CN110829892A - Piezoelectric energy-absorbing vibration-damping device - Google Patents
Piezoelectric energy-absorbing vibration-damping device Download PDFInfo
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- CN110829892A CN110829892A CN201911106839.2A CN201911106839A CN110829892A CN 110829892 A CN110829892 A CN 110829892A CN 201911106839 A CN201911106839 A CN 201911106839A CN 110829892 A CN110829892 A CN 110829892A
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- 238000013016 damping Methods 0.000 title claims abstract description 19
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
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- Vibration Prevention Devices (AREA)
Abstract
The invention relates to the technical field of vibration power generation, and discloses a piezoelectric energy-absorbing and vibration-damping device which is characterized by comprising a shell and an energy-absorbing assembly, wherein the energy-absorbing assembly comprises a stress piece and at least one energy-absorbing piece, the stress piece comprises a stress rod, one end of the stress rod is connected to the shell in a sliding mode, each energy-absorbing piece comprises an elastic sheet and at least one piezoelectric sheet, one side of each elastic sheet is clamped to the shell, the other side of each elastic sheet is clamped to the stress rod, and each piezoelectric sheet is attached to the corresponding elastic sheet. The vibration damping device can effectively convert vibration energy into electric energy so as to play a role in vibration damping.
Description
Technical Field
The invention relates to the technical field of vibration power generation, in particular to a piezoelectric energy-absorbing vibration-damping device.
Background
Buildings, automobiles, airplanes, large mechanical equipment and the like can generate vibration in the working process, and the vibration cannot be converted into usable electric energy due to the lack of a corresponding energy-absorbing and vibration-damping device at present.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a piezoelectric energy-absorbing vibration-damping device, which solves the technical problem that the vibration energy generated by equipment cannot be effectively recovered in the prior art.
In order to achieve the above technical object, a technical solution of the present invention provides a piezoelectric energy-absorbing vibration damping device, including:
a housing;
the energy-absorbing assembly comprises a stress piece and at least one energy-absorbing piece, wherein the stress piece comprises a stress rod, one end of the stress rod is slidably connected with the shell, each energy-absorbing piece comprises an elastic sheet and at least one piezoelectric sheet, one side of the elastic sheet is clamped with the shell, the other side of the elastic sheet is clamped with the stress rod, and the piezoelectric sheet is attached to the elastic sheet.
Compared with the prior art, the invention has the beneficial effects that: the invention is arranged on equipment which continuously vibrates, the stress rod is connected with the equipment, the equipment vibrates during working, the vibration is transmitted to the stress rod, the stress rod moves relative to the shell, so that the elastic sheet deforms, the piezoelectric sheet generates electric energy after deformation, the mechanical energy wasted by the equipment vibration is converted into the electric energy, and the energy is recycled.
Drawings
FIG. 1 is a three-dimensional schematic of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged partial schematic view at B of FIG. 3;
FIG. 5 is an enlarged partial schematic view at C of FIG. 3;
FIG. 6 is a three-dimensional schematic view of an energy absorber assembly and spring of the present invention;
FIG. 7 is a schematic structural view of an energy absorber assembly of the present invention;
FIG. 8 is a three-dimensional schematic view of a force-receiving member and spring of the present invention;
FIG. 9 is a three-dimensional schematic view of an energy absorber of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a piezoelectric energy-absorbing vibration-damping device, which comprises a shell 1 and an energy-absorbing assembly 2, wherein the shell 1 is hollow, preferably, the shell 1 comprises a shell body 11 and two end covers 12, the shell body 11 is a hollow cylinder body which is hollow inside and has two open ends, the end covers 12 are detachably connected to two ends of the shell body 11, and the end covers 12 are coaxially provided with two first through holes.
Further preferably, the housing 1 further comprises a plurality of screws 13, and the screws 13 are rotatably inserted through the end cap 12 in the radial direction of the housing 11 and are screwed to the housing 11.
Further preferably, an annular protrusion 3 is formed on the inner wall of the middle portion of the housing 11 and protrudes outwards, and the annular protrusion 3 and the housing 11 are integrally formed and coaxially arranged.
The energy absorption assembly 2 comprises a stress element 21 and at least one energy absorption element 22, wherein the stress element 21 comprises a stress rod 211, and one end of the stress rod 211 is slidably connected with the shell 1.
Preferably, one end of the stress rod 211 can slidably penetrate through the end cover 12 and penetrate into the housing 11 through the first through hole, the stress member 21 further includes a sliding bearing 212, the sliding bearing 212 and the end cover 12 are arranged in a one-to-one correspondence manner, an inner ring of the sliding bearing 212 is coaxial and fixedly sleeved on the stress rod 211, and an outer ring of the sliding bearing is connected to the inner wall of the first through hole.
By arranging the sliding bearing 212, the sliding bearing 212 is coaxially connected to the end cover 12 and coaxially sleeved on the stress rod 211, so that the stress rod 211 can only move axially relative to the shell 11, and can convert vibration in other directions into vibration moving axially relative to the shell 11, so that the elastic sheet is more effectively deformed along the axial direction, and more vibration energy can be converted into electric energy.
Preferably, each force-bearing member 21 further includes a fixing block 213 and a fixing sleeve 214, the fixing block 213 and the fixing sleeve 214 are respectively disposed at two ends of the force-bearing rod 211, the fixing block 213 is connected to an end of one end of the force-bearing rod 211, and the fixing sleeve 214 is coaxially and detachably connected to the other end of the force-bearing rod 211.
Further preferably, the outer wall of the stress rod 211 is provided with an external thread along the axial direction, the inner wall of the fixing sleeve 214 is provided with an internal thread, the fixing sleeve 214 is in threaded connection with the stress rod 211, and the fixing sleeve 214 is a nut.
Each energy absorbing member 22 comprises an elastic sheet 221 and at least one piezoelectric sheet 222, wherein one side of the elastic sheet 221 is clamped to the shell 1, the other side of the elastic sheet is clamped to the stress rod 211, the piezoelectric sheet 222 is attached to the elastic sheet 221, the piezoelectric sheet 222 is made of a material which deforms to generate electric energy, preferably, the piezoelectric sheet 222 is a PZT piezoelectric ceramic sheet, and the piezoelectric sheet 222 is bonded to the elastic sheet 221 through glue.
Preferably, the number of the energy absorbing members 22 is multiple, the multiple energy absorbing members 22 are uniformly distributed along the axial direction of the stress rod 211, the multiple energy absorbing members 22 are arranged between the fixed block 213 and the fixing sleeve 214, and the elastic pieces 221 at the two ends of the stress rod 211 are respectively abutted against the fixed block 213 and the fixing sleeve 214; each energy absorbing assembly 2 further comprises a plurality of first sleeves 23, the stress rod 211 is sleeved with the first sleeves 23, the first sleeves 23 are arranged between the elastic pieces 221, two ends of each first sleeve 23 abut against two adjacent elastic pieces 221 respectively, and the first sleeves 23 and the elastic pieces 221 are sequentially and alternately arranged along the axial direction of the stress rod 211.
Preferably, the number of the energy absorption components 2 is two, and the two energy absorption components 2 are symmetrically arranged at two ends of the annular bulge 3; each energy absorbing assembly 2 further comprises a plurality of second sleeves 24, the second sleeves 24 are arranged in one-to-one correspondence with the elastic sheets 221, the second sleeves 24 and the elastic sheets 221 are sequentially and alternately arranged along the axial direction of the stress rod 211, two ends of the elastic sheet 221 located at the head of the energy absorbing assembly 2 are respectively abutted to the annular protrusion 3 and the second sleeves 24, and the second sleeves 24 located at the tail of the energy absorbing assembly 2 are respectively abutted to the end cover 12 and the elastic sheets 221.
It is further preferred that the inner diameter of the second sleeve 24 is larger than the outer diameter of the piezo sheet 222.
The outer ring of the elastic piece 221 can be effectively fixed by the second sleeve 24 and the annular protrusion 3.
Preferably, the elastic piece 221 is disc-shaped, a first through hole is coaxially formed in the elastic piece 221, and the elastic piece 221 is coaxially sleeved on the stress rod 211 through the first through hole.
Preferably, the piezoelectric plate 222 is disc-shaped, a second through hole is coaxially formed in the piezoelectric plate 222, and the piezoelectric plate 222 is sleeved on the stress rod 211 through the second through hole and coaxially connected to the corresponding elastic plate 221.
Preferably, the piezoelectric energy-absorbing vibration-damping device further comprises a spring 4, the spring 4 is arranged between the two energy-absorbing components 2, two ends of the spring 4 are respectively abutted against the elastic sheets 221 of the two energy-absorbing components 2, the outer diameter of the spring 4 is smaller than the diameter of the second through hole, and two ends of the spring 4 are respectively sleeved on the fixed blocks 213 of the two energy-absorbing components 2; and the spring 4 will vibrate repeatedly after being compressed and weaken continuously, so that the piezoelectric sheet 222 deforms continuously to generate electric energy.
The specific working process of the invention is as follows: fix stress rod 211 on the equipment of vibration, equipment vibration drives stress rod 211 vibration, stress rod 211 is relative casing 11 is axial motion, stress rod 211 drives fixed block 213, fixed cover 214, first sleeve 23, at this moment, fixed block 213, fixed cover 214, the center that first sleeve 23 promoted flexure strip 221 takes place to deform, flexure strip 221 drives piezoelectric patches 222 and takes place to deform, piezoelectric patches 222 deforms and produces the electric charge, derive and collect the electric energy through the wire, mechanical vibration energy has been realized and has been converted into the electric energy, piezoelectricity energy-absorbing vibration damper absorbs the vibration energy, be favorable to the damping to equipment.
Because the number of the energy-absorbing assemblies 2 is two, the stress rod 211 connected with the equipment transmits vibration to the elastic sheet 221, the fixed block 213, the fixed sleeve 214, the first sleeve 23 and the stress rod 211 of the other energy-absorbing assembly 2 through the spring 4, the spring 4 pushes the elastic sheet 221 to deform, the elastic sheet 221 pushes the first sleeve 23 to move, the first sleeve 23 pushes the elastic sheet 221 above to deform, the elastic sheet 221 moves upwards sequentially until the elastic sheet 221 abuts against the fixed sleeve 214, the fixed sleeve 214 drives the stress rod 211 to move axially relative to the shell 11, the movable distance of the stress rod 211 relative to the shell 11 is limited due to the limitation of the end cover 12 and the spring 4, the movable distance of the elastic sheet 221 relative to the stress rod 211 is limited, namely the deformation degree of the elastic sheet 221 is limited, the damage of the elastic sheet 221 caused by the overlarge deformation of the elastic sheet 221 can be prevented, and the spring 4 is arranged between the two energy-absorbing assemblies 2, the force bars 211 of both energy absorber assemblies 2 are prevented from impacting together.
Through setting up fixed block 213, fixed cover 214, first sleeve 23, second sleeve 24, annular protrusion 3 can be fixed in casing 11 with a plurality of elastic pieces 221 interval, when needing to dismantle, take off fixed cover 214, first sleeve 23, second sleeve 24 the back, can take out elastic piece 221 from casing 11 in, convenient to detach and installation.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A piezoelectric energy-absorbing vibration damping device, comprising:
a housing;
the energy-absorbing assembly comprises a stress piece and at least one energy-absorbing piece, wherein the stress piece comprises a stress rod, one end of the stress rod is slidably connected with the shell, each energy-absorbing piece comprises an elastic sheet and at least one piezoelectric sheet, one side of the elastic sheet is clamped with the shell, the other side of the elastic sheet is clamped with the stress rod, and the piezoelectric sheet is attached to the elastic sheet.
2. The device according to claim 1, wherein the number of the energy absorbing members is plural, and the plural energy absorbing members are uniformly distributed along the axial direction of the force receiving bar.
3. The piezoelectric energy-absorbing vibration absorber according to claim 2, wherein each energy-absorbing assembly further comprises a plurality of first sleeves, the first sleeves are sleeved on the stress rod and arranged between the elastic pieces, two ends of each first sleeve are respectively abutted against two adjacent elastic pieces, and the first sleeves and the elastic pieces are sequentially and alternately arranged along the axial direction of the stress rod.
4. The piezoelectric energy-absorbing vibration damping device according to claim 2, wherein each of said stress members further comprises a fixing block and a fixing sleeve, said fixing block and said fixing sleeve are respectively disposed at two ends of said stress rod, said fixing block is connected to an end of one end of said stress rod, and said fixing sleeve is coaxially and detachably connected to the other end of said stress rod; a plurality of the energy absorbing parts are arranged between the fixed block and the fixed sleeve and are positioned at the two ends of the stress rod, and the elastic pieces are respectively abutted against the fixed block and the fixed sleeve.
5. The piezoelectric energy-absorbing vibration-damping device according to claim 2, wherein the housing comprises a shell and two end covers, the shell is a hollow cylinder body which is hollow inside and is open at two ends, the end covers are detachably connected to two ends of the shell, and the end covers are coaxially provided with two first through holes; one end of the stress rod can slide through the end cover through the first through hole and penetrate into the shell.
6. The piezoelectric energy-absorbing vibration-damping device according to claim 5, wherein an annular bulge is formed by outwards bulging the inner wall of the middle part of the shell, the number of the energy-absorbing components is two, and the two energy-absorbing components are symmetrically arranged at two ends of the annular bulge; the energy-absorbing assembly further comprises a plurality of second sleeves, the second sleeves are arranged in a one-to-one correspondence mode with the elastic pieces, the second sleeves and the elastic pieces are sequentially and alternately arranged along the axial direction of the stress rod, the first sleeves are located at the head of the energy-absorbing assembly, two ends of the elastic pieces are respectively abutted to the annular protrusions and the second sleeves, and the second sleeves are located at the tail of the energy-absorbing assembly and are respectively abutted to the end covers and the elastic pieces.
7. The piezoelectric energy-absorbing vibration damping device according to claim 6, wherein the force-receiving member further comprises sliding bearings, the sliding bearings are arranged in one-to-one correspondence with the end caps, inner rings of the sliding bearings are coaxial and fixedly sleeved on the force-receiving rod, and outer rings of the sliding bearings are connected to the inner wall of the first through hole.
8. The device according to claim 6, further comprising a spring disposed between the two energy-absorbing components, wherein two ends of the spring abut against the elastic pieces of the two energy-absorbing components, respectively.
9. The piezoelectric energy-absorbing and vibration-damping device according to any one of claims 1 to 8, wherein the elastic sheet is disc-shaped, a first through hole is coaxially formed in the elastic sheet, and the elastic sheet is coaxially sleeved on the stress rod through the first through hole.
10. The piezoelectric energy-absorbing vibration damping device according to claim 9, wherein the piezoelectric plate is disc-shaped, a second through hole is coaxially formed in the piezoelectric plate, and the piezoelectric plate is sleeved on the stress rod through the second through hole and coaxially connected to the corresponding elastic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106839.2A CN110829892A (en) | 2019-11-13 | 2019-11-13 | Piezoelectric energy-absorbing vibration-damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106839.2A CN110829892A (en) | 2019-11-13 | 2019-11-13 | Piezoelectric energy-absorbing vibration-damping device |
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| Publication Number | Publication Date |
|---|---|
| CN110829892A true CN110829892A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911106839.2A Pending CN110829892A (en) | 2019-11-13 | 2019-11-13 | Piezoelectric energy-absorbing vibration-damping device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769758A (en) * | 2020-06-05 | 2020-10-13 | 长江大学 | Piezoelectric damping device |
| CN111779789A (en) * | 2020-06-05 | 2020-10-16 | 长江大学 | Piezoelectric energy-absorbing damper |
| CN111917332A (en) * | 2020-08-24 | 2020-11-10 | 上海大学 | Compound vibration energy collector of many piezoelectric beams clan |
-
2019
- 2019-11-13 CN CN201911106839.2A patent/CN110829892A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769758A (en) * | 2020-06-05 | 2020-10-13 | 长江大学 | Piezoelectric damping device |
| CN111779789A (en) * | 2020-06-05 | 2020-10-16 | 长江大学 | Piezoelectric energy-absorbing damper |
| CN111779789B (en) * | 2020-06-05 | 2022-02-18 | 长江大学 | Piezoelectric energy-absorbing damper |
| CN111769758B (en) * | 2020-06-05 | 2023-09-29 | 长江大学 | Piezoelectric damping device |
| CN111917332A (en) * | 2020-08-24 | 2020-11-10 | 上海大学 | Compound vibration energy collector of many piezoelectric beams clan |
| CN111917332B (en) * | 2020-08-24 | 2021-06-22 | 上海大学 | Compound vibration energy collector of many piezoelectric beams clan |
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