CN208023768U - A kind of collisional quenching bar based on piezoelectricity energy consumption - Google Patents

A kind of collisional quenching bar based on piezoelectricity energy consumption Download PDF

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CN208023768U
CN208023768U CN201820317411.7U CN201820317411U CN208023768U CN 208023768 U CN208023768 U CN 208023768U CN 201820317411 U CN201820317411 U CN 201820317411U CN 208023768 U CN208023768 U CN 208023768U
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energy
guide rod
collision
inner end
hole
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付兴
李宏男
王金鑫
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Dalian University of Technology
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Dalian University of Technology
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Abstract

The utility model belongs to structural vibration control technology field more particularly to a kind of collisional quenching bar to consume energy based on piezoelectricity.The buffer beam includes energy by collision damping unit, hollow stem, inner end plate, drawing-pressing spring, collision body and guide rod;Hollow stem is to be internally provided with multiple equidistant, equal diameter Hollow circular beams with through-hole wafer architecture, and the inner end plate of the both ends setting integral structure of hollow stem constitutes cavity between hollow stem and two inner end plates, multiple energy by collision damping units are arranged in cavity;The utility model utilizes the distinctive piezoelectric effect of piezoelectric ceramics, converts the mechanical energy of structure to the thermal energy that energy of position is then converted into conductor piece again using electricresistance effect, constantly by energy dissipation, realizes the good effectiveness in vibration suppression of structure;The energy by collision of the utility model damps hollow stem, can be very convenient with the connection of agent structure as the replacement bar or addition rod of agent structure rod piece.

Description

A kind of collisional quenching bar based on piezoelectricity energy consumption
Technical field
The utility model belongs to structural vibration control technology field more particularly to a kind of collisional quenching to consume energy based on piezoelectricity Bar.
Background technology
The advantages that space grid structure is with its novel structure type, graceful architectural image and powerful span ability, It has been widely used in the fields such as public building and industrial building.Especially in recent years, with some great social and economicals of China A collection of high standard, the stadiums of high standard, conference & exhibition shop, airport building, high ferro Zhan Deng societies have been built in movable development Meeting public building, these buildings are often also a city or country as Important Project while providing power Landmark building, therefore ensure that its safety under the dynamic load functions such as earthquake, typhoon is particularly important.But with this class formation Span increases, height increases and structure type it is increasingly complicated, the engineering structure conventionally designed is in strong earthquakes/strong Under the effects that wind, larger dynamic response is often will produce, damages or collapses.The vibration control skill quickly grown in recent years Art is to ensure that the safe and reliable of this class formation provides a new way.
Structural vibration control is to resist outer lotus jointly by structure and control system by the way that control system is arranged in structure It carries, to reduce the dynamic response of structure.The control system for being usually used in large span spatial structure mainly has:It is arranged on structure node TMD systems;Viscous or viscoelastic damper is arranged using additional rod-type;Using rod-type is replaced, viscous damper is set;Using for Change the controllable chords of rod-type setting variation rigidity or variable damping;Viscoelastic damping bearing is set;ER or MR dampers etc. are set.
The dampers using developing materials such as viscoelastic material, viscous fluids various in recent years achieve good vibration damping effect Fruit, but such damper be applied to engineering in practice when need overcome fatigue, aging, durability and fluid damper that may deposit Leakage phenomenon the problems such as.Piezoelectricity energy consumption impact damper is to convert mechanical energy to piezoelectric ceramics based on law of conservation of energy Then energy of position inside piece converts energy of position to thermal energy come the vibrational energy of dissipative system by the electricresistance effect of conductor plate Amount.Collision body is collided when hollow stem is moved with the piezoelectric ceramic piece for being surrounded by rubber layer, due to being pressurized, is generated in piezoelectric ceramic piece Energy of position, rubber play energy consumption and vibration isolation protective effect;The energy of position generated in piezoelectric ceramic piece simultaneously is by electricresistance effect with heat The form of energy is constantly dissipated in the environment of surrounding.Compared with other types damper, piezoelectricity energy consumption impact damper has It is simple in structure, abrasion it is small, without working media, long lifespan and rigidity and damping easily adjust the features such as, have high application before Scape.
Therefore, piezo technology is combined by the utility model with other passive damping technologies, is provided a kind of based on piezoelectricity The collisional quenching bar of energy consumption, can meet simultaneously structure slightly, substantially vibrate when to the damping requirements of damper, have very high Engineering application value.
Utility model content
Piezo technology is combined by the utility model with other passive damping technologies, provides and a kind of is consumed energy based on piezoelectricity Collisional quenching bar.Drawing-pressing spring and energy by collision damping unit work together in bar, not only significantly enhance damping hollow stem Consume energy control effect, and disclosure satisfy that structure when slightly and substantially vibrating to the damping requirements of damper.
The technical solution of the utility model:
A kind of collisional quenching bar based on piezoelectricity energy consumption, including energy by collision damping unit, hollow stem 1, inner end plate 3, drawing Pressing spring 5, collision body 6 and guide rod 9;
The hollow stem 1 is to be internally provided with multiple equidistant, equal diameter Hollow circular beams with through-hole wafer architecture, empty The inner end plate 3 of the both ends setting integral structure of core bar 1, constitutes cavity between hollow stem 1 and two inner end plates 3, is arranged in cavity Multiple energy by collision damping units;
The lateral surface setting intersecting parallels ribbed stiffener 10 of the inner end plate 3, the center of inner end plate 3 is equipped with through-hole, and guide rod 9 is worn The through-hole of inner end plate 3 and disk is crossed, and is slided wherein;The outer wall surrounding at 9 both ends of guide rod is provided with ball groove, described Inner end plate 3 through-hole internal ring wall on be provided with on guide rod 9 ball groove cooperation ball groove, ball 4 embedded in ball it is recessed In slot, completes the displacement to guide rod 9 jointly with ball groove and be oriented to, guide rod 9 is made to be slided in through-hole;
The energy by collision damping unit, including conductor piece 2, round rubber gasket 7 and piezoelectric ceramic piece 8;
The conductor piece 2 is made of the metal material with high resistivity, and center is provided with through-hole, and through-hole diameter, which is more than, leads The diameter of bar 9;Multiple conductor pieces 2 pass through guide rod 9 and are fixed on disk, and conductor piece 2 is vertical with the inner wall of hollow stem 1;
The piezoelectric ceramic piece 8, center are provided with through-hole, and through-hole diameter is more than the Circularhole diameter of guide rod 9, is bonded in conductor The both sides of piece 2, the conducting wire of piezoelectric ceramic piece 8 are connect with conductor piece 2;When piezoelectric ceramic piece 8 be under pressure effect when, its two A end face generates voltage difference, forms electrical circuit;
The round rubber gasket 7, center are provided with through-hole, and through-hole diameter is more than the Circularhole diameter of guide rod 9, is bonded in pressure The surface of electroceramics piece 8, piezoelectric ceramic piece 8 are wrapped up by round rubber gasket 7, to protect piezoelectric ceramic piece 8 in collision process;
The guide rod 9 sequentially passes through the through-hole at multiple energy by collision damping units center, in energy by collision damping unit The through-hole diameter of the heart is more than the diameter of guide rod 9, and 9 friction free of guide rod moves back and forth;
The collision body 6 is fixed between two neighboring energy by collision damping unit on guide rod 9 at equal intervals, It also is provided with collision body 6 on the outside of the energy by collision damping unit at both ends;When hollow stem 1 vibrates, collision body 6 and energy by collision damping are single Member is in contact;
The drawing-pressing spring 5, is sleeved on the both ends of guide rod 9, is limited between the inside of inner end plate 3 and collision body 6, draws 5 one end of pressing spring is connected on inner end plate 3, and the other end is connected on adjacent collision body 6.
Operation principle:When low amplitude vibrations occur for structure, swung the machine of structure by drawing-pressing spring and the small size of collision body Tool can be converted into the elastic potential energy in drawing-pressing spring, and operation principle is put with tuned mass damper or quality at this time;When structure is sent out When life is substantially vibrated, each collision body collides in the case where the displacement of guide rod is oriented to energy by collision damping unit, has rubber The energy by collision damping unit of layer converts inside the thermal energy and piezoelectric ceramics of rubber layer sorption enhanced the mechanical energy of structure to Energy of position, energy of position are converted into the thermal energy of conductor piece by electricresistance effect and are constantly dissipated again;When the amplitude of structure is bigger, collision body Collision energy it is bigger, piezoelectric ceramics and the corresponding energy dissipation of rubber layer are more.
The beneficial effects of the utility model:
(1) the energy by collision buffer beam of the utility model is consumed energy jointly by rubber sheet gasket compressive deformation and conductor piece heat dissipation, Significantly enhance energy consumption control effect.When low amplitude vibrations occur for structure, by collision body and drawing-pressing spring by the mechanical energy of structure The elastic potential energy being converted into spring;When structure generation is substantially vibrated, the mechanical energy of structure is converted by energy by collision unit For the thermal energy of the energy of position and rubber layer sorption enhanced of piezoelectric ceramics, later, due to electricresistance effect, the energy of position of piezoelectric ceramics is logical It crosses conductor piece and is converted into thermal energy, realize that the classification of energy dissipates.
(2) the energy by collision buffer beam of the utility model is touched by the quantity and spacing, change of adjusting energy consumption damping unit The quality of collision body, or the specification of piezoelectric ceramic piece is adjusted, the adjusting of energy by collision unit damping parameter can be achieved;Pass through tune The rigidity for saving drawing-pressing spring, the damping parameter that may be implemented under low amplitude vibrations are adjusted.
(3) the energy by collision buffer beam of the utility model, using the distinctive piezoelectric effect of piezoelectric ceramics, without extraneous energy Source, since the holding of the physical property of piezoelectric ceramics and conductor piece remains unchanged for a long period of time, damping hollow stem can provide vibration damping steady in a long-term Effect has good durability.
(4) the energy by collision buffer beam of the utility model, can as the replacement bar or addition rod of agent structure rod piece, with The connection of agent structure is very convenient.
(5) the energy by collision buffer beam of the utility model, have simple structure, without working media, long lifespan, be easy to tie up The advantages that shield.
Description of the drawings
Fig. 1 is a kind of longitudinal sectional drawing for collisional quenching bar to be consumed energy based on piezoelectricity that the utility model embodiment provides;
Fig. 2 is a kind of A-A sectional views for collisional quenching bar to be consumed energy based on piezoelectricity that the utility model embodiment provides;
Fig. 3 is a kind of B-B sectional views for collisional quenching bar to be consumed energy based on piezoelectricity that the utility model embodiment provides;
Fig. 4 is a kind of C-C sectional views for collisional quenching bar to be consumed energy based on piezoelectricity that the utility model embodiment provides.
In figure:1 hollow stem;2 conductor pieces;3 inner end plates;4 balls;5 drawing-pressing springs;6 collision bodies;
7 round rubber gaskets;8 piezoelectric ceramic pieces;9 guide rods;10 intersecting parallels ribbed stiffeners.
Specific implementation mode
Below in conjunction with attached drawing and technical solution, specific embodiment of the present utility model is further illustrated.
As shown in Figure 1 to Figure 4, the utility model provides a kind of collisional quenching bar to consume energy based on piezoelectricity, including:Hollow stem 1 is led Body piece 2, inner end plate 3, ball 4, drawing-pressing spring 5, collision body 6, round rubber gasket 7, piezoelectric ceramic piece 8, guide rod 9 and intersecting parallels Ribbed stiffener 10;
In the present embodiment, hollow stem 1 is equal diameter Hollow circular beam, and at the both ends of hollow stem 1, setting inner end plate 3 constitutes sky Energy by collision damping unit is arranged in chamber in this cavity, and the quantity for the damping unit that consumes energy can need to adjust according to structure, interior End plate 3 plays support and guiding role;When the setting of energy by collision damping unit is more, the conductor piece 2 in cavity can be thickeied The similar ball groove end plate that carries is made as to ensure that guide rod 9 has good support.
Intersecting parallels ribbed stiffener 10 and the lateral surface of inner end plate 3 and the inner wall of hollow stem 1 is affixed, ensure inner end plate 3 and sky The reliability that core bar 1 connects;
Guide rod 9 is radially fixed in 3 centre of inner end plate, and surrounding is provided with ball groove;
Guide rod 9 passes through the circular hole reserved on inner end plate 3, the circular-hole internal-wall on inner end plate 3 to be provided with ball groove, pass through ball 4 make guide rod 9 reciprocatingly slide;
In ball groove of the ball 4 embedded in guide rod 9 with inner end plate 3, the displacement to guide rod 9 is completed jointly with ball groove It is oriented to;
Conductor piece 2 is consolidated in inside hollow stem 1, at equal intervals between two inner end plates 3, and conductor piece 2 uses high resistivity Metal material, electric current generate resistance thermal dissipation it is apparent;
Piezoelectric ceramic piece 8 is bonded in the both sides of conductor piece 2, and the positive and negative anodes of piezoelectric ceramic piece 8 are connected by copper wire and conductor piece 2 It connects, forms current loop, converting energy of position to thermal energy using the electricresistance effect of conductor piece 2 carries out energy dissipation;
Round rubber gasket 7 is bonded in 8 surface of piezoelectric ceramics and wraps piezoelectric ceramics, when a collision occurs, can incite somebody to action Part energy is converted into the elastic potential energy and thermal energy of rubber pad, while piezoelectric ceramic piece being protected not destroy;
Collision body 6 is consolidated on guide rod 9, quantity at equal intervals between two neighboring energy by collision damping unit One more than energy consumption damping unit, arrangement spacing is identical with the energy consumption spacing of damping unit, and in structural vibration, guide rod 9 drives Collision body 6 moves reciprocatingly, and ensures each collision body while contacting each energy consumption damping unit, and energy consumption damping unit receives simultaneously Collision makes energy dissipation reach maximum;
5 one end of drawing-pressing spring is connected on inner end plate 3, and the other end is connected on outermost collision body 6;On the one hand, it draws The elastic potential energy of pressing spring 5 can convert the mechanical energy of structural vibration, on the other hand, be limited to collision body 6, structure does not have When having vibration, equilbrium position is kept it in;
The energy by collision of the utility model damps hollow stem, can as the replacement bar or addition rod of agent structure rod piece, It is very convenient with the connection of agent structure.
The damping hollow stem of the utility model, it is common by collision body 6 and drawing-pressing spring 5 when low amplitude vibrations occur for structure Work converts the mechanical energy of structure to elastic potential energy;When structure generation is substantially vibrated, collision body 6 is under the guiding of guide rod 9 It collides with energy by collision damping unit, converts mechanical energy to the electricity of the thermal energy and piezoelectric ceramic piece 8 of round rubber gasket 7 Potential energy, the conductor piece 2 for collectively constituting electrical circuit with piezoelectric ceramic piece 8 have larger resistivity, can convert energy of position to heat Can, to carry out energy dissipation.
The energy by collision of the utility model damps hollow stem, by changing the quantity of energy by collision damping unit, realizes consumption The adjusting of energy size;The adjusting for adapting to various amplitude vibration may be implemented in the spacing for changing each energy by collision damping unit;Together When, since the holding of the physical property of piezoelectric ceramic piece 8 and conductor piece 2 remains unchanged for a long period of time, damping hollow stem can provide steady in a long-term Effectiveness in vibration suppression.
The energy by collision of the utility model damps hollow stem, also has simple structure, without working media, long lifespan, easily In safeguard the advantages that, it is with a wide range of applications.
It is needed to pay attention to when designing the utility model:First, the energy by collision element number and tension and compression bullet of this damping hollow stem The rigidity of spring should be according to the oscillation intensity reasonable value of structure;Second, the outer diameter of collision body 6 is greater than the outer of piezoelectric ceramic piece 8 Diameter, to realize abundant effective collision;Third, piezoelectric ceramic piece 8 bond secured, copper wire 11 and piezoelectric ceramic piece with conductor piece 2 8 and conductor piece 2 connection it is secured, ensure electrical circuit even running;4th, round rubber gasket 7 will wrap piezoelectric ceramics Piece 8, the piezoelectricity pottery piece 8 that adequately protects are unlikely to destroy when being impacted;5th, this damping hollow stem is in engineering structure Installation position should be according to corresponding vibration damping scheme and control targe reasonable Arrangement.
Above example is only to illustrate the technical solution of the utility model, rather than its limitations;Although with reference to aforementioned reality Example is applied the utility model is described in detail, it will be understood by those of ordinary skill in the art that:It still can be to preceding The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features;And these Modification or replacement, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (1)

1. a kind of collisional quenching bar based on piezoelectricity energy consumption, which is characterized in that the buffer beam includes energy by collision damping unit, sky Core bar (1), inner end plate (3), drawing-pressing spring (5), collision body (6) and guide rod (9);
The hollow stem (1) is to be internally provided with multiple equidistant, equal diameter Hollow circular beams with through-hole wafer architecture, hollow The inner end plate (3) of the both ends setting integral structure of bar (1), constitutes cavity, in cavity between hollow stem (1) and two inner end plates (3) The interior multiple energy by collision damping units of setting;
The center of the lateral surface setting intersecting parallels ribbed stiffener (10) of the inner end plate (3), inner end plate (3) is equipped with through-hole, guide rod (9) through-hole of inner end plate (3) and disk is passed through, and is slided wherein;The outer wall surrounding at described guide rod (9) both ends is provided with ball Groove is provided with the ball groove with the ball groove cooperation on guide rod (9), rolling on the through-hole internal ring wall of the inner end plate (3) The displacement that pearl (4) completes in ball groove, with ball groove to guide rod (9) jointly is oriented to, and keeps guide rod (9) sliding in through-hole It is dynamic;
The energy by collision damping unit, including conductor piece (2), round rubber gasket (7) and piezoelectric ceramic piece (8);
The conductor piece (2) is made of the metal material with high resistivity, and center is provided with through-hole, and through-hole diameter is more than guide rod (9) diameter;Multiple conductor pieces (2) pass through guide rod (9) and are fixed on disk, and conductor piece (2) and the inner wall of hollow stem (1) hang down Directly;
The piezoelectric ceramic piece (8), center are provided with through-hole, and through-hole diameter is more than the Circularhole diameter of guide rod (9), is bonded in conductor The both sides of piece (2), piezoelectric ceramic piece (8) are connect with conducting wire with conductor piece (2);When piezoelectric ceramic piece (8) is under pressure effect, Voltage difference is generated in two end face, forms electrical circuit;
The round rubber gasket (7), center are provided with through-hole, and through-hole diameter is more than the Circularhole diameter of guide rod (9), is bonded in pressure The surface of electroceramics piece (8), piezoelectric ceramic piece (8) is wrapped up by round rubber gasket (7), to protect piezoelectricity to make pottery in collision process Tile (8);
The guide rod (9) sequentially passes through the through-hole at multiple energy by collision damping units center, energy by collision damping unit center Through-hole diameter be more than guide rod (9) diameter, guide rod (9) friction free move back and forth;
The collision body (6) is fixed between two neighboring energy by collision damping unit on guide rod (9) at equal intervals, It also is provided with collision body (6) on the outside of the energy by collision damping unit at both ends;When hollow stem (1) vibrates, collision body (6) and energy by collision Damping unit is in contact;
The drawing-pressing spring (5), is sleeved on the both ends of guide rod (9), is limited between the inside of inner end plate (3) and collision body (6), Drawing-pressing spring (5) one end is connected on inner end plate (3), and the other end is connected on adjacent collision body (6).
CN201820317411.7U 2018-03-08 2018-03-08 A kind of collisional quenching bar based on piezoelectricity energy consumption Active CN208023768U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110380375A (en) * 2019-08-12 2019-10-25 山东大学 A kind of triggering type piezoelectric ceramics energy consumption conductor spacer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110380375A (en) * 2019-08-12 2019-10-25 山东大学 A kind of triggering type piezoelectric ceramics energy consumption conductor spacer

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