CN103603912A - Piezoelectric driving type damping continuous adjustable shock absorber - Google Patents
Piezoelectric driving type damping continuous adjustable shock absorber Download PDFInfo
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- CN103603912A CN103603912A CN201310605581.7A CN201310605581A CN103603912A CN 103603912 A CN103603912 A CN 103603912A CN 201310605581 A CN201310605581 A CN 201310605581A CN 103603912 A CN103603912 A CN 103603912A
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- 238000013016 damping Methods 0.000 title claims abstract description 50
- 230000035939 shock Effects 0.000 title claims abstract description 24
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims description 56
- 239000012530 fluid Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract 3
- 238000000926 separation method Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention discloses a piezoelectric driving type damping continuously adjustable shock absorber which comprises an oil seal piece, a piston rod, a piston assembly, a cylinder barrel and a compression valve body, wherein the oil seal piece is inserted on the cylinder barrel, the compression valve body is arranged at the bottom end of the oil seal piece, the piston assembly is arranged at the bottom of the piston rod and is positioned in the oil seal piece, the shock absorber further comprises an oil separation valve block and a piezoelectric type damping regulator, the oil separation valve block is arranged between the inner wall of the cylinder barrel and the outer wall of the oil seal piece so as to separate shock absorption oil between the oil seal piece and the cylinder barrel into an upper cavity and a lower cavity, the piezoelectric type damping regulator is respectively communicated with the upper cavity and the lower cavity so as to be used for regulating the circulation amount of the shock absorption oil between the upper cavity and the lower cavity, a backflow hole is formed in the oil seal piece, one side of the backflow hole is communicated with a shock absorption oil. The invention can realize the damping adjustment of the compression stroke and the extension stroke of the shock absorber respectively, and can improve the response time of the shock absorber and the running smoothness of an automobile.
Description
Technical field
The present invention relates to the continuous adjustable shock absorber of a kind of driving type piezoelectric actuator damping, belong to vehicle component technical field.
Background technique
At present, the actuating device (comprising the spring of stiffness variable and the vibration damper of adaptive damping) of initiatively/half active electronic controlled suspension is the critical component that determines adjustable extent, system reliability and the stability of suspension rate and damping, therefore, be also the primary study object of electric suspension system.Czech Republic BRANO Co., Ltd has researched and developed the adaptive transmission control of air pressure control and has carried out real vehicle application; The Choon-Tae Lee of Korea S conducts in-depth research having the stroke induction type vibration damper (DSSA, Displacement-Sensitive Shock Absorber) of " soft ", " firmly " two kinds of damping state; The CDC(Continuous Damping Control of saxophone (SACHS) the company exploitation under Germany ZF group) damping continuous variable vibration damper, electromagnetism regulation and control direct proportaion valve has been installed in vibration damper, control the flow of hydraulic damper valve system, can realize at short notice the adjusting to absorber damping force; Just at the Benz Cars of volume production, the main vibration damper adopting, adopts 4 kinds of dampings of 2 groups of electromagnetic valve to regulate pattern, realizes the unique technique that stretching travel and compression stroke damping regulate respectively at present.
Summary of the invention
Technical problem to be solved by this invention is the defect that overcomes prior art, provide a kind of driving type piezoelectric actuator damping continuous adjustable shock absorber, it can be realized the compression stroke of vibration damper and stretching travel are carried out respectively to damping adjusting, and can improve the response time of vibration damper, improve the smoothness of automobile running.
The present invention solves the problems of the technologies described above the technological scheme of taking: the continuous adjustable shock absorber of a kind of driving type piezoelectric actuator damping, comprise oil seal, piston rod, piston assembly, cylinder barrel and compression valve body, oil seal is inserted on cylinder barrel, compression valve body is arranged on the bottom of oil seal, piston assembly is arranged on the bottom of piston rod and is positioned at oil seal, it is characterized in that: also comprise oil removal valve block and piezoelectricity type damper regulator, oil removal valve block is arranged between the inwall of cylinder barrel and the outer wall of oil seal to the damping oil between oil seal and cylinder barrel is divided into epicoele and cavity of resorption two-part, piezoelectricity type damper regulator is communicated with respectively epicoele and cavity of resorption for use in the discharge value that regulates the damping oil between epicoele and cavity of resorption, on described oil seal, have return port, the damping oil pocket that one side connection oil seal inner carrier assembly of return port and the top of oil seal surround, opposite side is communicated with epicoele.
A kind of piezoelectricity type damper regulator of structure is further provided, this piezoelectricity type damper regulator comprises valve body, return spring, spool, displacement amplifying mechanism and thereby it is created in the piezoelectric element that mechanically deformation on spool axial direction forms the axial Driving force that the party makes progress when when energising, piezoelectric element is flexibly connected with spool by displacement amplifying mechanism, the cavity of resorption fluid mouth that is provided with the epicoele fluid mouth being communicated with epicoele in valve body and is communicated with cavity of resorption, spool can axially movably be inserted in valve body and be arranged on epicoele fluid mouth and cavity of resorption fluid mouth be communicated with position so that the discharge value of the damping oil between adjusting epicoele and cavity of resorption, one end of return spring is fixedly shape, the other end with spool butt to provide spool to become rightabout thrust with the axial Driving force of piezoelectric element.
A kind of piezoelectric element of structure is further provided, this piezoelectric element has electrical plug-in unit and many groups are main by piezoceramics layer and be respectively formed at the positive electrode layer of piezoceramics layer both sides and the piezoelectric unit part that positive electrode layer forms, and positive electrode layer is connected with electrical plug-in unit after being electrically connected successively respectively with positive electrode layer.
A kind of displacement amplifying mechanism of structure is further provided, described displacement amplifying mechanism comprises at least two-stage displacement amplifying unit, every grade of displacement amplifying unit comprises displacement amplification lever and salient point, one end that lever is amplified in displacement is hinge-like so that its free end rotates around hinged place, described salient point is arranged on displacement and amplifies on the free end of lever, and this salient point and the displacement of adjacent displacement amplifying unit are amplified the position between salient point and hinged place on lever and are contacted, salient point and spool that the displacement of the displacement amplifying unit of described final stage is amplified on lever connect, the displacement that one side of described piezoelectric element is connected to first order displacement amplifying unit is amplified on lever on the position between salient point and hinged place.
Further define the number of displacement amplifying unit to meet the requirement that between piezoelectric element and spool, displacement is amplified, displacement amplifying unit is two, and one end that is hinge-like that lever is amplified in described displacement is all hinged on valve body.
Further, when piston assembly moves up and down, intraluminal fluid force feed volume changes, for this variation of balance, bottom in described cylinder barrel is provided with floating piston assembly, and this floating piston assembly is positioned at the below of compression valve body, and the downside of floating piston assembly is air cavity.
Further in order the position of the stretching of piston rod and compression to be limited to certain stroke and to cushion certain impact, on described piston rod, above piston assembly, be provided with snubber, this snubber comprises limit spring, movable spring seat and fixing spring seat, fixing spring seat is fixedly set in the bottom of piston rod, movable spring seat is sleeved on the top of piston rod movably, one end of limit spring is connected on fixing spring seat, and the other end is connected on movable spring seat.
Further in order to bear better certain impact, and when withstanding shocks, protect movable spring seat, the top of described movable spring seat is provided with back-up ring.
Adopted after technique scheme, when piezoelectric element is switched on namely piezoelectricity type damper regulator work by electrical plug-in unit, when applying different voltage, the amount of deformation that its piezoelectric element produces is also different, the displacement amount simultaneously piezoelectric element being produced passes to spool by displacement amplifying mechanism, spool is produced to be moved axially, thereby regulate the discharge value of damping oil between epicoele and cavity of resorption, thereby this vibration damper is carried out to damping adjusting, certainly in its drawing process and compression process, all can regulate separately, this piezoelectricity type damper regulator has high dynamic response performance, its speed of response is more better than solenoid valve, can improve the response time of vibration damper, improve the smoothness of automobile running, realizing its " soft " damping state regulates, when the riving conditions such as road conditions are better, the spool of piezoelectricity type damper regulator is in full close position, and epicoele and cavity of resorption are not identical, is still provided with compression valve body in this vibration damper, and damping when this compression valve body plays " firmly " damping state is controlled, existence due to the piston rod in this vibration damper, cause when piston assembly moves up and down, intraluminal fluid force feed volume changes, for this variation of balance, bottom at cylinder barrel is provided with air cavity, adopts floating piston assembly to separate between air cavity and hydraulic oil.
Accompanying drawing explanation
Fig. 1 is the structural representation of the continuous adjustable shock absorber of driving type piezoelectric actuator damping of the present invention;
Fig. 2 is the structural representation of piezoelectricity type damper regulator of the present invention.
Embodiment
For content of the present invention is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation below.
As shown in Figure 1, the continuous adjustable shock absorber of a kind of driving type piezoelectric actuator damping, comprise oil seal 2, piston rod 1, piston assembly 8, cylinder barrel 6 and compression valve body 10, oil seal 2 is inserted on cylinder barrel 6, compression valve body 10 is arranged on the bottom of oil seal 2, on compression valve body 10, be provided with the first seal ring 11, piston assembly 8 is arranged on the bottom of piston rod 1 and is positioned at oil seal 2, between oil seal 2 and piston assembly 8, by the second seal ring 28, seal, also comprise oil removal valve block 20 and piezoelectricity type damper regulator 21, oil removal valve block 20 is arranged between the inwall of cylinder barrel 6 and the outer wall of oil seal 2 to the damping oil between oil seal 2 and cylinder barrel 6 is divided into epicoele and cavity of resorption two-part, piezoelectricity type damper regulator 21 is communicated with respectively epicoele and cavity of resorption for use in the discharge value that regulates the damping oil between epicoele and cavity of resorption, on oil seal 2, have return port 19, the damping oil pocket that one side connection oil seal 2 inner carrier assemblies 8 of return port 19 and the top of oil seal 2 surround, opposite side is communicated with epicoele.
As shown in Figure 2, piezoelectricity type damper regulator 21 comprises valve body 22, return spring 14, spool 15, displacement amplifying mechanism and thereby it is created in the piezoelectric element 17 that mechanically deformation on spool 15 axial directions forms the axial Driving force that the party makes progress when when energising, piezoelectric element 17 is flexibly connected with spool 15 by displacement amplifying mechanism, the cavity of resorption fluid mouth 22-2 that is provided with the epicoele fluid mouth 22-1 being communicated with epicoele in valve body 22 and is communicated with cavity of resorption, spool 15 can axially movably be inserted in valve body 22 and be arranged on epicoele fluid mouth 22-1 and cavity of resorption fluid mouth 22-2 be communicated with position so that the discharge value of the damping oil between adjusting epicoele and cavity of resorption, one end of return spring 14 is fixedly shape, the other end with spool 15 butts to provide spool 15 to become rightabout thrust with the axial Driving force of piezoelectric element 17.
As shown in Figure 2, piezoelectric element 17 has electrical plug-in unit 18 and many groups are main by piezoceramics layer and be respectively formed at the positive electrode layer 17-1 of piezoceramics layer both sides and the piezoelectric unit part that positive electrode layer 17-2 forms, and positive electrode layer 17-1 is connected with electrical plug-in unit 18 after being electrically connected successively respectively with positive electrode layer 17-2.
As shown in Figure 2, displacement amplifying mechanism comprises at least two-stage displacement amplifying unit, every grade of displacement amplifying unit comprises displacement amplification lever 16 and salient point 23, one end that lever 16 is amplified in displacement is hinge-like so that its free end rotates around hinged place, salient point 23 is arranged on displacement and amplifies on the free end of lever 16, and this salient point 23 and the displacement of adjacent displacement amplifying unit are amplified the position between salient point 23 and hinged place on lever 16 and are contacted, the salient point 23 that the displacement of the displacement amplifying unit of final stage is amplified on lever 16 connects with spool 15, the displacement that one side of piezoelectric element 17 is connected to first order displacement amplifying unit is amplified on lever 16 on the position between salient point 23 and hinged place.Adopt lever principle to carry out the amplification of displacement.
As shown in Figure 2, displacement amplifying unit is two, and one end that is hinge-like that lever 16 is amplified in displacement is all hinged on valve body 22.
As shown in Figure 1, the bottom in cylinder barrel 6 is provided with floating piston assembly 12, and between the two by the 3rd seal ring 13 sealing, and this floating piston assembly 12 is positioned at the below of compression valve body 10, and the downside of floating piston assembly 12 is air cavity 12-1.Existence due to the piston rod 1 in this vibration damper, cause when piston assembly 8 moves up and down, intraluminal fluid force feed volume changes, for this variation of balance, in the bottom of cylinder barrel 6, be provided with air cavity 12-1, between air cavity 12-1 and hydraulic oil, adopt floating piston assembly 12 to separate.
As shown in Figure 1, on piston rod 1, above piston assembly 8, be provided with snubber, this snubber comprises limit spring 5, movable spring seat 4 and fixing spring seat 7, fixing spring seat 7 is fixedly set in the bottom of piston rod 1, movable spring seat 4 is sleeved on the top of piston rod 1 movably, one end of limit spring 5 is connected on fixing spring seat 7, and the other end is connected on movable spring seat 4.
As shown in Figure 1, the top of movable spring seat 4 is provided with back-up ring 3.Back-up ring 3 can be made by rubber material.
Working principle of the present invention is as follows:
When piezoelectric element 17 is switched on namely piezoelectricity type damper regulator 21 work by electrical plug-in unit 18, when applying different voltage, the amount of deformation that its piezoelectric element 17 produces is also different, the displacement amount simultaneously piezoelectric element 17 being produced passes to spool 15 by displacement amplifying mechanism, spool 15 is produced to be moved axially, thereby regulate the discharge value of damping oil between epicoele and cavity of resorption, thereby this vibration damper is carried out to damping adjusting, certainly in its drawing process and compression process, all can regulate separately, this piezoelectricity type damper regulator has high dynamic response performance, its speed of response is more better than solenoid valve, can improve the response time of vibration damper, improve the smoothness of automobile running, realizing its " soft " damping state regulates, when the riving conditions such as road conditions are better, the spool 15 of piezoelectricity type damper regulator 21 is in full close position, and epicoele and cavity of resorption do not communicate, and is still provided with compression valve body 10 in this vibration damper, and damping when this compression valve body 10 plays " firmly " damping state is controlled.
Above-described specific embodiment; technical problem, technological scheme and beneficial effect that the present invention is solved further describe; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. the continuous adjustable shock absorber of driving type piezoelectric actuator damping, comprise oil seal (2), piston rod (1), piston assembly (8), cylinder barrel (6) and compression valve body (10), oil seal (2) is inserted on cylinder barrel (6), compression valve body (10) is arranged on the bottom of oil seal (2), piston assembly (8) is arranged on the bottom of piston rod (1) and is positioned at oil seal (2), it is characterized in that: also comprise oil removal valve block (20) and piezoelectricity type damper regulator (21), oil removal valve block (20) is arranged between the inwall of cylinder barrel (6) and the outer wall of oil seal (2) to the damping oil between oil seal (2) and cylinder barrel (6) is divided into epicoele and cavity of resorption two-part, piezoelectricity type damper regulator (21) is communicated with respectively epicoele and cavity of resorption for use in the discharge value that regulates the damping oil between epicoele and cavity of resorption, on described oil seal (2), have return port (19), the damping oil pocket that one side connection oil seal (2) inner carrier assembly (8) of return port (19) and the top of oil seal (2) surround, opposite side is communicated with epicoele.
2. the continuous adjustable shock absorber of driving type piezoelectric actuator damping according to claim 1, it is characterized in that: described piezoelectricity type damper regulator (21) comprises valve body (22), return spring (14), spool (15), displacement amplifying mechanism and when when energising its be created in spool (15) thus the mechanically deformation on axial direction forms the piezoelectric element (17) of the axial Driving force that the party makes progress, piezoelectric element (17) is flexibly connected with spool (15) by displacement amplifying mechanism, in valve body (22), be provided with the epicoele fluid mouth (22-1) being communicated with epicoele and the cavity of resorption fluid mouth (22-2) being communicated with cavity of resorption, spool (15) can axially movably be inserted in valve body (22) and be arranged on epicoele fluid mouth (22-1) and cavity of resorption fluid mouth (22-2) be communicated with position so that the discharge value of the damping oil between adjusting epicoele and cavity of resorption, one end of return spring (14) is fixedly shape, the other end with spool (15) butt to provide spool (15) to become rightabout thrust with the axial Driving force of piezoelectric element (17).
3. the continuous adjustable shock absorber of driving type piezoelectric actuator damping according to claim 2, it is characterized in that: described piezoelectric element (17) has electrical plug-in unit (18) and many groups mainly by piezoceramics layer and be respectively formed at the positive electrode layer (17-1) of piezoceramics layer both sides and the piezoelectric unit part that positive electrode layer (17-2) forms, and positive electrode layer (17-1) and positive electrode layer (17-2) are electrically connected successively respectively rear and electrical plug-in unit (18) and are connected.
4. the continuous adjustable shock absorber of driving type piezoelectric actuator damping according to claim 2, it is characterized in that: described displacement amplifying mechanism comprises at least two-stage displacement amplifying unit, every grade of displacement amplifying unit comprises displacement amplification lever (16) and salient point (23), one end that lever (16) is amplified in displacement is hinge-like so that its free end rotates around hinged place, described salient point (23) is arranged on displacement and amplifies on the free end of lever (16), and this salient point (23) contacts with the position that the displacement of adjacent displacement amplifying unit is amplified between the upper salient point (23) of lever (16) and hinged place, the salient point (23) that the displacement of the displacement amplifying unit of described final stage is amplified on lever (16) connects with spool (15), one side of described piezoelectric element (17) is connected to the displacement of first order displacement amplifying unit and amplifies on the position between the upper salient point (23) of lever (16) and hinged place.
5. the continuous adjustable shock absorber of driving type piezoelectric actuator damping according to claim 4, is characterized in that: described displacement amplifying unit is two, and one end that is hinge-like that lever (16) is amplified in described displacement is all hinged on valve body (22).
6. the continuous adjustable shock absorber of driving type piezoelectric actuator damping according to claim 1 and 2, it is characterized in that: the bottom in described cylinder barrel (6) is provided with floating piston assembly (12), and this floating piston assembly (12) is positioned at the below of compression valve body (10), and the downside of floating piston assembly (12) is air cavity (12-1).
7. the continuous adjustable shock absorber of driving type piezoelectric actuator damping according to claim 1 and 2, it is characterized in that: described piston rod (1) is upper is provided with snubber in the top of piston assembly (8), this snubber comprises limit spring (5), movable spring seat (4) and fixing spring seat (7), fixing spring seat (7) is fixedly set in the bottom of piston rod (1), movable spring seat (4) is sleeved on the top of piston rod (1) movably, it is upper that one end of limit spring (5) is connected to fixing spring seat (7), and the other end is connected on movable spring seat (4).
8. the continuous adjustable shock absorber of driving type piezoelectric actuator damping according to claim 7, is characterized in that: the top of described movable spring seat (4) is provided with back-up ring (3).
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| CN201310605581.7A CN103603912B (en) | 2013-11-26 | 2013-11-26 | Piezoelectric driving type damping continuous adjustable shock absorber |
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| CN201310605581.7A CN103603912B (en) | 2013-11-26 | 2013-11-26 | Piezoelectric driving type damping continuous adjustable shock absorber |
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| CN103603912B CN103603912B (en) | 2015-08-12 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673760A (en) * | 2016-03-07 | 2016-06-15 | 江苏大学 | Piezoelectric self-sensing based adjustable damper |
| CN106090111A (en) * | 2016-06-21 | 2016-11-09 | 江苏大学 | A kind of adaptive damping hydraulic vibration damper used for vehicle of band height adjusting system |
| CN106678249A (en) * | 2016-12-20 | 2017-05-17 | 江苏大学 | Bottom valve assembly for adjustable damping vibration absorber |
| CN106838104A (en) * | 2015-12-07 | 2017-06-13 | 通用汽车环球科技运作有限责任公司 | Use the variable damping system of piezo-electric device |
| CN106981593A (en) * | 2017-05-10 | 2017-07-25 | 江苏理工学院 | A kind of hybrid vehicle damping by friction intelligent battery box system |
| CN107146864A (en) * | 2017-05-10 | 2017-09-08 | 江苏理工学院 | A kind of hybrid vehicle hydraulic shock-absorption intelligent battery box system |
| CN107237852A (en) * | 2017-08-08 | 2017-10-10 | 浙江中兴减震器制造有限公司 | A kind of damper |
| CN112124013A (en) * | 2020-08-25 | 2020-12-25 | 江苏理工学院 | Intelligent tire testing system and testing method based on piezoelectric power generation material |
| CN112413031A (en) * | 2020-11-03 | 2021-02-26 | 南京航空航天大学 | Electric control damping adjustable shock absorber and adjusting method thereof |
| CN113195932A (en) * | 2018-12-28 | 2021-07-30 | 天纳克汽车经营有限公司 | Damper with single external control valve |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838104A (en) * | 2015-12-07 | 2017-06-13 | 通用汽车环球科技运作有限责任公司 | Use the variable damping system of piezo-electric device |
| CN105673760A (en) * | 2016-03-07 | 2016-06-15 | 江苏大学 | Piezoelectric self-sensing based adjustable damper |
| CN106090111A (en) * | 2016-06-21 | 2016-11-09 | 江苏大学 | A kind of adaptive damping hydraulic vibration damper used for vehicle of band height adjusting system |
| CN106678249A (en) * | 2016-12-20 | 2017-05-17 | 江苏大学 | Bottom valve assembly for adjustable damping vibration absorber |
| CN106981593A (en) * | 2017-05-10 | 2017-07-25 | 江苏理工学院 | A kind of hybrid vehicle damping by friction intelligent battery box system |
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| CN113195932A (en) * | 2018-12-28 | 2021-07-30 | 天纳克汽车经营有限公司 | Damper with single external control valve |
| CN113195932B (en) * | 2018-12-28 | 2023-08-29 | 天纳克汽车经营有限公司 | Damper with single external control valve |
| CN112124013A (en) * | 2020-08-25 | 2020-12-25 | 江苏理工学院 | Intelligent tire testing system and testing method based on piezoelectric power generation material |
| CN112413031A (en) * | 2020-11-03 | 2021-02-26 | 南京航空航天大学 | Electric control damping adjustable shock absorber and adjusting method thereof |
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| Publication number | Publication date |
|---|---|
| CN103603912B (en) | 2015-08-12 |
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