape to the fixing groove and being clamped in the fixing groove is formed on the outer circumference of the friction ring plate, so that the friction ring plate 31 and the mounting ring are relatively fixed in the circumferential direction and the radial direction of the pivot screw 10.
Further, in this embodiment 1, the translational sleeve 30 has two end caps 34 disposed outside the two ends of the rotational sleeve 20 along the axial direction of the hinge screw 10, the end caps 34 on both sides are fixedly connected with the friction portion therebetween, the two end caps 34 cooperate with the friction portion to enclose a cavity for accommodating the rotational sleeve 20, and the two end caps 34 are respectively rotatably abutted against the two ends of the rotational sleeve 20.
Through the structure, the whole translation sleeve 30 and the rotation sleeve 20 can be integrally arranged, and the rotation shaft 20 is always fixed with the translation sleeve 30 in the axial direction of the pivot screw 10 no matter whether the rotation sleeve 20 moves in the forward direction or the reverse direction.
More specifically, in order to reduce the processing difficulty, in this embodiment 1, the mounting ring is mainly composed of a plurality of compression rings 33 and snap rings 32 coaxially and alternately arranged in sequence along the axial direction of the pivot screw 10, and the fixing groove is formed on the inner periphery of the snap ring 32; meanwhile, the translational sleeve 30 is provided with a fastening bolt 35, the threaded end of which axially penetrates through the mounting ring and the end covers 34 at both sides in parallel to the pivot screw 10, and the part of the fastening bolt 35 extending out of the end covers 34 is in threaded connection with an axial limit nut 36 so as to connect and fix the whole translational sleeve 30 into a whole.
More importantly, in the embodiment 1, the hinge screw 10 is a bidirectional screw;
The number of the rotating sleeves 20 is two, and the two rotating sleeves 20 are respectively connected with the forward and reverse rotation threads on the pivot screw rod 10.
The purpose of this design is to: because the translational sleeve 30 and the rotary sleeve 20 generate friction moment when circumferentially moving, the two rotary sleeves 20 are adopted, the directions of the internal friction moment are opposite and offset, and the pivot screw rod 10 is prevented from generating axial unbalanced load.
Meanwhile, in this embodiment 1, two rotation sleeves 20 are sequentially arranged along the axial direction of the hinge screw 10, and opposite ends of the two rotation sleeves can be relatively and rotatably abutted together, so as to realize the function of fixing the rotation sleeve 20 and the translation sleeve 30 in the axial direction of the hinge screw 10. In addition, the operator can set the rotating sleeve 20 to form a screw pair with the pivot screw 10 according to his own requirement, so as to replace the scheme of forming a ball screw pair by the two.
Example 2
Referring to fig. 5 and 6, the embodiment 2 is substantially the same as the embodiment 1, and the main difference is that: in embodiment 2, the number of the rotating sleeves 20 is 1, and the pivot screw 10 is also a unidirectional screw, so that the torque applied by the rotating sleeve 20 to the translation sleeve 30 cannot be counteracted, but the processing is more convenient and the implementation cost is lower.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A rotary friction damper comprising:
A pivot screw;
The damping assembly comprises a rotating sleeve and a movable sleeve which are sleeved on the pivot screw rod and can axially move along the pivot screw rod, the rotating sleeve and the pivot screw rod form a screw pair or a ball screw pair, the movable sleeve and the pivot screw rod are relatively fixed in the circumferential direction of the pivot screw rod, and the rotating sleeve and the movable sleeve are relatively fixed in the axial direction of the pivot screw rod;
wherein the translational sleeve has a friction portion that applies a friction force to the rotational sleeve such that the friction force has a tendency to rotate in a second direction opposite to the first direction when the rotational sleeve rotates in the first direction relative to the pivot screw;
The friction part is arranged outside the outer side wall of the rotating sleeve and is in friction contact with the outer side wall of the rotating sleeve;
the friction part comprises a plurality of friction ring plates coaxial with the rotating sleeve, a rotating ring groove matched with the friction ring plates is concavely formed in the outer side wall of the rotating sleeve, and the friction ring plates can be embedded in the rotating ring groove in a rotating manner relative to the rotating sleeve;
The friction part comprises a mounting ring which is radially sleeved on the outer side of the friction ring plate along the pivot screw rod, a fixing groove is concavely formed on the inner circumference of the mounting ring, and an extension part which is in a complementary shape with the fixing groove and is clamped in the fixing groove is formed on the outer circumference of the friction ring plate;
The mounting ring comprises a plurality of compression rings and clamping rings which are coaxially and alternately arranged and connected in sequence along the axial direction of the pivot screw rod, and the fixing groove is formed in the inner periphery of the clamping rings.
2. The rotary friction damper according to claim 1, wherein the translational sleeve is provided with two end covers which are respectively arranged outside two ends of the rotary sleeve along the axial direction of the pivot screw rod, the end covers on two sides are fixedly connected with friction parts between the two end covers, and the two end covers are matched with the friction parts to enclose a cavity for accommodating the rotary sleeve.
3. The rotary friction damper according to claim 2, wherein the end caps are respectively rotatably abutted with both ends of the rotating sleeve.
4. The rotary friction damper according to claim 2, wherein the translational sleeve has a fastening bolt whose threaded end axially penetrates the mounting ring and the end caps on both sides parallel to the pivot screw, and an axial limit nut is screwed to a portion of the fastening bolt extending out of the end cap on a side remote from the head portion thereof.
5. The rotary friction damper according to claim 1, wherein,
The pivot screw rod is a bidirectional screw rod;
the number of the rotating sleeves is two, and the two rotating sleeves are respectively connected with the forward and reverse rotation threads on the pivot screw rod.
6. The rotary friction damper according to any one of claims 1 to 5, wherein the rotating sleeve and the pivot screw constitute a ball screw pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927028.5A CN111963607B (en) | 2020-09-07 | 2020-09-07 | Rotary friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927028.5A CN111963607B (en) | 2020-09-07 | 2020-09-07 | Rotary friction damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111963607A CN111963607A (en) | 2020-11-20 |
| CN111963607B true CN111963607B (en) | 2024-06-25 |
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| CN202010927028.5A Active CN111963607B (en) | 2020-09-07 | 2020-09-07 | Rotary friction damper |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879476B (en) * | 2021-01-04 | 2023-03-17 | 山东电力工程咨询院有限公司 | Chimney hangs passive frequency modulation damping vibration attenuation of inner tube and ends and shake device and chimney |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002021901A (en) * | 2000-07-05 | 2002-01-23 | Nifco Inc | Rotary damper and assist grip device |
| KR20150080665A (en) * | 2014-01-02 | 2015-07-10 | 태성이앤씨 주식회사 | High efficiency and Hybrid friction damper socket |
| CN107893565A (en) * | 2017-12-18 | 2018-04-10 | 安徽工程大学 | Worm drive formula friction energy-dissipating damper |
| CN109811641A (en) * | 2019-02-20 | 2019-05-28 | 广州大学 | A kind of buffer limit type spin friction mass damper |
| CN213017420U (en) * | 2020-09-07 | 2021-04-20 | 成都市新筑路桥机械股份有限公司 | Rotary friction damper |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR404400A (en) * | 1909-06-28 | |||
| US6240801B1 (en) * | 1998-03-20 | 2001-06-05 | Oiles Corporation | Friction damper and pedal device for vehicle having the friction damper |
| WO2002036983A1 (en) * | 2000-10-26 | 2002-05-10 | Piolax, Inc. | Rotary damper |
| WO2005033399A1 (en) * | 2003-10-06 | 2005-04-14 | Lg Electronics, Inc. | Damper in a washing machine and fabricating method of the same |
| JP4970234B2 (en) * | 2007-12-17 | 2012-07-04 | 中日本高速道路株式会社 | Bridge vibration control device and viaduct |
| CN103267079B (en) * | 2012-05-11 | 2016-01-06 | 青岛科而泰环境控制技术有限公司 | A kind of friction damper |
| CN103291797B (en) * | 2013-03-15 | 2016-01-20 | 尹学军 | A kind of frcition damper |
| CN103185100B (en) * | 2013-03-15 | 2016-01-06 | 尹学军 | The frcition damper that pretightening force is adjustable |
| CN205298387U (en) * | 2014-11-21 | 2016-06-08 | 重庆隆鑫发动机有限公司 | Damping device of rigidity contact is prevented to bumper shock absorber |
| JP6580457B2 (en) * | 2015-10-29 | 2019-09-25 | Thk株式会社 | Rotating inertia mass damper |
| US10450865B2 (en) * | 2016-05-27 | 2019-10-22 | Pratt & Whitney Canada Corp. | Friction damper |
| JP7003514B2 (en) * | 2017-09-14 | 2022-02-10 | 株式会社大林組 | Seismic isolation structure |
| CN107859198B (en) * | 2017-12-18 | 2023-04-21 | 安徽工程大学 | Torsional composite metal energy-dissipation damper |
| CN110042941B (en) * | 2019-03-19 | 2024-04-16 | 苏州科技大学 | Elbow-shaped elastomer vibration energy-dissipation rotary fluid damping node |
| CN210739225U (en) * | 2019-10-24 | 2020-06-12 | 华中建科（北京）工程科技有限公司 | Friction damper |
-
2020
- 2020-09-07 CN CN202010927028.5A patent/CN111963607B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002021901A (en) * | 2000-07-05 | 2002-01-23 | Nifco Inc | Rotary damper and assist grip device |
| KR20150080665A (en) * | 2014-01-02 | 2015-07-10 | 태성이앤씨 주식회사 | High efficiency and Hybrid friction damper socket |
| CN107893565A (en) * | 2017-12-18 | 2018-04-10 | 安徽工程大学 | Worm drive formula friction energy-dissipating damper |
| CN109811641A (en) * | 2019-02-20 | 2019-05-28 | 广州大学 | A kind of buffer limit type spin friction mass damper |
| CN213017420U (en) * | 2020-09-07 | 2021-04-20 | 成都市新筑路桥机械股份有限公司 | Rotary friction damper |
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| CN111963607A (en) | 2020-11-20 |
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Effective date of registration: 20230116 Address after: 611430 No. 799, hope road, Wujin street, Xinjin District, Chengdu, Sichuan (Industrial Park) Applicant after: Chengdu Xinzhu Transportation Technology Co.,Ltd. Address before: 611430 Xinjin Industrial Park, Xinjin County, Chengdu City, Sichuan Province Applicant before: CHENGDU XINZHU ROAD & BRIDGE MACHINERY Co.,Ltd. |
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