CN209823365U - Damper based on piezoelectric energy consumption - Google Patents
Damper based on piezoelectric energy consumption Download PDFInfo
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- CN209823365U CN209823365U CN201920832078.8U CN201920832078U CN209823365U CN 209823365 U CN209823365 U CN 209823365U CN 201920832078 U CN201920832078 U CN 201920832078U CN 209823365 U CN209823365 U CN 209823365U
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- thin steel
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- 238000005265 energy consumption Methods 0.000 title abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000013016 damping Methods 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003190 viscoelastic substance Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005381 potential energy Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
The utility model provides a damper based on piezoelectricity power consumption belongs to power equipment and relevant technical field. The device comprises a rubber sheet, a thin steel sheet, a piezoelectric ceramic sheet, a copper wire, a mass block, a limiting rod and a shell. The utility model discloses utilize the piezoelectricity effect principle innovatively, convert the mechanical energy of structure into electrical potential energy, turn into heat energy through the resistance effect of copper wire then, dissipate the energy constantly, and rubber has certain power consumption effect as a viscoelastic material moreover, makes the damping effect of damper to the power transmission line good; the loss can be reduced when part of parts are replaced by adopting a multi-energy-consumption damping unit; the structure is simple, and the maintenance is easy; the damping parameters can be adjusted by adjusting the number of the energy-consuming damping units or adjusting the specification of the piezoelectric ceramic pieces and the quality of the mass blocks, so that the actual requirements can be better met.
Description
Technical Field
The utility model belongs to the technical field of power equipment and correlation, especially, relate to an antivibration hammer based on piezoelectricity power consumption.
Background
With the gradual increase of the power consumption requirements of many countries and regions in the world, the pole position of the high-voltage overhead line is higher and higher, the span is larger and larger, and the severe vibration of the wire under the action of wind load seriously threatens the safe operation of the power transmission line. The working conditions at the wire suspension are most unfavourable when the wire vibrates, since the wire is subject to fatigue failure due to periodic bending. The use of the damper can protect the wire and reduce metal fatigue and line aging.
The conventional damper mainly uses the principle of Tuned Mass Damper (TMD) to achieve the purpose of damping vibration of the wire. By TMD is meant a structure consisting of a mass, a spring and a damping system, the vibration frequency of which is in the vicinity of the main structure frequency. When wind load acts on the wire, TMD generates a resonance behavior opposite to the main body structure due to the inertial force of the vibrator and the restoring force of the spring. In the process, part of the energy of the wire vibration is converted into the kinetic energy of the TMD vibrator, part of the energy is converted into the elastic potential energy of the steel cable, and the rest part of the energy is dissipated through the TMD. However, the existing damper has a weak energy consumption mechanism and a very limited damping effect.
The utility model discloses creatively provides a damper based on piezoelectricity power consumption, utilizes the piezoelectricity effect principle, turns into the electric energy with the kinetic energy of TMD oscillator, improves power consumption efficiency greatly, reinforcing damping effect.
SUMMERY OF THE UTILITY MODEL
The technical scheme of the utility model:
a damper based on piezoelectric energy dissipation comprises a rubber sheet, a thin steel sheet, a piezoelectric ceramic sheet, a mass block, a limiting rod and a shell.
The whole device consists of a piezoelectric energy dissipation module, a steel cable and a wire clamp;
the limiting rod is a circular rod with an equal cross section, is rigidly connected with the shell and is arranged in a cavity formed by wrapping the shell;
the rectangular rubber sheet passes through the end part of the limiting rod and is tightly attached to the inner wall of the shell;
the rectangular thin steel sheet is tightly attached to the rubber sheet, and the thickness of the rectangular thin steel sheet is thinner than that of the rubber sheet;
the rectangular piezoelectric ceramic pieces are attached to the steel sheet, the thickness of the rectangular piezoelectric ceramic pieces is the same as that of the rubber sheet, and the positive electrode and the negative electrode of each piezoelectric ceramic piece are connected through copper wires to form an electric loop;
the cuboid mass block is positioned between the upper piezoelectric ceramic piece and the lower piezoelectric ceramic piece;
the positive electrode and the negative electrode of each piezoelectric ceramic piece are connected by more than 2 copper wires so as to ensure the redundancy and the reliability of the system;
the rubber sheet, the thin steel sheet, the piezoelectric ceramic sheet and the mass block are provided with circular holes at the centroids, the diameter of each hole is slightly larger than that of the limiting rod, and the limiting rod does not influence the free movement of the piezoelectric energy consumption unit along the length direction of the rod;
the mass block, the piezoelectric ceramic piece, the thin steel piece and the rubber piece form a piezoelectric energy consumption unit, and the number of the units is increased or decreased according to the vibration reduction requirement;
the utility model has the advantages that:
(1) the utility model discloses a damper based on piezoelectricity power consumption turns into piezoceramics's electric energy with wire vibration kinetic energy, turns into heat energy then, and the power consumption is efficient, and the damping is effectual.
(2) The utility model discloses a damper based on piezoelectricity power consumption, the sheet rubber can produce small deformation as a viscoelastic material, except protecting the piezoceramics piece, also can suitably consume energy.
(3) The utility model discloses a damper based on piezoelectricity power consumption can adjust the quantity of piezoelectricity power consumption unit, the specification of piezoceramics piece, the quality of quality piece according to actual need, realizes damping parameter's regulation.
(4) The utility model discloses a damper based on piezoelectricity power consumption, each power consumption unit mutual independence can reduce the loss when changing partial part.
(5) The utility model discloses a damper based on piezoelectricity power consumption has advantages such as simple structure, easy to maintain.
Drawings
Fig. 1 is a B-B sectional view of a damper based on piezoelectric energy dissipation according to an embodiment of the present invention;
fig. 2 is a sectional view taken along a line a-a of the damper according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating an installation of a damper based on piezoelectric energy dissipation according to an embodiment of the present invention;
in the figure: 1 rubber sheet, 2 thin steel sheets, 3 piezoelectric ceramic sheets, 4 mass blocks, 5 limiting rods and 6 shells.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to fig. 3, an embodiment of a damper based on piezoelectric energy dissipation according to the present invention includes: the device comprises a rubber sheet 1, a thin steel sheet 2, a piezoelectric ceramic sheet 3, a mass block 4, a limiting rod 5 and a shell 6.
In the embodiment, the piezoelectric energy consumption unit is composed of a rubber sheet 1, a thin steel sheet 2, a piezoelectric ceramic sheet 3 and a mass block 4, wherein circular holes with the diameter larger than that of the limiting rod 5 are formed in the centroid of each component of the energy consumption unit, and the energy consumption unit can freely move along the length direction of the rod;
when the lead vibrates, the piezoelectric energy consumption unit is sluggish in motion under the action of inertia due to large mass, so that the shell 6 extrudes the piezoelectric energy consumption unit;
the rubber sheet 1 is deformed under the extrusion of the shell 6, and partial energy is dissipated; the extrusion force of the shell 6 is transmitted to the thin steel sheet 2 through the rubber sheet 1, and the thin steel sheet 2 protects the piezoelectric ceramic piece 3 and simultaneously transmits the pressure to the piezoelectric ceramic piece 3 uniformly; the piezoelectric ceramic piece 3 is tightly attached to the thin steel sheet 2, positive and negative charges are respectively generated on the upper surface and the lower surface of the piezoelectric ceramic piece 3 under the action of pressure, a closed loop is formed by connecting copper wires of the positive electrode and the negative electrode, electric energy is converted into heat energy and is quickly dissipated, and a good vibration damping effect is achieved.
The utility model discloses a damper based on piezoelectricity power consumption, convert wire vibration kinetic energy into piezoceramics's electric energy, then convert into heat energy, the power consumption efficiency is high, and the damping is effectual; the rubber sheet as a viscoelastic material can generate micro deformation, and can properly consume energy besides protecting the piezoelectric ceramic sheet; the number of the piezoelectric energy consumption units, the specification of the piezoelectric ceramic pieces and the quality of the mass block can be adjusted according to actual needs, so that the adjustment of damping parameters is realized; each energy consumption unit is independent, and loss can be reduced when part of parts are replaced; the device has the advantages of simple structure, easy maintenance and the like.
Design the utility model discloses the time need pay attention to: firstly, the rubber sheet 1, the thin steel sheet 2, the piezoelectric ceramic sheet 3 and the mass block 4 are not contacted with the periphery of the inner wall of the shell; secondly, the rubber sheet 1, the thin steel sheet 2, the piezoelectric ceramic sheet 3 and the mass block 4 are all provided with a certain gap with the limiting rod, so that the limiting rod is prevented from influencing the motion of the piezoelectric energy consumption unit; thirdly, the shell and the limiting rod are made of stainless steel, so that the device is prevented from being rusted when contacting rainwater; fourthly, the upper surface and the lower surface of the piezoelectric ceramic sheet are connected by adopting a plurality of (more than 2) copper wires, so that the reliability and the redundancy of the system are ensured.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. The damper based on piezoelectric energy dissipation is characterized by comprising a rubber sheet (1), a thin steel sheet (2), a piezoelectric ceramic sheet (3), a mass block (4), a limiting rod (5) and a shell (6);
the limiting rod (5) is a round rod with equal cross section, two ends of the limiting rod are rigidly connected with the inner wall of the shell (6), and the limiting rod is arranged in a cavity formed by the shell in a wrapping mode;
the rectangular rubber sheet (1) passes through the end part of the limiting rod (5) and is tightly attached to the inner wall of the shell;
the rectangular thin steel sheet (2) is tightly attached to the rubber sheet (1), and the thickness of the rectangular thin steel sheet is thinner than that of the rubber sheet (1);
the rectangular piezoelectric ceramic pieces (3) are attached to the thin steel sheet (2), the thickness of the rectangular piezoelectric ceramic pieces is the same as that of the rubber sheet (1), and the positive electrode and the negative electrode of each piezoelectric ceramic piece (3) are connected through copper wires to form an electric circuit;
the cuboid mass block (4) is positioned between the upper piezoelectric ceramic piece (3) and the lower piezoelectric ceramic piece (3);
the positive electrode and the negative electrode of each piezoelectric ceramic piece (3) are connected by more than 2 copper wires so as to ensure the redundancy and the reliability of the system.
2. The damper based on piezoelectric energy dissipation according to claim 1, wherein the mass block (4), the piezoelectric ceramic sheet (3), the thin steel sheet (2) and the rubber sheet (1) form piezoelectric energy dissipation units, and the number of the units is increased or decreased according to the damping requirement.
3. The damper based on piezoelectric energy dissipation according to claim 2, wherein the rubber sheet (1), the thin steel sheet (2), the piezoelectric ceramic sheet (3) and the mass block (4) have circular holes at the centroid, the diameter of the holes is larger than that of the limiting rod (5), and the limiting rod (5) does not influence the free movement of the piezoelectric energy dissipation unit along the length direction of the rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920832078.8U CN209823365U (en) | 2019-06-04 | 2019-06-04 | Damper based on piezoelectric energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920832078.8U CN209823365U (en) | 2019-06-04 | 2019-06-04 | Damper based on piezoelectric energy consumption |
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| Publication Number | Publication Date |
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| CN209823365U true CN209823365U (en) | 2019-12-20 |
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| CN201920832078.8U Active CN209823365U (en) | 2019-06-04 | 2019-06-04 | Damper based on piezoelectric energy consumption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110198024A (en) * | 2019-06-04 | 2019-09-03 | 大连理工大学 | A kind of damper based on piezoelectricity energy consumption |
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2019
- 2019-06-04 CN CN201920832078.8U patent/CN209823365U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110198024A (en) * | 2019-06-04 | 2019-09-03 | 大连理工大学 | A kind of damper based on piezoelectricity energy consumption |
| CN110198024B (en) * | 2019-06-04 | 2024-02-06 | 大连理工大学 | Damper based on piezoelectricity power consumption |
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