CN116674437B - Anti-galloping damper for overhead contact line additional wire - Google Patents
Anti-galloping damper for overhead contact line additional wire Download PDFInfo
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- CN116674437B CN116674437B CN202310970336.XA CN202310970336A CN116674437B CN 116674437 B CN116674437 B CN 116674437B CN 202310970336 A CN202310970336 A CN 202310970336A CN 116674437 B CN116674437 B CN 116674437B
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- additional wire
- damper
- additional
- cutting
- wire
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- 238000013016 damping Methods 0.000 claims abstract description 56
- 230000009467 reduction Effects 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 abstract description 17
- 230000033001 locomotion Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000010355 oscillation Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/02—Details
- B60M1/04—Mechanical protection of line; Protection against contact by living beings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/13—Trolley wires
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The utility model provides an additional wire anti-galloping damper of a contact net, which belongs to the technical field of the galloping prevention of the additional wire of the contact net of the track traffic, and comprises a container, damping liquid, a pendulum bar, a wire clamp and a cutting, wherein the damping liquid is filled in the container, the pendulum bar is vertically arranged, the upper end of the pendulum bar is fixedly connected with the wire clamp, the cutting coplanar with the additional wire is symmetrically fixed on two sides of the lower part of the pendulum bar, the cutting is perpendicular to the pendulum bar, and the lower part of the pendulum bar and the cutting are positioned in the damping liquid. The utility model uses the fluid-solid coupling movement of the cutting in the damping liquid to consume energy, and uses the damper to improve the additional damping of the additional wire, thereby improving the oscillation starting vibration critical, realizing broadband vibration reduction and inhibiting the oscillation of the additional wire of the overhead line in any direction.
Description
Technical Field
The utility model belongs to the technical field of anti-galloping of an additional wire of a track traffic contact net, and particularly relates to an anti-galloping damper of the additional wire of the contact net.
Background
The overhead contact system is a transmission line which is erected along a railway line and supplies power to an electric locomotive, and plays an important role in directly transmitting electric energy obtained from traction power transformation to the electric locomotive. Therefore, the quality and working state of the contact net directly influence the transportation capacity of the electrified railway. In the whole railway system, the overhead contact system is a weaker link, especially an additional wire. When the flexible additional wire is affected by external force, vibration displacement easily occurs. Under the action of storm snow, rime and strong wind, severe vibration displacement can occur, the amplitude of the additional wire is overlarge under the resonance condition, arc discharge and ablation of the additional wire often occur, and further, the power supply system is caused to trip in a short circuit, so that the damage of contact net parts and train stopping accidents are caused, and huge economic loss is caused.
In the prior published materials at home and abroad, the Chinese patent application publication No. CN111469716A discloses an additional wire anti-galloping device of an electrified railway contact net, and attempts to adopt a triangular stable structure for connecting wires of a line insulator, a first cable, a second cable insulator and a second cable to prevent the additional wire from galloping violently and ensure the safe operation of a traction power supply system, but the triangular stable structure divides one line span into two half spans, and the two half spans still possibly cause galloping along with the change of wind speed, so that the installation cost is high and the attractiveness is influenced.
The Chinese patent application publication No. CN110380374A discloses a multi-stage composite energy-consumption anti-galloping spacer, which tries to adopt a multi-stage energy-consumption anti-galloping concept, when the spacer vibrates in any direction in a plane, if the vibration amplitude is smaller, damping liquid in a roller performs primary energy consumption through a damping net, but the energy consumption mode is that the damping liquid shakes in a closed roller due to vibration of an additional wire, and vibration is damped and consumed through the damping net in a reciprocating manner. Under the working condition of a plurality of power transmission wires, the vibration reduction and energy consumption effects are limited for a single power transmission wire, and the self weight of the vibration reduction and energy consumption device is born by the power transmission wires.
The Chinese patent publication No. CN2439742Y discloses a damper, which tries to adopt a device for damping mechanical oscillation of a line on an overhead transmission line, wherein the device is composed of a hammer body, a steel twisted connecting line and a wire clamp, the mechanical model is essentially a tuned mass damper (TMD, tuned Mass Damper), but because the line shape of an additional wire of a contact net is greatly influenced by temperature, the structural vibration characteristic is always changed, the TMD only has good control effect on the structural vibration in a range between cells near a single frequency, once the structural vibration characteristic is changed due to temperature change, and the conventional TMD vibration damping function designed by specific parameters is also disabled.
Therefore, in order to solve the above problems, there is a need for an additional wire anti-galloping damper for a contact network, which has a wide frequency control range, galloping multidirectional control, simple structure, and suitable cost, and provides a new solution to the galloping problem of the additional wire for the contact network.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the utility model provides an additional wire anti-galloping damper for a contact net, which adopts the damping principle that the fluid-solid coupling motion of an insert in damping liquid is utilized to consume energy, and the additional damping of the additional wire is improved by utilizing the damper, so that the galloping starting vibration critical is improved, the broadband damping is realized, and the galloping of the additional wire of the contact net in any direction is inhibited.
The technical scheme adopted by the utility model is as follows: the utility model provides an additional wire of contact net prevents waving attenuator, includes container, damping fluid, pendulum strip, fastener and cutting, is equipped with damping fluid in the container, pendulum strip vertical setting, pendulum strip's upper end and fastener fixed connection, pendulum strip's lower part both sides symmetry be fixed with the coplanar cutting of additional wire, the cutting perpendicular to pendulum strip, pendulum strip's lower part and cutting are located damping fluid;
the damper being in a position straddling the additional conductor3% -5% of (a) a%>For the distance of the fixation point of the damper to the additional wire to the nearest strut center line>Is a length across the additional conductor.
Furthermore, the cutting is a smooth round rod, and the cutting is waved in a horizontal plane and a vertical plane, has isotropy, is more uniform in stress and has better vibration damping performance.
Further, the number of the cutting strips is a plurality of the cutting strips, and the cutting strips are arranged in layers. The contact area of the cutting strips in the layered arrangement in the damping liquid is increased, the damping force is effectively increased, and the additional damping of the additional wire waving is improved.
Further, the wire clamp comprises an upper half ring buckle and a lower half ring buckle, the upper half ring buckle and the lower half ring buckle are fixedly connected through bolts, and the upper half ring buckle and the lower half ring buckle are used for fastening the additional wire to ensure that the additional wire does not slide along the axial direction.
Further, the container is a cuboid box body without a cover, the long side of the cuboid box body is parallel to the axial direction of the additional lead, the short side of the cuboid box body is perpendicular to the axial direction of the additional lead, and the cuboid box body is centered and symmetrical by taking the axial direction of the additional lead as a reference.
Further, the blocking cover is a box body without a cover and is fixed on the swinging strip, and the blocking cover is reversely buckled above the container and is not contacted with the container.
Further, the container is secured to the post by a bracket.
Working principle: the characteristic of the additional wire galloping of the contact net is mainly concentrated on the galloping in a transverse and vertical plane. Therefore, the utility model adopts the interaction of the pendulum bar, the insert bar and the damping fluid to carry out energy consumption vibration reduction on the dancing of the additional wire of the contact net. When the additional wire of the overhead contact system is in galloping, the vibration response of the additional wire is transmitted to the swinging strip through the wire clamp wrapped on the surface of the additional wire by the fastening ring, the vibration response of the additional wire can be amplified and transmitted to the cutting by utilizing the swinging length of the swinging strip, and the vibration of the additional wire of the overhead contact system is damped by the energy consumption and vibration damping of the reciprocating motion of the cutting in the damping fluid, so that the aim of anti-galloping and vibration damping of the additional wire of the overhead contact system is achieved. The vibration response is subjected to energy consumption vibration reduction by utilizing the fluid-solid coupling motion, and the vibration response is not influenced by the change of the vibration frequency of the additional wire caused by temperature, so that the purpose of anti-galloping vibration reduction of the additional wire of the overhead contact system is achieved; meanwhile, when the additional wire is in galloping, the vibration of the cutting can be decomposed into transverse and vertical vibration, and the galloping of the additional wire can be effectively controlled in the transverse and vertical directions.
The utility model has wide frequency control range and is realized by the interaction of the cutting and the damping fluid. The damping force generated by the movement of the cutting in the damping liquid is irrelevant to the frequency change, and is related to the viscosity of the damping liquid, the movement speed of the cutting, the number of the cutting, the contact area in the damping liquid and other factors, the transverse component of the waving displacement of the additional lead can be transmitted to the displacement of the cutting through the simple pendulum to be n times (n>1) Amplifying and damping force provided by the damper is n 2 Amplifying the signal to achieve the purpose of broadband vibration reduction.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model adopts the cutting-damping fluid system, has the advantages of wide frequency control range and multidirectional control of the vibration by friction between the surface of the cutting and the damping fluid, utilizes the fluid-solid coupling motion to consume energy and damp the vibration response, is not influenced by the change of the vibration frequency of the additional lead caused by temperature, and can effectively control the vibration of the additional lead in the transverse direction and the vertical direction.
2. The utility model has the advantages of simple structure and proper cost. The utility model is arranged at the proper installation position of the additional wires, so that the waving of the multi-span additional wires can be effectively and simultaneously controlled, the utility model is not required to be installed on each span of the additional wires, a certain number of spans can be used for installation, the installation quantity of the dampers is reduced, and the waving control cost of the additional wires is reduced. The utility model does not need anchor systems such as anchor cables and the like for fixation, has convenient installation and small and exquisite structure and is beautiful.
3. The utility model improves the additional damping of the additional wire, thereby improving the design characteristics of the oscillation starting critical, and providing a novel damping vibration reduction application scene which realizes broadband vibration reduction, has simple structure and inhibits the oscillation of the additional wire of the overhead contact system in any direction.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of another angle of an embodiment of the present utility model;
fig. 4 is an installation schematic of an embodiment of the present utility model.
In the figure: 1-container, 2-damping liquid, 3-pendulum bar, 4-wire clamp, 5-insert, 6-baffle cover, 7-bracket, 8-additional wire and 9-pillar.
Detailed Description
The present utility model will be described in detail below with reference to the drawings and the specific embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model.
The embodiment of the utility model provides an anti-galloping damper for an additional wire of a contact network, which comprises a container 1, damping fluid 2, a swinging strip 3, a wire clamp 4, an inserting strip 5, a blocking cover 6 and a bracket 7 as shown in fig. 1-4.
The container 1 is a cuboid steel box body without a cover, the long side of the container 1 is parallel to the axial direction of the additional wire 8, the short side of the container 1 is perpendicular to the axial direction of the additional wire 8, and the container is centered and symmetrical by taking the axial direction of the additional wire 8 as a reference. The bottom surface of the container 1 is fixed to a bracket 7. The bracket 7 is a combined member which is formed by welding square steel pipes and has high stability. The bracket 7 is fixedly connected with a support column 9 of the contact net and serves as a support for the container 1. The container 1 is filled with damping fluid 2. The damping liquid 2 is a damping liquid with certain viscosity and stable uniformity, such as viscous materials and silicone oil.
The swinging strip 3 is a steel smooth round rod and is vertically arranged. The lower part of the swinging strip 3 is inserted into the damping liquid 2, and the upper end of the swinging strip 3 is fixedly connected with the wire clamp 4. The wire clamp 4 comprises an upper half ring buckle and a lower half ring buckle, the upper half ring buckle and the lower half ring buckle are fixedly connected through bolts, and the upper half ring buckle and the lower half ring buckle are used for fastening the ring to wrap the additional wire 8, so that the additional wire 8 is ensured not to slide along the axial direction.
The cutting 5 is a steel smooth round rod. The cutting strips 5 are symmetrically fixed on two sides of the lower part of the swinging strip 3 and are arranged in layers, and the cutting strips are similar to a fish bone shape. In this embodiment, the number of the cutting 5 is six, and the cutting is divided into three layers, two layers, and symmetrically welded on two sides of the lower part of the swinging strip 3. The axial direction of the cutting 5 is parallel to the long side of the container 1 and is kept horizontal and perpendicular to the pendulum bar 3. The cutting 5 is coplanar with the additional wire 8 and is completely immersed inside the damping fluid 2.
The baffle cover 6 is a flat cuboid steel box body without a cover, and is inversely buckled above the container 1, and the size of the baffle cover completely covers the top of the container 1. The pendulum bar 3 passes through the geometric center of the flap 6. The baffle cover 6 is vertically welded and fixed with the swinging strip 3, so that the periphery of the baffle cover 6 is ensured to be parallel to the periphery of the container 1 in space. The baffle cover 6 is not contacted with the container 1, the top surface and the peripheral side surfaces of the baffle cover 6 are kept at a certain distance from the peripheral side surfaces of the container 1 and are symmetrically distributed, and the baffle cover 6 is prevented from being driven to collide with the container 1 when the swinging strip 3 moves. The blocking cover 6 is used for preventing sundries such as dust, rainwater and the like from entering the damping fluid 2, and influences the service life of the damper.
In the present utility model, first, the bracket 7 is installed at a predetermined height of the column 9, the container 1 is installed at the designed position of the bracket 7, and then a predetermined volume of the damping liquid 2 is filled into the container 1. The wire clamp 4 is then installed at the intended installation location of the additional wire 8 and the pendulum bar 3, the flap 6 and the cutting 5 are welded in the respective dimensions. Finally, the cutting 5 and part of the pendulum strip 3 are immersed into the damping liquid 2, and the installation is completed.
The embodiment adopts the vibration reduction principle of the external damper, and the optimal damping coefficient of the external damperThe following are provided:
wherein:the mass of the additional wire; />The vibration frequency of the additional wire; />Is a length across the additional wire; />Is the distance from the damper's attachment point to the nearest strut centerline.
Taking the positive feeder as an example, the fundamental frequency of vibration of the positive feeder with 50m spans is generally about f=0.7 Hz, and the mass of one span of clues is about m=35 kg. According to the above, the optimal damping coefficient of the damper can be calculated when the damper is at different installation positionsThe range is as follows:
when the mounting position x/l is 3%, the optimal damping coefficient of the damperThe method comprises the following steps:
when the mounting position ratio x/l is 5%, the optimal damping coefficient of the damperThe method comprises the following steps:
therefore, for additional wires with different materials and different spans, the optimal damping coefficient range provided by the damper can be ensured to be 1000-50000N.s/m.
The present utility model has been described in detail by way of examples, but the description is merely exemplary of the utility model and should not be construed as limiting the scope of the utility model. The scope of the utility model is defined by the claims. In the technical scheme of the utility model, or under the inspired by the technical scheme of the utility model, similar technical schemes are designed to achieve the technical effects, or equivalent changes and improvements to the application scope are still included in the protection scope of the patent coverage of the utility model.
Claims (7)
1. An additional wire anti-galloping damper of contact net, its characterized in that: the damping device comprises a container, damping fluid, a pendulum bar, a wire clamp and a cutting, wherein the damping fluid is filled in the container, the pendulum bar is vertically arranged, the upper end of the pendulum bar is fixedly connected with the wire clamp, the cutting coplanar with an additional wire is symmetrically fixed on two sides of the lower part of the pendulum bar, the cutting is perpendicular to the pendulum bar, and the lower part of the pendulum bar and the cutting are positioned in the damping fluid;
the damper is positioned at a position x/l crossing the additional wire, wherein x is the distance from the fixed point of the damper and the additional wire to the center line of the nearest strut, and l is the length crossing the additional wire;
adopts the vibration reduction principle of the external damper, and the optimal damping coefficient c of the external damper opt The following are provided:
wherein: m is the mass of the additional wire; omega is the vibration frequency of the additional wire; l is the length of a span of additional wires; x is the distance from the damper's attachment point to the additional wire to the nearest strut centerline.
2. The overhead line system additional wire anti-galloping damper of claim 1, wherein: the cutting is a smooth round rod.
3. An additional wire anti-galloping damper for overhead lines according to claim 1 or 2, wherein: the number of the cutting strips is multiple, and the cutting strips are arranged in layers.
4. The overhead line system additional wire anti-galloping damper of claim 1, wherein: the wire clamp comprises an upper half ring buckle and a lower half ring buckle, wherein the upper half ring buckle and the lower half ring buckle are fixedly connected through bolts, and the upper half ring buckle and the lower half ring buckle are used for fastening a ring to wrap the additional wire.
5. The overhead line system additional wire anti-galloping damper of claim 1, wherein: the container is a cuboid box body without a cover, the long side of the cuboid box body is parallel to the axial direction of the additional lead, the short side of the cuboid box body is perpendicular to the axial direction of the additional lead, and the cuboid box body is centered and symmetrical by taking the axial direction of the additional lead as a reference.
6. An additional wire anti-galloping damper for overhead lines according to claim 1 or 5, wherein: the retaining cover is a non-cover box body and is fixed on the swinging strip, and the retaining cover is reversely buckled above the container and is not contacted with the container.
7. The overhead line system additional wire anti-galloping damper of claim 1, wherein: the container is secured to the post by a bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310970336.XA CN116674437B (en) | 2023-08-03 | 2023-08-03 | Anti-galloping damper for overhead contact line additional wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310970336.XA CN116674437B (en) | 2023-08-03 | 2023-08-03 | Anti-galloping damper for overhead contact line additional wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116674437A CN116674437A (en) | 2023-09-01 |
| CN116674437B true CN116674437B (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310970336.XA Active CN116674437B (en) | 2023-08-03 | 2023-08-03 | Anti-galloping damper for overhead contact line additional wire |
Country Status (1)
| Country | Link |
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| CN (1) | CN116674437B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1458388A (en) * | 1973-12-17 | 1976-12-15 | Dn Otdel Komplexnogo Proekt Uk | Apparatus for suppressing galloping conductors |
| DE19517806A1 (en) * | 1995-05-15 | 1996-11-21 | Armin Mylaeus | Overhead conductor for electric trains with lower vibration amplitude and contact forces |
| CN101692567A (en) * | 2009-09-24 | 2010-04-07 | 中国电力科学研究院 | Pendulum-type damping anti-galloping device |
| CN202145556U (en) * | 2011-02-09 | 2012-02-15 | 云南电网公司 | Apparatus for preventing power transmission lines from swinging |
| CN204458973U (en) * | 2015-02-09 | 2015-07-08 | 宁波大学 | A kind of simple liquid damping TMD |
| CN107657126A (en) * | 2017-09-30 | 2018-02-02 | 大连理工大学 | A kind of circular cylinder Tuned Liquid and design method for controlling the vibration of long span bridge beam length suspension rod |
| CN110295685A (en) * | 2019-03-29 | 2019-10-01 | 北京建筑大学 | The compound tuned damper of novel half active |
| JP2019214926A (en) * | 2018-06-12 | 2019-12-19 | 广州大学 | Single pendulum - viscous liquid combination damper |
| CN112886515A (en) * | 2021-01-25 | 2021-06-01 | 浙江大学 | Transmission line anti-galloping device and anti-galloping effect detection system |
| CN112886514A (en) * | 2021-01-25 | 2021-06-01 | 浙江大学 | Large-stroke galloping-inhibiting damper for transmission conductor |
| CN113696796A (en) * | 2021-08-27 | 2021-11-26 | 中车青岛四方机车车辆股份有限公司 | Contact net anti-galloping device and rail vehicle |
-
2023
- 2023-08-03 CN CN202310970336.XA patent/CN116674437B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1458388A (en) * | 1973-12-17 | 1976-12-15 | Dn Otdel Komplexnogo Proekt Uk | Apparatus for suppressing galloping conductors |
| DE19517806A1 (en) * | 1995-05-15 | 1996-11-21 | Armin Mylaeus | Overhead conductor for electric trains with lower vibration amplitude and contact forces |
| CN101692567A (en) * | 2009-09-24 | 2010-04-07 | 中国电力科学研究院 | Pendulum-type damping anti-galloping device |
| CN202145556U (en) * | 2011-02-09 | 2012-02-15 | 云南电网公司 | Apparatus for preventing power transmission lines from swinging |
| CN204458973U (en) * | 2015-02-09 | 2015-07-08 | 宁波大学 | A kind of simple liquid damping TMD |
| CN107657126A (en) * | 2017-09-30 | 2018-02-02 | 大连理工大学 | A kind of circular cylinder Tuned Liquid and design method for controlling the vibration of long span bridge beam length suspension rod |
| JP2019214926A (en) * | 2018-06-12 | 2019-12-19 | 广州大学 | Single pendulum - viscous liquid combination damper |
| CN110295685A (en) * | 2019-03-29 | 2019-10-01 | 北京建筑大学 | The compound tuned damper of novel half active |
| CN112886515A (en) * | 2021-01-25 | 2021-06-01 | 浙江大学 | Transmission line anti-galloping device and anti-galloping effect detection system |
| CN112886514A (en) * | 2021-01-25 | 2021-06-01 | 浙江大学 | Large-stroke galloping-inhibiting damper for transmission conductor |
| CN113696796A (en) * | 2021-08-27 | 2021-11-26 | 中车青岛四方机车车辆股份有限公司 | Contact net anti-galloping device and rail vehicle |
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| Publication number | Publication date |
|---|---|
| CN116674437A (en) | 2023-09-01 |
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