CN106678253B - A kind of damper of matrix string series connection capillary variable system intrinsic frequency - Google Patents
A kind of damper of matrix string series connection capillary variable system intrinsic frequency Download PDFInfo
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- CN106678253B CN106678253B CN201611223460.6A CN201611223460A CN106678253B CN 106678253 B CN106678253 B CN 106678253B CN 201611223460 A CN201611223460 A CN 201611223460A CN 106678253 B CN106678253 B CN 106678253B
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- capillary
- intrinsic frequency
- section
- system intrinsic
- damper
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Classifications
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
- F16F9/464—Control of valve bias or pre-stress, e.g. electromagnetically
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
-
- 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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of dampers of matrix string series connection capillary variable system intrinsic frequency；On pipeline between upper bunker and lower bunker oil transportation mouth, it is connected with capillary tandem damping association section, capillary series system intrinsic frequency association section in turn from top to bottom.Capillary tandem damping association section includes four capillaries being sequentially connected in series, and the both ends of every capillary are parallel with its work of solenoid valve control.It includes concatenated four road capillary that capillary series system intrinsic frequency, which is associated with section,；This four roads capillary is parallel with its work of solenoid valve control.The diameter of frequency modulation section minimum capillary is much larger than the diameter of resistance trimming section capillary.In the working condition table of matrix form, the group state value S of frequency modulation section solenoid valve is chosen according to situationmn, by way of changing quality, the problem of non-adjustable hydraulic vibration damper used for vehicle system frequency or adjustable extent very little can be solved.
Description
Technical field
The present invention relates to hydraulic type automobile damper field more particularly to a kind of variable systems of matrix (formula) string series connection capillary
The damper for intrinsic frequency of uniting.
Background technique
The damping mode of automobile mainly has fluid pressure type, vapour-pressure type, electromagnetic type.Fluid pressure type is to use to obtain widest automobile at present
Damping mode.The system frequency of hydraulic vibration absorber is the important performance indexes of vehicle shock absorber, at present fluid pressure type vibration damping
One of device performance the disadvantage is that the system frequency of damper is non-adjustable or adjustable extent very little.
The quality of hydraulic type automobile damper system intrinsic frequency will directly influence the Oscillation Amplitude of driving, comfort and
Ride comfort.
It is well known that for ideal spring oscillator, as shown in Figure 1, the intrinsic frequency of its system and spring oscillator bead
The square root of quality is inversely proportional；That is, the intrinsic frequency of system can change when changing the quality of bead.Bead
The smaller then system of quality intrinsic frequency it is higher, the intrinsic frequency of the more big then system of the quality of bead is lower.
As shown in Fig. 2, four road capillaries are capillary R8, R4, R2, R1 respectively；Their sectional areas are equal and in parallel respectively
Solenoid valve VR8、VR4、VR2、VR1.The length ratio of this 4 road capillary is 8:4:2:1；I.e. their length be according to 8421 two
Scale coding rule arranges.
In Fig. 2, damper will determine solenoid valve V according to damping requirementsR8、VR4、VR2、VR1Configuration SRn(the value model of n
Enclose: 0,1,2 ..., 15.Wherein SR0Indicate solenoid valve VR8、VR4、VR2、VR1All close.SR1Indicate VR8、VR4、VR2、VR1In only
VR1It is open-minded, remaining closing.SR2Indicate only VR2It is open-minded, remaining closing.SR3Indicate only VR2、VR1It is open-minded, remaining closing.And so on
SR4To SR15Meaning).As configuration SRnIt determines, then participates in the mass M that oscillation carries out the fluid of vibration damping in damperRnAlso it determines
?.Compared with spring oscillator, mass MRnSimilar to the pellet quality of spring oscillator；So the intrinsic frequency of damper system at this time
Rate is then determining, therefore intrinsic frequency is in determining configuration SRnUnder be nonadjustable.
Summary of the invention
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art and deficiency provide a kind of matrix string series connection capillary
The damper of variable system intrinsic frequency achievees the purpose that the system frequency characteristic for improving hydraulic type automobile damper.
The present invention is achieved through the following technical solutions:
A kind of damper of matrix string series connection capillary variable system intrinsic frequency, including vehicle frame 11, axle 17 and hydraulic
Cylinder 13；The upper end of the hydraulic cylinder 13 connects axle 17 by its piston rod connecting vehicle frame 11, the lower end cylinder body of hydraulic cylinder 13；Liquid
Piston 15 in cylinder pressure 13 divides hydraulic cylinder 13 for upper bunker 14 and lower bunker 16；
On pipeline between 16 oil transportation mouth of the upper bunker 14 and lower bunker, it is connected with capillary series connection in turn from top to bottom
Formula damping association section, capillary series system intrinsic frequency are associated with section；That is, the F hydraulic fluid port of capillary tandem damping association section
The E hydraulic fluid port of the A hydraulic fluid port of bunker 14 in connection, capillary tandem damping association section connects capillary series system intrinsic frequency
It is associated with the I hydraulic fluid port of section, the J hydraulic fluid port that capillary series system intrinsic frequency is associated with section connects the B hydraulic fluid port of lower bunker 16.
The capillary tandem damping association section includes four capillaries being sequentially connected in series, wherein every capillary
Both ends are parallel with solenoid valve；The effect of the solenoid valve is to control the on-off of capillary；
The capillary series system intrinsic frequency association section includes concatenated four capillary；This four capillary is equal
It is parallel with solenoid valve；The effect of the solenoid valve is to control the on-off of capillary.
Two interface ends of the capillary series system intrinsic frequency association section are respectively I hydraulic fluid port, J hydraulic fluid port.
Four capillary sectional areas of the capillary series system intrinsic frequency association section are equal.
The length ratio of four capillaries of the capillary series system intrinsic frequency association section is 8:4:2:1；I.e.
Their length is arranged according to 8421 binary coding rule.
In four capillaries of the capillary series system intrinsic frequency association section, the diameter d of capillarymThan series connection
The capillary diameter d of formula damping association sectionRIt is twice above.
The capillary tandem damping association section is associated with the capillary in section with capillary series system intrinsic frequency,
Disk is at " M " word shape, serpentine shape or spiral-shaped.
The capillary tandem damping association section is associated with the solenoid valve in section with capillary series system intrinsic frequency
Also it is connect with capillary control system；Capillary control system is used to control the on-off of each solenoid valve.
Spring 12 is equipped between vehicle frame 11 and axle 17.
The damper operation method of matrix string series connection capillary variable system intrinsic frequency of the present invention, includes the following steps:
When generating relative motion between vehicle frame and axle, piston can generate accordingly or the movement of up or down, at this time liquid
Oil-based liquid in cylinder pressure 13 can be by the capillary tandem damping association section and capillary tandem between A hydraulic fluid port, B hydraulic fluid port
System frequency is associated with section, and then flows to lower bunker 16 from upper bunker 14, or flow to upper bunker 14 from lower bunker 16；
Due to the viscous effect of the intracorporal oil-based liquid of cylinder, when oil-based liquid flows through capillary tandem damping association section
When, the damping of capillary tandem, which is associated with the capillary to work in section, to generate damping to the flowing of oil-based liquid, thus formation pair
The mobile resistance of piston；The size of the resistance is passed through the configuration S of solenoid valve by capillary control systemRnControl, and then realize hair
The resistance trimming of tubule tandem damping association section；
When oil-based liquid flows through capillary series system intrinsic frequency association section, changed by capillary control system
The configuration S of solenoid valvemn, then the system frequency of adjustable vibration-damper, and then realization capillary series system intrinsic frequency
It is associated with the frequency modulation of section.
Damper operation method of the invention is described further below:
When generating relative motion between vehicle frame and axle, piston can generate accordingly or the movement of up or down, at this time liquid
Oil-based liquid in cylinder pressure 13 can be by capillary tandem damping association section (the hereinafter referred to as resistance trimming between A hydraulic fluid port, B hydraulic fluid port
Section) it is associated with capillary series system intrinsic frequency section (hereinafter referred to as frequency modulation section), and then lower bunker is flowed to from upper bunker 14
16, or upper bunker 14 is flowed to from lower bunker 16.
Due to the viscous effect of the intracorporal oil-based liquid of cylinder, when oil-based liquid flows through resistance trimming section, the capillary of resistance trimming section
Meeting generates damping to the flowing of oil-based liquid, to form the resistance mobile to piston；The size of the resistance is controlled by capillary
System passes through the configuration S of solenoid valveRnControl, and then realize the resistance trimming of resistance trimming section.
In damper according to damping requirements by the configuration S of resistance trimming sectionRnAfter deciding, damper is further according to intrinsic frequency
It is required that the solenoid valve V that will determine frequency modulation sectionm8、Vm4、Vm2、Vm1Configuration Smn。SmnIn, the value range of n is 0,1,2 ..., 15；
Wherein Sm0Indicate solenoid valve Vm8、Vm4、Vm2、Vm1All close；Sm1Indicate Vm8、Vm4、Vm2、Vm1In only Vm1It is open-minded, remaining closing；
Sm2Indicate only Vm2It is open-minded, remaining closing；Sm3Indicate only Vm2、Vm1It is open-minded, remaining closing.And so on Sm4To Sm15。
As the configuration S of frequency modulation sectionmnIt determines, then participates in the mass M of the fluid of oscillation in frequency modulation sectionmnAlso it determines that；To
It participates in oscillation in damper and carries out the quality of the fluid of vibration damping to be then MRn+Mmn(M hereinRnFor the fluid for participating in oscillation in resistance trimming section
Quality).Compared with spring oscillator, mass MRn、MmnSynthesis quality be then similar to the pellet quality of spring oscillator；We are logical
Cross change MmnTo change MRn、MmnSynthesis quality to change the intrinsic frequency of damper system.
Because the diameter of the capillary of frequency modulation section is all much larger than the diameter of the capillary of resistance trimming section, the pressure of frequency modulation section
Head loss is just much smaller than the head loss of resistance trimming section.In this way, the damping of damper is mainly exactly the damping of resistance trimming section, it therefore, will
Capillary tandem damping association section is also referred to as resistance trimming section.Again because of influence very little of the frequency modulation section to damping, and it can change
Become the system frequency of damper, so, capillary series system intrinsic frequency association section is referred to as frequency modulation section.And because
Tandem capillary is also used to adjust with the adjusting of tandem capillary, frequency modulation section for resistance trimming section, so, this system is exactly string series connection hair
(working method of first " string " expression resistance trimming section is series system, the work of second " string " expression frequency modulation section to tubule damper
It is series system as mode).
Because the diameter of the damping very little of frequency modulation section, frequency modulation section capillary is bigger, we can be easy to pass through
The length of frequency modulation section capillary is lengthened by MmnIt is made much larger than MRn, so as to by the adjusting model of damper system intrinsic frequency
It encloses and is made very big.
The resistance trimming section of damper, frequency modulation section tandem working, the state of resistance trimming section is by configuration SRnDetermine, the state of frequency modulation section by
Configuration SmnIt determines；So the working condition of damper can be indicated with following table.
The theoretical work state table of damper:
Valued content in table above can be regarded to 16 × 16 matrix as, the element of the matrix is exactly (SRn,
Smn).Therefore, the mode of the theoretical work state matrix of damper clearly and succinctly is illustrated out by the present invention, so this
The system of invention is referred to as a kind of vehicle shock absorber of matrix string series connection capillary variable system intrinsic frequency.
The configuration S of each solenoid valve in resistance trimming section and frequency modulation sectionRn、SmnIt is controlled by the capillary control system of damper.
Because of the M of frequency modulation sectionmnAdjustable range it is very big, so the range that damper system intrinsic frequency changes is also very big；
To solve the problems, such as that hydraulic buffer system frequency is non-adjustable or adjustable extent very little.
The present invention compared with the existing technology, have following advantages and effects
The configuration S that the present invention passes through change frequency modulation section solenoid valvemnIt is non-adjustable to solve hydraulic buffer system frequency
Or the problem of adjustable extent very little.
Present inventive concept is ingenious, cheap, technological means is simple and easy to do.The present invention is constructed with simple mechanical structure
Digitlization adjusts the executing agency of damper system intrinsic frequency, and by the mode of the theoretical work state matrix of damper
Clearly and succinctly illustrate out；The quality of the system frequency of hydraulic buffer is greatly improved, Hyundai Motor is subtracted
The development of vibration technology has beneficial effect positive, outstanding.
Detailed description of the invention
Fig. 1 is existing spring oscillator schematic diagram.
Fig. 2 is the structural schematic diagram of the vehicle shock absorber of existing variable damp of capillary tubes in serial connection.
Fig. 3 is the damper structure schematic diagram of matrix string of the present invention series connection capillary variable system intrinsic frequency.
Specific embodiment
The present invention is more specifically described in detail combined with specific embodiments below.
Embodiment
Fig. 1, Fig. 2 related content are shown in background technology part.
As shown in Figure 3.Resistance trimming section includes that four capillaries are R8, R4, R2, R1 respectively；Their sectional areas are equal and distinguish
Solenoid valve V in parallelR8、VR4、VR2、VR1Control its work.The length ratio of this four capillary is 8:4:2:1；Their diameter is equal
For dR。
Frequency modulation section includes that four capillaries are m8, m4, m2, m1 respectively；Their sectional areas are equal and distinguish solenoid valve in parallel
Vm8、Vm4、Vm2、Vm1Control its work；The length ratio of this four capillary is 8:4:2:1.In the present embodiment, this four hairs
The length L of most short capillary m1 in tubulem1Equal to the length L of resistance trimming section longest capillary R8R8Half.This four capillary
Diameter dmEqual to 4 times dR。
In damper according to damping requirements by the configuration S of resistance trimming sectionRnAfter deciding, damper is further according to intrinsic frequency
It is required that the solenoid valve V that will determine frequency modulation sectionm8、Vm4、Vm2、Vm1Configuration Smn；As the configuration S of frequency modulation sectionmnIt determines, then in frequency modulation section
Participate in the mass M of the fluid of oscillationmnAlso it determines that；Then it is to participate in the quality for the fluid that oscillation carries out vibration damping in damper
MRn+Mmn(M hereinRnFor the quality for participating in the fluid vibrated in resistance trimming section).Compared with spring oscillator, mass MRn、MmnSynthesis
Quality is then similar to the pellet quality of spring oscillator；We are by changing MmnTo change MRn、MmnSynthesis quality to change subtract
The intrinsic frequency for device system of shaking.
In the present embodiment, because of diameter dm=4dR, Lm1=0.5LR8；So the head loss of frequency modulation section is just much smaller than
The head loss of resistance trimming section.Again because of diameter dm=4dR, Lm1=0.5LR8；So the M of frequency modulation sectionmnMuch larger than the M of resistance trimming sectionRn,
So that the adjustable range of damper system intrinsic frequency is very big.
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other are any without departing from Spirit Essence of the invention
With changes, modifications, substitutions, combinations, simplifications made under principle, equivalent substitute mode should be, be included in of the invention
Within protection scope.
Claims (9)
1. a kind of damper of matrix string series connection capillary variable system intrinsic frequency, including vehicle frame (11), axle (17) and liquid
Cylinder pressure (13)；The upper end of the hydraulic cylinder (13) is connected by its piston rod connecting vehicle frame (11), the lower end cylinder body of hydraulic cylinder (13)
Pick up axis (17)；Hydraulic cylinder (13) is divided into upper bunker (14) and lower bunker (16) by the piston (15) in hydraulic cylinder (13)；It is special
Sign is:
On pipeline between the upper bunker (14) and lower bunker (16) oil transportation mouth, it is connected with capillary series connection in turn from top to bottom
Formula damping association section, capillary series system intrinsic frequency are associated with section；That is, the F hydraulic fluid port of capillary tandem damping association section
The E hydraulic fluid port of the A hydraulic fluid port of bunker (14) in connection, capillary tandem damping association section connects the intrinsic frequency of capillary series system
Rate is associated with the I hydraulic fluid port of section, and the J hydraulic fluid port that capillary series system intrinsic frequency is associated with section connects the B hydraulic fluid port of lower bunker (16)；
That is, first " string " in matrix string series connection capillary variable system intrinsic frequency indicates that the working method of resistance trimming section is series connection side
The working method of formula, second " string " expression frequency modulation section is series system.
2. the damper of matrix string series connection capillary variable system intrinsic frequency according to claim 1, it is characterised in that: institute
Stating capillary tandem damping association section includes four capillaries being sequentially connected in series, wherein the both ends of every capillary are in parallel
There is solenoid valve；
The capillary series system intrinsic frequency association section includes concatenated four capillary；This four capillary is in parallel
There is solenoid valve.
3. the damper of matrix string series connection capillary variable system intrinsic frequency according to claim 2, it is characterised in that: institute
Two interface ends for stating capillary series system intrinsic frequency association section are respectively I hydraulic fluid port, J hydraulic fluid port.
4. the damper of matrix string series connection capillary variable system intrinsic frequency according to claim 2, it is characterised in that: institute
The four capillary sectional areas for stating capillary series system intrinsic frequency association section are equal.
5. the damper of matrix string series connection capillary variable system intrinsic frequency according to claim 2, it is characterised in that: institute
The length ratio for stating four capillaries of capillary series system intrinsic frequency association section is 8:4:2:1；That is their length
It is to be arranged according to 8421 binary coding rule.
6. the damper of matrix string series connection capillary variable system intrinsic frequency according to claim 5, it is characterised in that: institute
In four capillaries for stating capillary series system intrinsic frequency association section, the diameter d of capillarymIt damps and is associated with than tandem
The capillary diameter d of sectionRIt is twice above.
7. the damper for capillary variable system intrinsic frequency of connecting according to claim 1 to matrix string described in any one of 6,
Be characterized in that: the capillary tandem damping association section is associated with the capillary in section with capillary series system intrinsic frequency
Pipe, disk are at " M " word shape, serpentine shape or spiral-shaped.
8. the damper of matrix string series connection capillary variable system intrinsic frequency according to claim 7, it is characterised in that: institute
State capillary tandem damping association section and capillary series system intrinsic frequency association section in solenoid valve also with capillary
Control system connection；Capillary control system is used to control the on-off of each solenoid valve.
9. the damper of matrix string series connection capillary variable system intrinsic frequency according to claim 7, it is characterised in that: vehicle
Spring (12) are equipped between frame (11) and axle (17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611223460.6A CN106678253B (en) | 2016-12-27 | 2016-12-27 | A kind of damper of matrix string series connection capillary variable system intrinsic frequency |
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| CN201611223460.6A CN106678253B (en) | 2016-12-27 | 2016-12-27 | A kind of damper of matrix string series connection capillary variable system intrinsic frequency |
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| CN108180244A (en) * | 2018-01-26 | 2018-06-19 | 华南理工大学 | The string series connection R formulas vehicle shock absorber and method that a kind of turbine recovers energy |
| CN109083969A (en) * | 2018-08-29 | 2018-12-25 | 华南理工大学 | A kind of Calculation of pressure loss method of string series connection R formula vehicle shock absorber |
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| JP5463263B2 (en) * | 2009-11-30 | 2014-04-09 | 日立オートモティブシステムズ株式会社 | Suspension control device for vehicle |
| CN102518732B (en) * | 2011-12-27 | 2014-07-02 | 华南理工大学 | Automobile damper with variable damp of capillary tubes in serial connection |
| DE102012004684A1 (en) * | 2012-03-12 | 2013-09-12 | Daimler Ag | Shock absorber for motor car, has frequency-selective valve for damping mechanical vibrations in frequency-resolved manner, and electrical displacement damping valve designed such that force-speed-characteristic is adjustable |
| US9399382B2 (en) * | 2014-02-03 | 2016-07-26 | Cnh Industrial America Llc | Roll-over protection system |
| CN206419414U (en) * | 2016-12-27 | 2017-08-18 | 华南理工大学 | A kind of shock absorber of matrix string series connection capillary variable system intrinsic frequency |
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