CN102936927A - Lattice type power transmission tower horizontal vibration self-reset shock absorber - Google Patents
Lattice type power transmission tower horizontal vibration self-reset shock absorber Download PDFInfo
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- CN102936927A CN102936927A CN2012104225734A CN201210422573A CN102936927A CN 102936927 A CN102936927 A CN 102936927A CN 2012104225734 A CN2012104225734 A CN 2012104225734A CN 201210422573 A CN201210422573 A CN 201210422573A CN 102936927 A CN102936927 A CN 102936927A
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Abstract
The invention discloses a lattice type power transmission tower horizontal vibration self-reset shock absorber which comprises shape memory alloy rings, a steel ball, an anchor bolt, a steel suspension rod and a steel suspension ring, wherein the lower end of the steel suspension rod is fixedly connected with the steel ball; the upper end of the steel suspension rod is fixedly connected with the steel suspension ring; the steel suspension ring is hung at the top center of a power transmission tower; four shape memory alloy rings are provided and anchored at the four corners of the tower body of the power transmission tower; the four shape memory alloy rings are all horizontally arranged and uniformly distributed around the periphery of the steel ball; the centers of the four shape memory alloy rings are located on the circumference of the same circle centered on the steel ball; the steel ball absorbs shock and consumes energy by use of the shake thereof in the case of small amplitude; and in the case of large amplitude, the steel ball can collide with the shape memory alloy rings to consume energy so as to realize shock absorption.
Description
Technical field
The present invention relates to belong to the dampening apparatus of civil engineering, specifically refer to a kind of lattice power transmission tower horizontal vibration Self-resetting shock absorber.
Background technology
Transmission Tower-line System is the carrier of high load capacity power delivery, is important lifeline engineering structures.Along with economic development, scientific and technological progress and environmental consciousness strengthen, industrial production and resident living increase powerful to the demand of electric energy.The project scale of Transmission Tower-line System is tending towards maximizing at present gradually, form of structure is complicated and changeable, the construction costs index significantly improves, therefore, electric power lifeline engineering structures design theory has been proposed Secretary with preventing and reducing natural disasters, guaranteed that the safety and stability of its use becomes Structural Engineering circle problem in the urgent need to address.Compare with common overhead transmission line, the lattice power transmission tower has the common feature that housing structure is high, span large, overall structure softens, has concurrently tower-like tall and slender structure and longspan structure.Except seismic load, this structural system is to wind, and the action response of the environmental loads such as rain and icing is responsive, easily the dynamic collapse under vibration-generating fatigue damage and the extreme condition.How effectively to alleviate the horizontal vibration response of lattice power transmission tower under the extraneous loads such as wind, rain and icing, the performance of combating a natural disaster that improves tower is one of problem demanding prompt solution in the field of civil engineering.
Structural vibration control can alleviate the damage under the effect of structure outer load effectively, improves the performance of taking precautions against natural calamities of structure.Vibration isolation can consume vibrational energy by vibration damping, isolation mounting, perhaps offsets the external load effect to the impact of structure by applying energy.Specifically install certain device, mechanism or minor structure at some position of structure, to change or to adjust dynamic characteristics or the dynamic action of structure, the dynamic response under the effect of structure outer load is reasonably controlled.Damping technology is relatively ripe, yet as a kind of passive control device, durability and making simplification are ubiquitous problems in the present shock absorber.Safeguard as viscous damper is difficult, frcition damper can not Self-resetting, and mild steel damper has plasticity permanent set etc.Marmem is a kind of new function material, has shape memory effect, super-elasticity and high damping characteristic.The advantages such as the marmem shock absorber is compared with the shock absorber of other types, has durability and corrosion resistance and good, and life cycle is long, and distortion is large and can recover.In addition, the response of lattice power transmission tower under the random load effects such as high wind and mechanical oscillation is random, and one of performance is exactly the randomness of vibratory response direction.Damper or the shock absorber developed at present only have the passive energy dissipation ability of single direction usually, the difficult multidirectional control of level that realizes in the engineering own.
Therefore, develop a kind of horizontal vibration Self-resetting shock absorber to guaranteeing the safety of lattice power transmission tower, reduce unfavorable vibration and have important practical significance.
Summary of the invention
The purpose of this invention is to provide a kind of lattice power transmission tower horizontal vibration Self-resetting shock absorber, this can solve, and existing power transmission tower vibration absorber durability is short, energy dissipation capacity is limited, can not Self-resetting, problem that can only the single direction vibration damping.
Above-mentioned purpose of the present invention realizes by following technical solution: lattice power transmission tower horizontal vibration Self-resetting shock absorber, it is characterized in that: this shock absorber comprises the marmem annulus, the steel ball, crab-bolt, steel suspension rod and steel suspension ring, wherein, the lower end of steel suspension rod is fixedly connected with the steel ball, the upper end of steel suspension rod is fixedly connected with the steel suspension ring, the steel suspension ring are used for being suspended on the top center place of power transmission tower, described marmem annulus is four, four marmem annulus are anchored at four bights of the body of the tower of power transmission tower, four marmem annulus all are horizontally disposed with, and evenly be arranged on around the periphery of steel ball, the center of circle of four marmem annulus is on the circumference of the same circle take the steel ball as the center of circle, described steel ball hour only depends on the oscillation damping and energy dissipating that rocks of self at amplitude, when amplitude is larger, the steel ball can bump to consume energy with the marmem annulus, thereby reaches the vibration damping purpose.
Among the present invention, weld mutually with the steel ball lower end of steel suspension rod, and weld mutually with the steel suspension ring upper end of steel suspension rod.
Among the present invention, described four marmem annulus are anchored at respectively four bights of the body of the tower of power transmission tower by crab-bolt.
The vibration attenuation mechanism of shock absorber of the present invention moves health just as being in the people who rocks on the canoe towards the opposite direction that canoe rocks, average out.When high wind or other external loads caused the power transmission tower vibration, on the one hand, the steel ball cand be compared to huge " pendulum ", made this shock absorber produce a kind of strength opposite with external load, thereby the counteracting external load is to the adverse effect of power transmission tower; On the other hand, when the steel sphere swinging, can bump with the marmem annulus that is anchored at the power transmission tower bight, reach the purpose of exchange momentum and dissipation kinetic energy.Therefore, the energy dissipation capacity of this shock absorber is directly proportional with amplitude, namely when amplitude hour, the steel ball can not bump with the marmem annulus, only depends on the oscillation damping and energy dissipating that rocks of steel ball self, and relies on Action of Gravity Field to recover the position of steel ball; When amplitude is larger, except the power consumption of rocking of steel ball, the steel ball can with the marmem annulus that is anchored at the power transmission tower bight power consumption that bumps, thereby reach the purpose of secondary vibration damping; In addition, the good superelastic properties of marmem annulus make return to the original form rapidly after its distortion power consumption and meeting so that the steel ball can Rapid reset.
Compared with prior art, effect of the present invention and benefit are mainly reflected in shock absorber can provide different energy dissipation capacities according to structural amplitude different, this shock absorber also has preferably fatigue resistance, and maintenance cost is low, simple structure, easy for installation, the vibration damping that can realize any level line.This lattice power transmission tower horizontal vibration Self-resetting shock absorber will be widely used in engineering structures Vibration Absorption Designing field so that power transmission tower Vibration Absorption Designing process is more convenient, practical.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
Fig. 1 is the top view of lattice power transmission tower horizontal vibration Self-resetting shock absorber of the present invention.
Fig. 2 is the side elevational view of lattice power transmission tower horizontal vibration Self-resetting shock absorber of the present invention.
Fig. 3 is the scheme of installation of lattice power transmission tower horizontal vibration Self-resetting shock absorber of the present invention on a certain main shaft of power transmission tower.
Fig. 4 is the scheme of installation of lattice power transmission tower horizontal vibration Self-resetting shock absorber of the present invention on another main shaft of power transmission tower.
Description of reference numerals
Among the figure: 1. marmem annulus; 2. body of the tower; 3. steel ball; 4. crab-bolt; 5. steel suspension rod; 6. steel suspension ring.
The specific embodiment
Such as Fig. 1, lattice power transmission tower horizontal vibration Self-resetting shock absorber shown in Figure 2, this shock absorber comprises marmem annulus 1, steel ball 3, crab-bolt 4, steel suspension rod 5 and steel suspension ring 6, wherein, the lower end of steel suspension rod 5 and steel ball 3 are fixedly connected with by welding manner, the upper end of steel suspension rod 5 and steel suspension ring 6 are fixedly connected with by welding manner, steel suspension ring 6 are used for being suspended on the top center place of power transmission tower, described marmem annulus 1 is four, four marmem annulus 1 are anchored at respectively four bights of the body of the tower 2 of power transmission tower by crab-bolt 4, four marmem annulus 1 all are horizontally disposed with, and evenly be arranged on around the periphery of steel ball 3, the center of circle of four marmem annulus 1 is on the circumference of the same circle take steel ball 3 as the center of circle, each marmem ring 1 all equates with beeline between the steel ball 3, described steel ball 3 hour only depends on the oscillation damping and energy dissipating that rocks of self at amplitude, when amplitude is larger, steel ball 3 can bump to consume energy with marmem annulus 1, thereby reaches the vibration damping purpose.
The installation process of this shock absorber is as follows:
The above embodiment of the present invention is not the restriction to protection domain of the present invention; embodiments of the present invention are not limited to this; all this kind is according to foregoing of the present invention; ordinary skill knowledge and customary means according to this area; do not breaking away under the above-mentioned fundamental technics thought of the present invention prerequisite; modification, replacement or the change of other various ways that said structure of the present invention is made all should drop within protection scope of the present invention.
Claims (3)
1. lattice power transmission tower horizontal vibration Self-resetting shock absorber, it is characterized in that: this shock absorber comprises marmem annulus (1), steel ball (3), crab-bolt (4), steel suspension rod (5) and steel suspension ring (6), wherein, the lower end of steel suspension rod (5) is fixedly connected with steel ball (3), the upper end of steel suspension rod (5) is fixedly connected with steel suspension ring (6), steel suspension ring (6) are used for being suspended on the top center place of power transmission tower, described marmem annulus (1) is four, four marmem annulus (1) are anchored at four bights of the body of the tower (2) of power transmission tower, four marmem annulus (1) all are horizontally disposed with, and evenly be arranged on around the periphery of steel ball (3), the center of circle of four marmem annulus (1) is in take steel ball (3) on the circumference of the same circle in the center of circle, described steel ball (3) hour only depends on the oscillation damping and energy dissipating that rocks of self at amplitude, when amplitude is larger, steel ball (3) can bump to consume energy with marmem annulus (1), thereby reaches the vibration damping purpose.
2. lattice power transmission tower horizontal vibration Self-resetting shock absorber according to claim 1, it is characterized in that: weld mutually with steel ball (3) lower end of steel suspension rod (5), and weld mutually with steel suspension ring (6) upper end of steel suspension rod (5).
3. lattice power transmission tower horizontal vibration Self-resetting shock absorber according to claim 1, it is characterized in that: described four marmem annulus (1) are anchored at respectively four bights of the body of the tower (2) of power transmission tower by crab-bolt (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104225734A CN102936927A (en) | 2012-10-29 | 2012-10-29 | Lattice type power transmission tower horizontal vibration self-reset shock absorber |
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| CN2012104225734A CN102936927A (en) | 2012-10-29 | 2012-10-29 | Lattice type power transmission tower horizontal vibration self-reset shock absorber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003116A (en) * | 2015-06-09 | 2015-10-28 | 广东电网有限责任公司电力科学研究院 | Overhead power transmission tower with high integral wind-resistant performance |
| CN105552813A (en) * | 2016-01-26 | 2016-05-04 | 大连理工大学 | Collision energy-dissipation spacing rod |
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| CN2589551Y (en) * | 2002-12-12 | 2003-12-03 | 杭州电联机电设备成套有限公司 | Single tube tower control displacement vibration-damping apparatus |
| CN1840794A (en) * | 2005-12-13 | 2006-10-04 | 滕军 | Dynamic vibration absorption and energy consumption apparatus for reducing wind vibration response of high tower structure |
| US20080016794A1 (en) * | 2004-03-03 | 2008-01-24 | Robert Tremblay | Self-Centering Energy Dissipative Brace Apparatus With Tensioning Elements |
| CN102444684A (en) * | 2011-11-14 | 2012-05-09 | 江苏宇杰钢机有限公司 | Vibration absorber for cycloid type wind driven generator tower |
| CN102535674A (en) * | 2012-02-22 | 2012-07-04 | 广东电网公司电力科学研究院 | Tempering damper system used for improving wind resistance stability of transmission tower based on single pendulum model |
| CN202913523U (en) * | 2012-10-29 | 2013-05-01 | 广东电网公司电力科学研究院 | Lattice-type power transmission tower horizontal vibration self-resetting absorber |
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2012
- 2012-10-29 CN CN2012104225734A patent/CN102936927A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2589551Y (en) * | 2002-12-12 | 2003-12-03 | 杭州电联机电设备成套有限公司 | Single tube tower control displacement vibration-damping apparatus |
| US20080016794A1 (en) * | 2004-03-03 | 2008-01-24 | Robert Tremblay | Self-Centering Energy Dissipative Brace Apparatus With Tensioning Elements |
| CN1840794A (en) * | 2005-12-13 | 2006-10-04 | 滕军 | Dynamic vibration absorption and energy consumption apparatus for reducing wind vibration response of high tower structure |
| CN102444684A (en) * | 2011-11-14 | 2012-05-09 | 江苏宇杰钢机有限公司 | Vibration absorber for cycloid type wind driven generator tower |
| CN102535674A (en) * | 2012-02-22 | 2012-07-04 | 广东电网公司电力科学研究院 | Tempering damper system used for improving wind resistance stability of transmission tower based on single pendulum model |
| CN202913523U (en) * | 2012-10-29 | 2013-05-01 | 广东电网公司电力科学研究院 | Lattice-type power transmission tower horizontal vibration self-resetting absorber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003116A (en) * | 2015-06-09 | 2015-10-28 | 广东电网有限责任公司电力科学研究院 | Overhead power transmission tower with high integral wind-resistant performance |
| CN105552813A (en) * | 2016-01-26 | 2016-05-04 | 大连理工大学 | Collision energy-dissipation spacing rod |
| CN105552813B (en) * | 2016-01-26 | 2017-08-22 | 大连理工大学 | A kind of energy by collision conductor spacer |
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Application publication date: 20130220 |