CN103161235B - Flexural type inhaul cable particle damper - Google Patents
Flexural type inhaul cable particle damper Download PDFInfo
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- CN103161235B CN103161235B CN201310072671.4A CN201310072671A CN103161235B CN 103161235 B CN103161235 B CN 103161235B CN 201310072671 A CN201310072671 A CN 201310072671A CN 103161235 B CN103161235 B CN 103161235B
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- container
- granule
- inhaul cable
- connecting rod
- damper
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Abstract
The invention discloses a flexural type inhaul cable particle damper which comprises a damper lower portion support frame, a flexible type particle container, filler particles and a connection system. The upper steel plate of the damper lower portion support frame is in screw joint with one end of the flexible type particle container, the other end of the flexible type particle container is connected with the connection rod of the connection system, and the connection rod is connected with a rope sling through a bolt. The flexural type inhaul cable particle damper has the advantages that the flexibility of the container is used, the vibration action of the inhaul cable are transmitted to the particle container through the transmitting-down function of the connection rod, the bending vibration of the container is aroused, the particles are further driven to move, energy is consumed by the mutual collision and friction among the particles and the particles and the container, a using environment is not influenced by the changing of temperature, manufacturing cost is low, and suitable bandwidth is wide.
Description
Technical field
The invention belongs to vibration control of civil engineering structure field, be specifically related to a kind of flexure type inhaul cable particle damper.
Background technology
In recent years, in the building of over strait, river-spanning bridge, large span stayed-cable bridge is used widely.The increase of bridge span will cause the reduction of Stiffness Variation of Superstructure, will be more prone to vibrate, and then cause the vibration of suspension cable under the load action such as vehicle, wind.Meanwhile, be the requirements such as satisfied navigation, flood discharge, cable stayed bridge is generally built all higher, and eminence wind speed is large, and the direct problem brought like this is exactly the vibration aggravation of suspension cable.If do not controlled the vibration of drag-line under the effect of above two kinds of factors, serious consequence will be caused, gently then reduce the drag-line life-span, heavy then affect the safety of bridge.
For the vibration problem of suspension cable, have different control methods at present, conventional control mode is composed of external damping device vibration damping.Common dashpot type has hydraulic damper, frictional property damper, magnetic to subtract damper, MR damper and high-damping rubber shock absorber etc.Hydraulic damper in these conventional dampers, at most, technology is also the most ripe, but this damper cost is high, and the seal request of resisting medium is high, easy leakage of oil in namely viscous damper application, and maintaining is costly, responsive to variations in temperature.For addressing these problems, need to develop a kind of new damper.
Particle damping is used widely at Aero-Space, mechanical field, involved by field of civil engineering has also had.Particle damping mainly by between particle and the mutual collision of particle and container, rubbing is converted into other forms of energy by vibrational energy, thus reaches the effect of vibration damping, while granule damper in particle also have mass tuning effect.Granule damper, simple structure, definite principle; Applicable band is wide, between 0-6000HZ, all have certain effect; Cost is low; Insensitive to variations in temperature, therefore develop one and can provide vibration-damping function, the granule damper that can overcome again existing damper shortcoming is highly significant.
Summary of the invention
Technical problem to be solved by this invention to provide a kind of flexure type inhaul cable particle damper, and it can play effective control to the vibration of drag-line, and simultaneously again not by influence of temperature change, cost is low, applicable band is wide.
For solving above technical problem, the invention provides a kind of flexure type inhaul cable particle damper, comprise damper lower support frame, bending type container for granule, filler particles and connected system, the upper steel plate of described damper lower support frame and one end bolt of bending type container for granule, another link of bending type container for granule is connected with the connecting rod of connected system, and connecting rod is connected with noose by bolt.
Described damper lower support frame, upper and lower two block plates are formed by one section of steel-pipe welding, and steel plate arranges screw, and lower steel plate is fixed on bridge floor, and upper steel plate is inclined, for fixing bending type container for granule.
Described bending type container for granule is the closed container of the many bins of layering, places filler particles in bin.Every one deck can arrange multiple bin.The division of container for granule bin can arrange two kinds, and one longitudinally divides along container, and one laterally divides along container.Which kind of dividing mode of concrete employing, can select by applicability.Bending type container for granule also comprises the container cover of encapsulation, and after particles filled end, container cover is contained on container by available bolt, forms a closed container.
Another link of described bending type container for granule, be two noses with screw stretched out, two noses are separated by a distance.
The connecting rod of described connected system is the closed connecting rod with bin, places filler particles in bin; The noose of connecting rod one end is bolted on suspension cable, and the connecting rod other end inserts in the middle of bending type container for granule two noses, connects with bolt.Under the prerequisite ensureing connecting rod rigidity, get the bin of suitable size, be used for filler particles, treat particles filled complete, encapsulation steel plate is connected to the open side of connecting rod with bolt and forms an airtight connecting rod.
Described filler particles, the steel ball larger for severe or tungsten carbide pearl or lead sweat or coarse sand.
Superior effect of the present invention:
1) flexible of container is utilized, inhaul cable vibration effect is descended by connecting rod and acts on container for granule, causes bend of vessel to vibrate, and then drives movement of particles, rely on intergranular and mutual collision between particle and container, friction consumed energy, filler particles also plays mass tuning effect;
2) simultaneously filler particles in connecting rod, has not only saved steel but also can increase damping;
3) damper of the present invention is granule damper, has bandwidth, to the insensitive feature of variations in temperature, the material used is all insensitive to variations in temperature, and therefore environment for use is not acted upon by temperature changes;
4) material used in the present invention is common steel, easily obtains, and do not need special materials processing, manufacturing process is simple;
5) operating principle of the present invention is simple, and how with bolts the connection between component is, and Component composition is convenient, is convenient to install;
6) instant invention overcomes the shortcomings such as Inclined Cable Vibration controls conventional hydraulic damper leakage of oil, large by influence of temperature change, manufacture process requirement is high.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the structural representation of damper lower support frame of the present invention;
Fig. 3 is the structural representation of bending type container for granule vertical partition of the present invention;
Fig. 4 is the structural representation of bending type container for granule horizontal partition of the present invention;
Fig. 5 is the schematic diagram of particle of the present invention;
Fig. 6 is the structural representation of connecting rod of the present invention;
Number in the figure explanation
1-damper lower support frame;
11-upper steel plate; 12-steel pipe;
13-lower steel plate;
2-bending type container for granule;
21-bin; 22-nose;
3-particle;
4-connected system;
41-connecting rod; 42-bin.
Specific embodiment
Refer to shown in accompanying drawing, the invention will be further described.
As shown in Figure 1, the invention provides a kind of flexure type inhaul cable particle damper, comprise damper lower support frame 1, bending type container for granule 2, filler particles 3 and connected system 4.
As shown in Figure 2, damper lower support 1 is welded by upper steel plate 11, lower steel plate 13 and one section of steel pipe 12, and steel plate arranges screw, and lower steel plate 13 is fixed on bridge floor with expansion bolt, upper steel plate 11 arranges certain inclination angle for fixing bending type container for granule 2, connects with bolt.Upper and lower steel plate welds with steel pipe 12, first by one section of diameter slightly larger than steel pipe steel ring welding with steel plate on, and four pieces of triangle bloom supporting steel circles are welded around steel ring, then steel pipe 12 is inserted in steel ring and both are welded together, form the lower support frame 1 of damper.
Bending type container for granule 2 is containers of a many bin of flexible layering, and the inhaul cable vibration utilizing the connected system 4 of bending type container for granule 2 to transmit also causes the motion of particle, consumed energy.Layering, Fen Cang are in order to avoid particle aggregation causes particle to extrude, bending type container for granule 2 need keep a side opening in order to filler particles 3, bending type container for granule 2 can be formed by casting technique one-step casting or is welded and arranges screw at the edge of its open side, in order to connecting container lid closed container.Arrange link before bending type container for granule 2, link is made up of the nose 22 with screw that two are stretched out, and separated by a distance being used for of two noses 22 inserts connecting rod 41.The division of bin 21 can take different modes as shown in Figure 3, Figure 4.According to the starting of oscillation amplitude of particle, the particle of different-grain diameter can be adopted, the employing large-size particles that general amplitude is large, the employing small size particle that amplitude is little for the container shown in Fig. 4.Particles filled complete after, container cover is arranged on container by available bolt, thus formed closed container.
As shown in Figure 5, filler particles 3 can adopt the particle such as steel ball, tungsten carbide pearl, coarse sand that severe is larger, and the effect of filler particles, mainly by friction, collision consumed energy, adopts suitable filling rate time particles filled.
As shown in Figure 6, connected system 4 comprise a band bin 42 can filler particles, connecting rod 41 that side is open, for the steel plate of the noose and the bolt connected for pin and encapsulation connecting rod that connect drag-line.Under the prerequisite of rigidity ensureing connecting rod, get the bin 42 of suitable size, treat particles filled complete, encapsulation steel plate is connected to the open side of connecting rod with bolt and forms an airtight connecting rod 41.Noose is bolted on drag-line, bending type container for granule 2 and drag-line is linked together with connecting rod 41.
Vibration is produced when suspension cable is subject to external influence; vibrate and will be caused the bending of bending type container for granule 2 by connecting rod 41; now flexible container for granule 2 is similar to the semi girder of free end by lateral force; flexural vibrations are produced under the effect of vibration of the suspension cable that it can transmit at connected system 4; cause the motion of its internal particle; the mutual motion of particle will produce between particle and the collision of particle and chamber wall, friction; thus consuming the effect that vibrational energy reaches vibration damping, particle also has the effect of mass tuning simultaneously.Connecting rod 41 also will cause the vibration of its internal particle in the process of transmitting vibrations, has identical effect with the particle in bending type container for granule 2.
Claims (6)
1. a flexure type inhaul cable particle damper, comprise damper lower support frame, bending type container for granule, filler particles and connected system, it is characterized in that: the upper steel plate of described damper lower support frame and one end bolt of bending type container for granule, another link of bending type container for granule is connected with the connecting rod of connected system, and connecting rod is connected with noose by bolt.
2. flexure type inhaul cable particle damper according to claim 1, is characterized in that: described damper lower support frame, and upper and lower two block plates are formed by one section of steel-pipe welding, and lower steel plate is fixed on bridge floor, and upper steel plate is inclined.
3. flexure type inhaul cable particle damper according to claim 1, is characterized in that: described bending type container for granule is the closed container of the many bins of layering, places filler particles in bin.
4. flexure type inhaul cable particle damper according to claim 1, is characterized in that: another link of described bending type container for granule, and be two noses with screw stretched out, two noses are separated by a distance.
5. flexure type inhaul cable particle damper according to claim 1, is characterized in that: the connecting rod of described connected system, is the closed connecting rod with bin, places filler particles in bin; The noose of connecting rod one end is bolted on suspension cable, and the connecting rod other end inserts in the middle of bending type container for granule two noses, connects with bolt.
6. the flexure type inhaul cable particle damper according to claim 3 or 5, is characterized in that: described filler particles, the steel ball larger for severe or tungsten carbide pearl or lead sweat or coarse sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072671.4A CN103161235B (en) | 2013-03-07 | 2013-03-07 | Flexural type inhaul cable particle damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072671.4A CN103161235B (en) | 2013-03-07 | 2013-03-07 | Flexural type inhaul cable particle damper |
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| Publication Number | Publication Date |
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| CN103161235A CN103161235A (en) | 2013-06-19 |
| CN103161235B true CN103161235B (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310072671.4A Active CN103161235B (en) | 2013-03-07 | 2013-03-07 | Flexural type inhaul cable particle damper |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105002997B (en) * | 2015-07-10 | 2017-05-31 | 西安建筑科技大学 | A kind of open type damper arrangement mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070693A (en) * | 2006-05-08 | 2007-11-14 | 丁美林 | Built-in air energy-eliminating shock-absorbing damper |
| CN202007852U (en) * | 2011-03-01 | 2011-10-12 | 邱锦忠 | Basic unit of particle damper and related particle particles |
| CN102561184A (en) * | 2011-12-30 | 2012-07-11 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Vertical shock absorption device with external stayed cable |
| CN202418383U (en) * | 2011-12-14 | 2012-09-05 | 上海理工大学 | Cylindrical particle collision damper |
| CN202559558U (en) * | 2012-05-09 | 2012-11-28 | 北京江河幕墙股份有限公司 | Single cable net curtain wall damp device |
| CN203160112U (en) * | 2013-03-07 | 2013-08-28 | 同济大学 | Bent particle damper for stay rope |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2832479B1 (en) * | 2001-11-19 | 2006-05-26 | Maurer Friedrich Soehne | DAMPING DEVICE FOR CABLE |
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2013
- 2013-03-07 CN CN201310072671.4A patent/CN103161235B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070693A (en) * | 2006-05-08 | 2007-11-14 | 丁美林 | Built-in air energy-eliminating shock-absorbing damper |
| CN202007852U (en) * | 2011-03-01 | 2011-10-12 | 邱锦忠 | Basic unit of particle damper and related particle particles |
| CN202418383U (en) * | 2011-12-14 | 2012-09-05 | 上海理工大学 | Cylindrical particle collision damper |
| CN102561184A (en) * | 2011-12-30 | 2012-07-11 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Vertical shock absorption device with external stayed cable |
| CN202559558U (en) * | 2012-05-09 | 2012-11-28 | 北京江河幕墙股份有限公司 | Single cable net curtain wall damp device |
| CN203160112U (en) * | 2013-03-07 | 2013-08-28 | 同济大学 | Bent particle damper for stay rope |
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| CN103161235A (en) | 2013-06-19 |
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