CN103161235A - Flexural type inhaul cable particle damper - Google Patents
Flexural type inhaul cable particle damper Download PDFInfo
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- CN103161235A CN103161235A CN2013100726714A CN201310072671A CN103161235A CN 103161235 A CN103161235 A CN 103161235A CN 2013100726714 A CN2013100726714 A CN 2013100726714A CN 201310072671 A CN201310072671 A CN 201310072671A CN 103161235 A CN103161235 A CN 103161235A
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- granule
- container
- damper
- connecting rod
- bending type
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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 the vibration control of civil engineering structure field, be specifically related to a kind of flexure type drag-line granule damper.
Background technology
In recent years, over strait, be used widely across the middle large span stayed-cable bridge of building of Jiang Daqiao.The increase of bridge span will cause reducing of Stiffness Variation of Superstructure, will be more prone to vibration-generating under the load actions such as vehicle, wind, and then causes the vibration of suspension cable.Simultaneously, for satisfying the requirements such as navigation, flood discharge, it is all higher that cable stayed bridge is generally built, and the eminence wind speed is large, the vibration aggravation that a direct problem of bringing like this is exactly suspension cable.If the vibration to drag-line is not controlled under the effect of above two kinds of factors, will cause serious consequence, gently reduce the drag-line life-span, heavy affect the safety of bridge.
For the vibration problem of suspension cable, different control methods has been arranged at present, control mode commonly used is composed of external damping device vibration damping.Common damper type has hydraulic damper, frictional property damper, magnetic to subtract damper, MR damper and high-damping rubber shock absorber etc.Hydraulic damper in these dampers commonly used, namely viscous damper is used at most, and technology is also the most ripe, but this damper cost is high, and the seal request of resisting medium is high, easily leakage of oil, the maintaining expense is higher, and is responsive to variations in temperature.For addressing these problems, need a kind of new damper of development.
The particle damping is used widely at Aero-Space, mechanical field, and field of civil engineering has also had related.The particle damping mainly by between particle and the mutual collision of particle and container, friction vibrational energy is converted into other forms of energy, thereby reach the effect of vibration damping, the particle in the while granule damper also has the mass tuning effect.Granule damper, simple structure, principle are clear and definite; Applicable band is wide, and certain effect is all arranged between 0-6000HZ; Cost is low; Therefore insensitive to variations in temperature, developing a kind ofly can provide vibration-damping function, and the granule damper that can overcome again existing damper shortcoming is highly significant.
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Summary of the invention
Technical problem to be solved by this invention is that a kind of flexure type drag-line granule damper will be provided, and it can play effective control to the vibration of drag-line, is not subjected to again influence of temperature change simultaneously, and cost is low, applicable band is wide.
For solving above technical problem, the invention provides a kind of flexure type drag-line granule damper, comprise damper lower support frame, bending type container for granule, filler particles and connected system, one end bolt of the upper steel plate of described damper lower support frame and 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 form by one section steel-pipe welding, and screw is set on steel plate, and lower steel plate is fixed in bridge floor, and upper steel plate is inclined, is used for fixedly 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 a plurality of bins.The division of container for granule bin can arrange two kinds, and a kind of is vertically to divide along container, and a kind of is laterally to divide along container.Concrete which kind of dividing mode that adopts can be selected by applicability.The bending type container for granule also comprises the container cover that encapsulates use, and after particles filled end, available bolt is contained in container cover on container, forms the container of a sealing.
Another link of described bending type container for granule is two noses with screw that stretch out, and two noses are separated by a distance.
The connecting rod of described connected system is the sealing 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 two noses of bending type container for granule, connects with bolt.Get the bin of suitable size under the prerequisite that guarantees connecting rod rigidity, be used for filler particles, treat particles filled completely, will encapsulate with steel plate with bolt and be connected to airtight connecting rod of the open side formation of connecting rod.
Described filler particles is severe larger steel ball or tungsten carbide pearl or lead sweat or coarse sand.
Superior effect of the present invention:
1) utilize the flexible of container, the inhaul cable vibration effect descends by connecting rod and acts on container for granule, causes the bend of vessel vibration, and then drives movement of particles, rely on mutual collision, friction consumed energy between intergranular and particle and container, filler particles also plays the mass tuning effect;
2) while filler particles in connecting rod, not only saved steel but also can increase damping;
3) damper of the present invention is granule damper, has bandwidth, to the insensitive characteristics of variations in temperature, and the material that uses is all insensitive to variations in temperature, so environment for use is not acted upon by temperature changes;
4) material used in the present invention is common steel, easily obtains, and does not need special materials processing, and manufacturing process is simple;
5) operating principle of the present invention is simple, and how with bolts the connection between member is, and Component composition is convenient, is convenient to install;
6) the present invention has overcome the hydraulic damper leakage of oil that Inclined Cable Vibration control is commonly used, has been subjected to the shortcomings such as influence of temperature change is large, manufacture process requirement is high.
Description of drawings
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;
The 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
See also shown in accompanying drawing, the invention will be further described.
As shown in Figure 1, the invention provides a kind of flexure type drag-line granule 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 steel pipe 12, and screw is set on steel plate, and lower steel plate 13 use expansion bolts are fixed in bridge floor, upper steel plate 11 arranges certain inclination angle and is used for fixedly bending type container for granule 2, connects with bolt.The welding of upper and lower steel plate and steel pipe 12, first with one section slightly larger in diameter on the welding of the steel ring of steel pipe and steel plate, and weld four triangle bloom supporting steel circles around steel ring, and then steel pipe 12 is inserted in steel ring both are welded together, form the lower support frame 1 of damper.
Bending type container for granule 2 is containers of the many bins of flexible layering, utilizes the inhaul cable vibration that the connected system 4 of bending type container for granule 2 transmits and the motion that causes particle, consumed energy.Layering, Fen Cang cause the particle extruding for fear of particle aggregation, bending type container for granule 2 needs to keep a side opening in order to filler particles 3, bending type container for granule 2 can form or is welded and at the edge of its open side, screw is set by the casting technique one-step casting, closes container in order to the connecting container cap seal.The front of bending type container for granule 2 arranges link, and link is comprised of two noses 22 with screw that stretch out, and two noses 22 are separated by a distance is used for inserting connecting rod 41.The division of bin 21 can be taked different modes as shown in Figure 3, Figure 4.Can adopt the particle of different-grain diameter according to the starting of oscillation amplitude of particle for container shown in Figure 4, the general large employing large-size particles of amplitude, the employing small size particle that amplitude is little.Particles filled complete after, available bolt is arranged on container cover on container, thereby forms closed container.
As shown in Figure 5, filler particles 3 can adopt the particles such as the larger steel ball of severe, tungsten carbide pearl, coarse sand, and the effect of filler particles is mainly by friction, collision consumed energy, adopts suitable filling rate when particles filled.
As shown in Figure 6, but connected system 4 comprise one with the filler particles of bin 42, the open connecting rod 41 in side, be used for connecting the noose of drag-line and be used for bolt that pin connects and steel plate that the encapsulation connecting rod is used.Get the bin 42 of suitable size under the prerequisite of the rigidity that guarantees connecting rod, treat particles filled completely, will encapsulate with steel plate with bolt and be connected to airtight connecting rod 41 of the open side formation of connecting rod.Noose is bolted on drag-line, with connecting rod 41, bending type container for granule 2 and drag-line is linked together.
When being subject to external influence, suspension cable produces vibration; vibration will cause by connecting rod 41 bending of bending type container for granule 2; this moment, flexible container for granule 2 was similar to the semi girder that free end is subjected to lateral force; it can produce flexural vibrations under the effect of vibration of the suspension cable that connected system 4 transmits; 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; thereby consume 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, the particle interior with bending type container for granule 2 has identical effect.
Claims (6)
1. flexure type drag-line granule damper, comprise damper lower support frame, bending type container for granule, filler particles and connected system, it is characterized in that: an end bolt of the upper steel plate of described damper lower support frame and 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 drag-line granule damper according to claim 1 is characterized in that: described damper lower support frame, and upper and lower two block plates form by one section steel-pipe welding, and lower steel plate is fixed in bridge floor, and upper steel plate is inclined.
3. flexure type drag-line granule damper according to claim 1, it 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 drag-line granule damper according to claim 1, it is characterized in that: another link of described bending type container for granule is two noses with screw that stretch out, and two noses are separated by a distance.
5. flexure type drag-line granule damper according to claim 1 is characterized in that: the connecting rod of described connected system, be the sealing connecting rod with bin, and place 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 two noses of bending type container for granule, connects with bolt.
6. according to claim 3 or 5 described flexure type drag-line granule dampers, it is characterized in that: described filler particles is severe larger steel ball 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161235A true CN103161235A (en) | 2013-06-19 |
| CN103161235B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002997A (en) * | 2015-07-10 | 2015-10-28 | 西安建筑科技大学 | Open type damper arrangement mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030093869A1 (en) * | 2001-11-19 | 2003-05-22 | Christian Petersen | Cable damper |
| 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 |
-
2013
- 2013-03-07 CN CN201310072671.4A patent/CN103161235B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030093869A1 (en) * | 2001-11-19 | 2003-05-22 | Christian Petersen | Cable damper |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002997A (en) * | 2015-07-10 | 2015-10-28 | 西安建筑科技大学 | Open type damper arrangement mechanism |
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| CN103161235B (en) | 2015-06-24 |
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