CN104455193A - Piezoelectric type self-adaptive adjustment damping vibration absorber - Google Patents
Piezoelectric type self-adaptive adjustment damping vibration absorber Download PDFInfo
- Publication number
- CN104455193A CN104455193A CN201410507596.4A CN201410507596A CN104455193A CN 104455193 A CN104455193 A CN 104455193A CN 201410507596 A CN201410507596 A CN 201410507596A CN 104455193 A CN104455193 A CN 104455193A
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- Prior art keywords
- piston
- telescopic block
- shock absorber
- block
- cylindrical shell
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a piezoelectric type self-adaptive adjustment damping vibration absorber. The problem that an existing vibration absorber is relatively poor in self adaptability is solved. According to the technical scheme, the piezoelectric type self-adaptive adjustment damping vibration absorber comprises a cylinder and a piston, the inner end of a rod is connected with the piston, and the outer end of the rod extends out of the cylinder. The piezoelectric type self-adaptive adjustment damping vibration absorber is characterized in that one of the piston and the cylinder is a movable part, the other one of the piston and the cylinder is a fixed part, and the movable part is used for performing axial movement on the fixed part; a piezoelectric ceramic type acceleration sensor is arranged on the movable part, a piezoelectric ceramic type stretchable block is movably arranged on the fixed part in the axial direction, a spring is arranged between the stretchable block and the fixed part, and the stretchable block is supported on the movable part; the acceleration sensor is connected with the stretchable block through a wire.
Description
Technical field
The present invention relates to a kind of vibration damper, particularly relate to a kind of piezoelectricity type Automatic adjusument damping shock absorber.
Background technique
Vibration damper is applied on locomotive, for providing damping effect for the locomotive in movement process, to improve the travelling comfort of driver, existing vibration damper great majority are cylinder formula structure, namely piston is set in cylinder, utilize piston axial motion in the cylinder being full of hydraulic oil, and utilize the damping force produced between hydraulic oil and valve block to reach the object of vibration damping.This vibration damper does not change into useful work jolting in motor sport process, but this jolt directly be reflected between hydraulic oil and valve block interaction on, in the course of time, hydraulic pressure oil viscosity can change, and also easily there is fatigue damage in valve block, this can have influence on the task performance of vibration damper, also can bring impact to the working life of vibration damper.
Chinese invention patent application (application number: disclose a kind of electric vibration damper 201080045425.4), for carrying out vibration damping to the relative movement between first and second quality, comprise the generator driven by mass motion, wherein, described generator is integrated in transmission device, wherein, the first transmission components forming stator is rotated by described mass motion, thus, the second transmission components forming rotor rotates, described second transmission components is coupled through speed change directly or indirectly with described first transmission components, wherein, or described first or the mechanism that is provided with on described second transmission components for generation of magnetic field.
The structure of this generating shock absorber is comparatively complicated, inconvenience processing and installation.In the application process of reality, also need to be applied to hydraulic oil.
Summary of the invention
The technical issues that need to address of the present invention are: provide a kind of piezoelectricity type Automatic adjusument damping shock absorber, the vibration damping self adaption of this vibration damper is good, nor need to use hydraulic oil.
For solveing the technical problem, the technical solution used in the present invention: a kind of piezoelectricity type Automatic adjusument damping shock absorber, comprise cylindrical shell and piston, the inner and the piston of the body of rod are connected, and the outer end of the body of rod reaches outside cylindrical shell, it is characterized in that, piston and cylindrical shell two parts, one of them parts is dynamic component, and another parts are limiting-members, and dynamic component is for axial motion in limiting-members; Dynamic component is provided with piezoelectric ceramic type acceleration sensor, limiting-members is provided with piezoelectric ceramic type telescopic block axially and movably, is provided with spring between telescopic block and limiting-members, telescopic block is bearing on dynamic component; Be connected by wire between acceleration sensor with telescopic block.Vibration damper is assemblied in after on automobile, and being generally that joining parts are limiting-members with chassis, is dynamic component with the joining parts of vehicle body.Described dynamic component and limiting-members are only two concepts comparatively speaking, and show to have between piston and cylindrical shell to move to axial, do not refer to when driving, limiting-members necessarily would not be moved.The corresponding part of piezoelectric ceramic type, refer to that in fact namely these parts are that piezoelectric constant is made, piezoelectric constant can produce different electric charge at the two ends of Impact direction respectively when pressurized, and when applying electric current, then can extend, these two processes are reciprocal.In the application process of reality, dynamic component is under the effect of vehicle body, meeting action in limiting-members, this action is mainly reflected in vehicle body suddenly in sinking watching, acceleration sensor can produce electric charge under acceleration, this electric charge conducts to telescopic block place by wire, and produce electric field at telescopic block place, under the effect of this electric field, telescopic block is extended on the basis of original size, thus oppresses spring, makes the elastic acting force of spring to dynamic component large, thus the speed slowing down vehicle body decline can be contributed to, reach the object of vibration damping.When vehicle body rebounds, due to vehicle body, this is slowed down in time sinking, vehicle body bounce-back is comparatively slow, the effect that acceleration sensor plays is little, few to telescopic block supply electric charge, do not have even, the field intensity of the electric field formed at telescopic block place diminishes, or disappear completely, during telescopic block volume becomes, can slow down the compressive state of spring after telescopic block smaller volume, the elastic force that spring is applied vehicle body by dynamic component is little, speed when this also can cause vehicle body to rise is mild, reaches the object of vibration damping.
As preferably, described dynamic component is cylindrical shell, and limiting-members is piston.Limiting-members is piston, means that telescopic block is assemblied in piston position place, and this makes to be convenient in cylindrical shell, assemble corresponding parts, and the structure stability between each parts is good.
As preferably, described cylindrical shell comprises the inner core and urceolus that connect together coaxially, and inertial mass is between inner core and urceolus, and inertial mass is fixed on the outer circumferential face of inner core, and acceleration sensor is arranged in the cavity volume of inertial mass.The setting of mass block is used in cylindrical shell, carrying out axially locating to acceleration sensor, and acceleration sensor, when cylindrical shell action, under the restriction of inertial mass, that is to say that inertial mass is oppressed acceleration sensor, and acceleration sensing can be made to produce electric charge.
As preferably, be provided with coupling block at the inner place of cylindrical shell, the inner of inner core is fixed by socket on the projection on coupling block; Shaft section is in "] " end shield of shape is fixed on urceolus the inner place, and coupling block is bearing on the inner bottom surface of end shield.By arranging end shield and coupling block, can adapt to the fixing requirement of the vibration damper cylindrical shell of double-barrel structure well, structure is simple, is convenient to be formed firmly tube structure.
As preferably, be provided with bearing bolt at coupling block towards the home position place of piston one end face, telescopic block is socketed on stationary axle with gap, and the two ends of stationary axle reach the outside of telescopic block respectively, and the inner of stationary axle is used for holding mutually with bearing bolt.By the transmission holding realizable force of bearing bolt and stationary axle, effectively can improve the stability that between each corresponding part, power is transmitted, and bearing bolt and the material characteristic of stationary axle itself can be utilized to make both hold good stability when contacting mutually, larger impact force can not be brought to coupling block and piston.
As preferably, the end face of piston towards telescopic block is provided with axle sleeve, is plugged in axle sleeve to the gap of outer end of stationary axle.By coordinating of stationary axle and axle sleeve, structure is simple, can provide good leading role for the action of telescopic block.
As preferably, have pressure ring at axle sleeve towards an end of piston, pressure ring is fitted on the end face of piston, and spring top is pressed on pressure ring.Be provided with pressure ring, and pressure ring bears the pressure of spring, the structure of pistons end can be simplified, be convenient to the stressed of piston.
As preferably, be provided with coupling head in the outer end of cylindrical shell, the outer end of urceolus is crimped on by inward flange on the exterior edge face of coupling head, and the outer end of inner core is fixed by socket in the plush copper in coupling head; Be provided with pit at the center position of coupling head exterior edge face, be provided with inclined hole in coupling head, inclined hole links up the interval between pit and inside and outside cylinder; The seal ring being socketed in body of rod periphery is provided with in pit.The outer end of cylindrical shell is provided with described structure, be convenient to form stable tube structure, and structure is simple, can adapt to the relative movement of cylindrical shell and piston well.
As preferably, telescopic block is provided with the block amplifier for amplifying the electric current of wire, and spring top is pressed on amplifier.Amplifier is for amplifying the electric current conducting to telescopic block place, amplifier being integrated in telescopic block position, and structure is simple, effectively can improve the speed of response of telescopic block to the working condition of vibration damper.
As preferably, between acceleration sensor and telescopic block, be connected with the amplification circuit for amplifying current in wire.The setting of amplification circuit can be strengthened and accelerates sensing electric current produced in the course of the work, is convenient to telescopic block and can makes the deformation that adapts in time and the effectiveness in vibration suppression that improves vibration damper.
Therefore, beneficial effect of the present invention: this vibration damper directly utilizes spring damping power to reach the object of vibration damping, can not use hydraulic oil, decrease the operating cost of vibration damper in the application process of reality, is convenient to the assembling safety of vibration damper.And telescopic block can make the deformation being conducive to improving vibration damper effectiveness in vibration suppression according to the working condition of vibration damper reality, make the effectiveness in vibration suppression of vibration damper to be guaranteed, can effectively improve driving effect.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of this piezoelectricity type Automatic adjusument damping shock absorber.
Embodiment
See in figure, the structure of piezoelectricity type Automatic adjusument damping shock absorber of the present invention comprises cylindrical shell and piston 12, and piston 12 can be arranged in cylindrical shell axially slidably.Inner end and the piston 12 of the body of rod 17 are connected, and the outer end of the body of rod 17 reaches the outside of cylindrical shell.
Cylindrical shell is double barreled structure, and it comprises the inner core 2 and urceolus 1 that coaxial sleeve 3 is connected together, and inner core 2 is positioned at the inside of urceolus 1, has interval between inner core 2 and urceolus 1.Be provided with coupling block 5 at the inner end of cylindrical shell, coupling block 5 is the one-body molded discoidal projection having protrusion on the end face of piston 12, and the inner end of inner core 2 is socketed on projection.Be provided with end shield 6 at the inner end of urceolus 1, the shaft section of end shield 6 is in "] " shape, the outer circumferential face of end shield 6 is fixed on the inner peripheral surface of urceolus 1 inner end by the mode of welding.Coupling block 5 is bearing on the inner bottom surface of end shield 6, coupling block 5 is provided with bearing bolt 7 towards the end face of piston 12, specifically bearing bolt 7 runs through coupling block 5 along the axis of coupling block 5, bearing bolt 7 is positioned at the home position place of coupling block 5 towards the end face of piston 12, one end of bearing bolt 7 protrudes into the outside of projection exterior edge face, and the other end protrudes into coupling block 5 to deviate from outside the end face of piston 12.
Be provided with block coupling head 14 in the outer end of cylindrical shell, coupling head 14 is towards the one-body molded plush copper having protrusion on the end face of piston 12, and the outer end of inner core 2 is socketed in plush copper; The outer end of urceolus 1 is crimped on the exterior edge face of coupling head 14 by inward flange, under the crimping effect of this flanging, inner core 2 and urceolus 1 constitute a stable tube structure by coupling head 14 and coupling block 5.The center position of coupling head 14 exterior edge face is provided with pit 15, and the body of rod 17 reaches the outside of cylindrical shell through coupling head 14 from pit 15 position.In pit 15, be provided with seal ring 16, seal ring 16 is socketed in the periphery of the body of rod 17, for stopping that extraneous dust enters in cylindrical shell.In coupling head 14, be provided with inclined hole 20, inclined hole 20 one end communicates with pit 15 inside, and the other end communicates with the interval between inner core 2 and urceolus 1.Be provided with this inclined hole 20, thus air flue can be formed with in cylindrical shell, to adapt to piston 12 and cylindrical shell slip to axial between the two, in order to avoid the relative sliding between them is blocked in airtight space.
In inner core 2, be provided with columniform telescopic block 8 between piston 12 and coupling block 5, telescopic block 8 is piezoelectric constant, and under the electric field action applied, telescopic block 8 can become large in piston 12 size axially, and the deformation quantity of telescopic block 8 is directly proportional to the field intensity of electric field.Telescopic block 8 is socketed on stationary axle 4 with gap, and the two ends of stationary axle 4 reach the outside of telescopic block 8 respectively.The end face of piston 12 towards telescopic block 8 is provided with axle sleeve 3, and axle sleeve 3 is arranged along the axis of piston 12, is plugged in axle sleeve 3 to the gap of outer end of stationary axle 4.Be provided with pressure ring 11 in the outer end of axle sleeve 3, pressure ring 11 can be fixed together with axle sleeve 3, and pressure ring 11 also can be the periphery being socketed in axle sleeve 3 actively.Pressure ring 11 and piston 12 fit towards the end face of telescopic block 8.The one-body molded amplifier 9 had for amplifying electric current on the end face of telescopic block 8 towards piston 12, the shape of amplifier 9 is frustoconical, and the little head end of amplifier 9 is towards piston 12, and amplifier 9 is also socketed in the periphery of stationary axle 4.Be socketed with spring 10 in the periphery of axle sleeve 3, the top, one end of spring 10 is pressed on amplifier 9, and the other end top is pressed on pressure ring 11.The inner of stationary axle 4 is disc head portions, and under the effect of spring 10 elastic force, telescopic block 8 is resisted against the inner side of stationary axle 4 disc head portions.Stationary axle 4 is positioned at the axial location place of telescopic block 8, under the effect of spring 10, together with stationary axle 4 disc head portions holds mutually with the outer end of bearing bolt 7.
Be provided with inertial mass 21 in interval between inner core 2 and urceolus 1, inertial mass 21 is ring, and inertial mass 21 is socketed in the periphery of inner core 2.In inertial mass 21, be provided with the cavity volume of annular, be provided with acceleration sensor 13 in this cavity volume, acceleration sensor 13 is also be piezoelectric constant.Acceleration sensor 13 is connected with above-mentioned amplifier 9 by wire 18, and the body of rod 17 is hollow structure, and wire 18 passes from the body of rod 17 inside and is connected with amplifier 9.When cylindrical shell accelerates motion, the axial compression of acceleration sensor 13 own can produce electric charge, be exaggerated device 9 to amplify by the conduction of wire 18, thus produce electric field in telescopic block 8 position, make telescopic block 8 become large, the change conference pressuring spring 10 of telescopic block 8 size in piston 12 size axially, and make the power that spring 10 pairs of cylindrical shell effects are larger, the direction of this power is contrary with the acceleration direction of cylindrical shell, thus the action of retardance vibration damper, reach the object improving effectiveness in vibration suppression.In order to the current signal produced when vibration damper action acceleration sensor 13 amplifies, amplification circuit 19 is accessed between acceleration sensor 13 and amplifier 9, amplification circuit 19 is the same with amplifier 9 function, all that the current signal that acceleration sensor 13 produces is amplified, to improve the speed of response that telescopic block 8 adapts to work requirements.
Claims (10)
1. a piezoelectricity type Automatic adjusument damping shock absorber, comprise cylindrical shell and piston, the inner and the piston of the body of rod are connected, the outer end of the body of rod reaches outside cylindrical shell, it is characterized in that, piston and cylindrical shell two parts, one of them parts is dynamic component, another parts are limiting-members, and dynamic component is for axial motion in limiting-members; Dynamic component is provided with piezoelectric ceramic type acceleration sensor, limiting-members is provided with piezoelectric ceramic type telescopic block axially and movably, is provided with spring between telescopic block and limiting-members, telescopic block is bearing on dynamic component; Be connected by wire between acceleration sensor with telescopic block.
2. piezoelectricity type Automatic adjusument damping shock absorber according to claim 1, is characterized in that, described dynamic component is cylindrical shell, and limiting-members is piston.
3. piezoelectricity type Automatic adjusument damping shock absorber according to claim 2, it is characterized in that, described cylindrical shell comprises the inner core and urceolus that connect together coaxially, inertial mass is between inner core and urceolus, inertial mass is fixed on the outer circumferential face of inner core, and acceleration sensor is arranged in the cavity volume of inertial mass.
4. piezoelectricity type Automatic adjusument damping shock absorber according to claim 3, is characterized in that, is provided with coupling block at the inner place of cylindrical shell, and the inner of inner core is fixed by socket on the projection on coupling block; Shaft section is in "] " end shield of shape is fixed on urceolus the inner place, and coupling block is bearing on the inner bottom surface of end shield.
5. piezoelectricity type Automatic adjusument damping shock absorber according to claim 4, it is characterized in that, bearing bolt is provided with towards the home position place of piston one end face at coupling block, telescopic block is socketed on stationary axle with gap, the two ends of stationary axle reach the outside of telescopic block respectively, and the inner of stationary axle is used for holding mutually with bearing bolt.
6. piezoelectricity type Automatic adjusument damping shock absorber according to claim 5, is characterized in that, the end face of piston towards telescopic block is provided with axle sleeve, is plugged in axle sleeve to the gap of outer end of stationary axle.
7. piezoelectricity type Automatic adjusument damping shock absorber according to claim 6, is characterized in that, have pressure ring at axle sleeve towards an end of piston, pressure ring is fitted on the end face of piston, and spring top is pressed on pressure ring.
8. the piezoelectricity type Automatic adjusument damping shock absorber according to claim 3,4,5,6 or 7, it is characterized in that, coupling head is provided with in the outer end of cylindrical shell, the outer end of urceolus is crimped on by inward flange on the exterior edge face of coupling head, and the outer end of inner core is fixed by socket in the plush copper in coupling head; Be provided with pit at the center position of coupling head exterior edge face, be provided with inclined hole in coupling head, inclined hole links up the interval between pit and inside and outside cylinder; The seal ring being socketed in body of rod periphery is provided with in pit.
9. the piezoelectricity type Automatic adjusument damping shock absorber according to claim 1,2,3,4,5,6 or 7, is characterized in that, telescopic block is provided with the block amplifier for amplifying the electric current of wire, and spring top is pressed on amplifier.
10. the piezoelectricity type Automatic adjusument damping shock absorber according to claim 1,2,3,4,5,6 or 7, is characterized in that, being connected with the amplification circuit for amplifying current in wire between acceleration sensor and telescopic block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507596.4A CN104455193B (en) | 2014-09-29 | 2014-09-29 | Piezoelectric type Automatic adjusument damping shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507596.4A CN104455193B (en) | 2014-09-29 | 2014-09-29 | Piezoelectric type Automatic adjusument damping shock absorber |
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| CN104455193A true CN104455193A (en) | 2015-03-25 |
| CN104455193B CN104455193B (en) | 2016-06-29 |
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| CN201410507596.4A Active CN104455193B (en) | 2014-09-29 | 2014-09-29 | Piezoelectric type Automatic adjusument damping shock absorber |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57101145A (en) * | 1980-12-15 | 1982-06-23 | Sanwa Tekki Corp | Vibration damper |
| CN2318453Y (en) * | 1996-09-23 | 1999-05-12 | 赵晓鹏 | Current variable liquid and piezoelectric ceramic composited self-adaption damper |
| CN1492161A (en) * | 2002-10-21 | 2004-04-28 | 西北工业大学 | Self coupling electric rheological liquid damper without external power |
| JP2012037005A (en) * | 2010-08-10 | 2012-02-23 | Thk Co Ltd | Damping device |
| CN202500947U (en) * | 2012-03-12 | 2012-10-24 | 宁波南方减震器制造有限公司 | Straight cylinder type shock absorber |
| CN203756842U (en) * | 2013-12-27 | 2014-08-06 | 上海汇众萨克斯减振器有限公司 | Damper provided with hollow piston rod |
-
2014
- 2014-09-29 CN CN201410507596.4A patent/CN104455193B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57101145A (en) * | 1980-12-15 | 1982-06-23 | Sanwa Tekki Corp | Vibration damper |
| CN2318453Y (en) * | 1996-09-23 | 1999-05-12 | 赵晓鹏 | Current variable liquid and piezoelectric ceramic composited self-adaption damper |
| CN1492161A (en) * | 2002-10-21 | 2004-04-28 | 西北工业大学 | Self coupling electric rheological liquid damper without external power |
| JP2012037005A (en) * | 2010-08-10 | 2012-02-23 | Thk Co Ltd | Damping device |
| CN202500947U (en) * | 2012-03-12 | 2012-10-24 | 宁波南方减震器制造有限公司 | Straight cylinder type shock absorber |
| CN203756842U (en) * | 2013-12-27 | 2014-08-06 | 上海汇众萨克斯减振器有限公司 | Damper provided with hollow piston rod |
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| CN104455193B (en) | 2016-06-29 |
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