CN103133590A - Design method of vehicle damper compression valve limiting checking ring curved surface shape - Google Patents

Design method of vehicle damper compression valve limiting checking ring curved surface shape Download PDF

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Publication number
CN103133590A
CN103133590A CN2013100821278A CN201310082127A CN103133590A CN 103133590 A CN103133590 A CN 103133590A CN 2013100821278 A CN2013100821278 A CN 2013100821278A CN 201310082127 A CN201310082127 A CN 201310082127A CN 103133590 A CN103133590 A CN 103133590A
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valve
compression
compression valve
time
choke pressure
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Chinese (zh)
Inventor
周长城
李迪
刘小亭
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Shandong University of Technology
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Shandong University of Technology
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Abstract

The invention relates to a design method of a vehicle damper compression valve limiting checking ring curved surface shape and belongs to the technical filed of hydraulic dampers. At present, the design method of the vehicle damper compression valve limiting checking ring curved surface shape is not accurate and reliable at home and abroad. The design method of the vehicle damper compression valve limiting checking ring curved surface shape is characterized in that a curved surface shape of a damper stacking compression valve limiting checking ring is designed according to the thicknesses and the number of compression valve stacking sheets, oil ways after primary opening of a valve and design demands of primary valve-opening speed characteristics and the largest valve-opening speed characteristics. An accurate curved surface shape design curves is provided. Accurate and reliable design values of the damper compression valve limiting checking ring curved surface shape are obtained by using the method. The largest valve-opening speed characteristics of damper compression travel are guaranteed. A stress condition is improved when the compression valve sheets is in the largest valve-opening. Service life of the bumper is prolonged. Meanwhile, repeated experiments, verification and modification are avoided. Expenses of designs and experiments of the bumper are reduced. Development period is shortened.

Description

The design method of the spacing back-up ring curve form of vehicle shock absorber compression valve
Technical field
The present invention relates to dydraulic shock absorber, particularly the design method of the spacing back-up ring curve form of vehicle shock absorber compression valve.
Background technique
In order to prevent that dydraulic shock absorber is in the large impact situation, distortion and the aperture of compression valve block increase, and make vibration damper the electrical breakdown phenomenon occur, usually all be provided with spacing back-up ring below the compression valve block, wherein, spacing back-up ring curve form is opened the valve damping characteristic to the maximum of dydraulic shock absorber compression stroke and is had material impact, appropriate curve form, not only can guarantee to satisfy the designing requirement that vibration damper compression stroke maximum is opened the valve damping characteristic, also can improve simultaneously the compression valve of shock absorber sheet in stress, improve the working life of vibration damper.then, due to the restriction that is subjected to the distortion of vibration damper valve block and the non-linear restriction loss problem of fluid, and the oil circuit of compression stroke is more complicated than restoring stroke, the structure influence of valve seat assembly and compression valve by compression not only, but also be subjected to the piston gap and restore the impact of normal open hole area, therefore, domestic at present, outward to the spacing back-up ring curve form of hydraulic shock absorber compression valve also not accurately, reliable design method, even some directly utilizes common packing ring to replace, therefore, be difficult to satisfy the requirement that the vibration damper maximum is opened the valve speed characteristics, can not guarantee the stress intensity designing requirement of the compression valve block when maximum is driven valve.Along with the fast development of automotive industry and improving constantly of Vehicle Speed, higher designing requirement has been proposed absorber designing.Therefore, a kind of design method of accurate, the reliable spacing back-up ring curve form of vehicle shock absorber compression valve be must set up, to satisfy the requirement to the dydraulic shock absorber design, absorber designing level, performance, quality and working life improved.
Summary of the invention
For the defective that exists in above-mentioned prior art, technical problem to be solved by this invention is to provide the design method of the spacing back-up ring curve form of a kind of easy, accurate, reliable vehicle shock absorber compression valve, and its design cycle as shown in Figure 1.
In order to solve the problems of the technologies described above, the design method of the spacing back-up ring curve form of vehicle shock absorber compression valve provided by the present invention, its technological scheme implementation step is as follows:
(1) determine the equivalent thickness of compression valve of shock absorber stack valve block h e:
According to the thickness of compression valve stack valve block and sheet number ( h 1, n 1 h 2, n 2 h n, n n), determine the equivalent thickness of compression valve of shock absorber stack valve block ;
(2) compression valve block meaning radius in office rThe position deformation coefficient G r Calculating:
Interior circle radius according to the compression valve block r a, exradius r b, the valve port radius r k, Young's modulus E, Poisson's ratio μ calculates compression valve block meaning radius in office rThe position deformation coefficient G r , that is:
；
Wherein,
Figure 2013100821278100002DEST_PATH_IMAGE006
，
Figure 2013100821278100002DEST_PATH_IMAGE010
；
Figure 2013100821278100002DEST_PATH_IMAGE012
,
Figure 2013100821278100002DEST_PATH_IMAGE014
,
Figure 2013100821278100002DEST_PATH_IMAGE016
,
Figure 2013100821278100002DEST_PATH_IMAGE018
，
Figure 2013100821278100002DEST_PATH_IMAGE020
，
Figure 2013100821278100002DEST_PATH_IMAGE022
，
Figure 2013100821278100002DEST_PATH_IMAGE024
，
Figure 2013100821278100002DEST_PATH_IMAGE026
，
Figure 2013100821278100002DEST_PATH_IMAGE028
，
Figure 2013100821278100002DEST_PATH_IMAGE030
，
Figure 2013100821278100002DEST_PATH_IMAGE032
， ；
Figure 2013100821278100002DEST_PATH_IMAGE036
Figure 2013100821278100002DEST_PATH_IMAGE038
Figure 2013100821278100002DEST_PATH_IMAGE040
，
Figure 2013100821278100002DEST_PATH_IMAGE042
，
Figure 2013100821278100002DEST_PATH_IMAGE046
Figure 2013100821278100002DEST_PATH_IMAGE048
Figure 2013100821278100002DEST_PATH_IMAGE052
Figure 2013100821278100002DEST_PATH_IMAGE054
Figure 2013100821278100002DEST_PATH_IMAGE056
Figure 2013100821278100002DEST_PATH_IMAGE062
，
Figure 2013100821278100002DEST_PATH_IMAGE066
Figure 2013100821278100002DEST_PATH_IMAGE068
，
，
Figure 2013100821278100002DEST_PATH_IMAGE072
Figure 2013100821278100002DEST_PATH_IMAGE074
Figure 2013100821278100002DEST_PATH_IMAGE076
Figure 2013100821278100002DEST_PATH_IMAGE078
，
Figure 2013100821278100002DEST_PATH_IMAGE080
Figure 2013100821278100002DEST_PATH_IMAGE082
Figure 2013100821278100002DEST_PATH_IMAGE084
Figure 2013100821278100002DEST_PATH_IMAGE086
Figure 2013100821278100002DEST_PATH_IMAGE088
Figure 2013100821278100002DEST_PATH_IMAGE094
Figure 2013100821278100002DEST_PATH_IMAGE096
，
Wherein,
Figure 2013100821278100002DEST_PATH_IMAGE098
(3) calculate the choke pressure that compression stroke is opened valve and maximum flowing valve when driving valve for the first time p lk1 , p lk2 :
Open for the first time oil circuit after valve, piston diameter according to compression valve of shock absorber
Figure 2013100821278100002DEST_PATH_IMAGE100
, diameter of piston rod d g, the piston gap
Figure 2013100821278100002DEST_PATH_IMAGE102
, gap length
Figure 2013100821278100002DEST_PATH_IMAGE104
, the piston eccentricity
Figure 2013100821278100002DEST_PATH_IMAGE106
, the fluid kinetic viscosity
Figure 2013100821278100002DEST_PATH_IMAGE108
, fluid density
Figure 2013100821278100002DEST_PATH_IMAGE110
, rebuilt valve normal open hole area , flow coefficient
Figure 2013100821278100002DEST_PATH_IMAGE114
, the circulation throttle slice thickness h l , exradius
Figure 2013100821278100002DEST_PATH_IMAGE116
, the valve port radius
Figure 2013100821278100002DEST_PATH_IMAGE118
, valve port radius deformation coefficient , and open for the first time valve speed , the choke pressure of the flowing valve when setting up compression stroke and driving valve for the first time p lk1 Equation, that is:
；
Separate above-mentioned equation, just can obtain the choke pressure of the flowing valve when compression stroke is driven valve for the first time p lk1
In like manner, with in equation V k1yWith p lk1 Use respectively V k2yWith p lk2 Replace choke pressure equation and the choke pressure of the flowing valve in the time of just can obtaining the compression stroke maximum and drive valve p lk2 Value;
The choke pressure in compression valve seat hole when (4) calculating maximum is driven valve p Hyk2:
Open valve speed according to maximum V k2y, diameter of piston rod d g, the diameter in compression valve seat hole
Figure 2013100821278100002DEST_PATH_IMAGE126
And number
Figure 2013100821278100002DEST_PATH_IMAGE128
, flow coefficient , fluid density
Figure 546379DEST_PATH_IMAGE110
, the choke pressure in compression valve seat hole when calculating vibration damper compression stroke maximum is driven valve p Hyk2, that is:
；
(5) calculate the choke pressure in compression valve seat hole when driving valve for the first time p Hyk1:
According to diameter of piston rod d g, the diameter in compression valve seat hole
Figure 260869DEST_PATH_IMAGE126
And number , flow coefficient , fluid density
Figure 637121DEST_PATH_IMAGE110
, open for the first time the valve speed point V k1y, calculate the choke pressure in compression valve seat hole when opening valve point for the first time p Hyk1, be distributed as:
Figure 2013100821278100002DEST_PATH_IMAGE132
；
The choke pressure of compression valve throttle hole when (6) calculating maximum is driven valve :
Damping force when driving valve according to vibration damper compression stroke maximum
Figure 2013100821278100002DEST_PATH_IMAGE136
, the piston bore internal diameter D H, diameter of piston rod d g, in step (4) , and in step (3) p lk2 , the choke pressure of compression valve throttle hole when the calculating maximum is driven valve
Figure 779521DEST_PATH_IMAGE134
, that is:
Figure 2013100821278100002DEST_PATH_IMAGE140
(7) calculate the choke pressure of compression valve throttle hole when driving valve for the first time
Figure 2013100821278100002DEST_PATH_IMAGE142
:
According to the piston bore internal diameter D H, diameter of piston rod d g, open for the first time the valve damping force
Figure 2013100821278100002DEST_PATH_IMAGE144
, in step (5)
Figure 2013100821278100002DEST_PATH_IMAGE146
, and in step (3) p lk1 , the choke pressure of compression valve throttle hole when calculating is driven valve for the first time
Figure 853787DEST_PATH_IMAGE142
, that is:
Figure 2013100821278100002DEST_PATH_IMAGE148
(8) design of the spacing back-up ring curve form of compression valve of shock absorber:
The height of back-up ring inner circle spacing according to compression valve of shock absorber y 0, in step (1) h e, in step (2)
Figure 2013100821278100002DEST_PATH_IMAGE150
, in step (6)
Figure 460349DEST_PATH_IMAGE134
, and in step (7)
Figure 984871DEST_PATH_IMAGE142
, to the spacing back-up ring curve form of compression valve of shock absorber y r Design, that is:
Figure 2013100821278100002DEST_PATH_IMAGE152
。
The present invention has advantages of than prior art:
Due to the restriction that is subjected to the distortion of vibration damper valve block and the non-linear restriction loss problem of fluid, the home and abroad does not also have accurate, reliable design method to the spacing back-up ring curve form of hydraulic shock absorber compression valve at present.The present invention can be according to thickness and the sheet number of compression stack valve block, compression valve is opened the oil circuit after valve for the first time, and the vibration damper compression stroke is opened valve and maximum designing requirement of opening the valve speed characteristics for the first time, curve form to the spacing back-up ring of vibration damper stacked compression valve designs, and provides accurate curve form design curve.Utilize this design method, can obtain the design load of the spacing back-up ring curve form of compression valve of shock absorber accurately and reliably, guarantee the designing requirement that vibration damper compression stroke maximum is opened the valve speed characteristics, improve the stress of compression valve block when maximum is driven valve, improve the working life of vibration damper, simultaneously, also can avoid repetition test, checking and modification, reduce absorber designing and testing expenses, shorten the construction cycle.
Be further described below in conjunction with accompanying drawing in order to understand better the present invention.
The flow chart of the spacing back-up ring curved design of Fig. 1 vehicle shock absorber compression valve;
Fig. 2 is damper piston assembly and compression valve structure figure;
Fig. 3 is compression valve of shock absorber limiting block loop graph;
Fig. 4 is the oil circuit figure after compression valve of shock absorber is driven valve for the first time;
Fig. 5 is the desired speed characteristic curve of embodiment one absorber designing;
Fig. 6 is the deformation coefficient Gr curve of embodiment one compression valve of shock absorber sheet;
Fig. 7 is the curved design shape of the spacing back-up ring of compression valve of embodiment one vibration damper;
Fig. 8 is the speed characteristic curve that embodiment one design shock absorber gear performance test obtains;
Fig. 9 is the desired speed characteristic curve of embodiment two absorber designing;
Figure 10 is the curved design shape of embodiment two the spacing back-up ring of compression valve of shock absorber;
Figure 11 is the speed characteristic curve that embodiment two design shock absorber gear performance test obtains;
Figure 12 is the deformation coefficient Gr curve of embodiment three compression valve of shock absorber sheet;
Figure 13 is the curved design shape of embodiment three the spacing back-up ring of compression valve of shock absorber.
Specific embodiments
Below by embodiment, the present invention is described in further detail.
Embodiment one: certain compression valve of shock absorber seat assembly and compression valve structure as shown in Figure 2, recuperation valve spring 1, compensation valve block 2, compression valve seat hole 3, the fastening rivet 4 of compression valve, compression valve block 5, compression valve gap limit back-up ring 6; Compression valve body 7, the spacing clearance ring 8 of compression valve, recuperation valve is crossed oily passage 9, recuperation valve spring seat 10, wherein, the surface of the spacing back-up ring 6 of compression valve is certain curved surface, as shown in Figure 3.The structural parameter of this vibration damper and valve body structure and fluid parameter are as follows: the piston bore internal diameter
Figure DEST_PATH_IMAGE154
, diameter of piston rod d g=20mm, the annulus area between piston bore and piston rod
Figure DEST_PATH_IMAGE156
The piston gap length The piston mean gap
Figure DEST_PATH_IMAGE160
Eccentricity
Figure DEST_PATH_IMAGE162
Fluid kinematical viscosity viscosity
Figure DEST_PATH_IMAGE164
= m 2/ s, density
Figure DEST_PATH_IMAGE168
, kinetic viscosity
Figure DEST_PATH_IMAGE170
The diameter in compression valve seat hole
Figure DEST_PATH_IMAGE172
, number
Figure DEST_PATH_IMAGE174
The exradius of compression valve block
Figure DEST_PATH_IMAGE176
, interior circle radius
Figure DEST_PATH_IMAGE178
, the valve port radius
Figure DEST_PATH_IMAGE180
Thickness and the sheet number of compression valve stack valve block are h 1=0.10mm, n 1=1; h 2=0.15mm, n 2=1; Compression valve normal open hole area Rebuilt valve normal open hole area
Figure DEST_PATH_IMAGE184
, normal open orifice flow flow coefficient
Figure DEST_PATH_IMAGE186
The interior circle radius of circulation valve block
Figure DEST_PATH_IMAGE188
, exradius
Figure DEST_PATH_IMAGE190
, the valve port radius
Figure DEST_PATH_IMAGE192
, valve port radial location deformation coefficient
Figure DEST_PATH_IMAGE194
7.72
Figure DEST_PATH_IMAGE196
Figure DEST_PATH_IMAGE198
The desired speed characteristics of absorber designing, as shown in Figure 5, wherein, compression valve of shock absorber is opened valve speed for the first time
Figure DEST_PATH_IMAGE200
, open for the first time the valve damping force
Figure DEST_PATH_IMAGE202
Maximum is opened valve speed
Figure DEST_PATH_IMAGE204
, maximum is opened the valve damping force
Figure DEST_PATH_IMAGE206
The inner circle height of the spacing back-up ring of compression valve y 0=5.0mm.
The design method of the spacing back-up ring curve form of vehicle shock absorber compression valve that example of the present invention provides, its design cycle as shown in Figure 1, concrete steps are as follows:
(1) determine the equivalent thickness of compression valve of shock absorber stack valve block h e:
According to thickness and the sheet number of compression valve stack valve block be h 1=0.10mm, n 1=1; h 2=0.15mm, n 2=1; Determine the equivalent thickness of compression valve of shock absorber stack valve block
Figure DEST_PATH_IMAGE208
, for:
Figure DEST_PATH_IMAGE210
=0.16355mm；
(2) compression valve block meaning radius in office rThe position deformation coefficient G r Calculating:
Interior circle radius according to the compression valve block r a=3.8mm, exradius r b=8.0mm, the valve port radius r k=6.4mm, Young's modulus E=200GPa, compression valve block meaning radius in office is calculated in Poisson's ratio μ=0.3 rThe position deformation coefficient G r , that is:
Figure 860905DEST_PATH_IMAGE004
；
Wherein,
Figure 4441DEST_PATH_IMAGE006
Figure 58985DEST_PATH_IMAGE008
，
Figure 895354DEST_PATH_IMAGE010
；
Figure 668138DEST_PATH_IMAGE012
=-5.12 ,
Figure 889733DEST_PATH_IMAGE014
=-0.0022,
Figure 533204DEST_PATH_IMAGE016
=- 1.2334
Figure DEST_PATH_IMAGE214
,
Figure DEST_PATH_IMAGE216
=- 7.8388
Figure DEST_PATH_IMAGE218
，
Figure 743737DEST_PATH_IMAGE020
=263.1579，
Figure 879183DEST_PATH_IMAGE022
=-0.0386，
Figure 957998DEST_PATH_IMAGE024
=0.076，
Figure 987133DEST_PATH_IMAGE026
=2.1949 ，
Figure 647102DEST_PATH_IMAGE028
=-1.0938
Figure DEST_PATH_IMAGE220
，
Figure 467290DEST_PATH_IMAGE030
=- 9.2536，
Figure 819774DEST_PATH_IMAGE032
=2.6，
Figure 168847DEST_PATH_IMAGE034
= 8.448
Figure 137940DEST_PATH_IMAGE212
；
Figure 496240DEST_PATH_IMAGE038
Figure 968810DEST_PATH_IMAGE040
=- 2.9669
Figure 485855DEST_PATH_IMAGE196
，
Figure 942244DEST_PATH_IMAGE042
=- 8.1536 ，
Figure 104235DEST_PATH_IMAGE044
Figure DEST_PATH_IMAGE225
Figure 572256DEST_PATH_IMAGE048
Figure 387766DEST_PATH_IMAGE050
=- 3.1088 ；
Figure 144500DEST_PATH_IMAGE054
Figure 703657DEST_PATH_IMAGE056
Figure 885240DEST_PATH_IMAGE058
Figure 912419DEST_PATH_IMAGE062
=- 1.8606 ，
Figure 416213DEST_PATH_IMAGE098
= 1.4929
Figure 124406DEST_PATH_IMAGE218
；
Calculate resulting compression valve block meaning radius in office rThe deformation coefficient of position G r Curve, as shown in Figure 6;
(3) calculate the choke pressure that compression stroke is opened valve and maximum flowing valve when driving valve for the first time p lk1 , p lk2 :
Shown in Figure 4 according to the oil circuit that compression valve of shock absorber is opened after valve for the first time, the piston bore internal diameter
Figure 484980DEST_PATH_IMAGE100
=28mm, diameter of piston rod d g=20mm, the piston gap
Figure 403257DEST_PATH_IMAGE102
=0.04mm, gap length
Figure 176654DEST_PATH_IMAGE104
=9mm, the piston eccentricity =1.0, the fluid kinetic viscosity
Figure 801987DEST_PATH_IMAGE170
, fluid density , rebuilt valve normal open hole area
Figure 521998DEST_PATH_IMAGE112
=0.8mm 2, flow coefficient
Figure 63838DEST_PATH_IMAGE114
=0.62; The circulation throttle slice thickness h l =0.1mm, exradius
Figure 31794DEST_PATH_IMAGE116
=11.0mm, the valve port radius
Figure 65609DEST_PATH_IMAGE118
=10.5mm, the deformation coefficient of valve port radius
Figure 714896DEST_PATH_IMAGE194
7.72
Figure 125466DEST_PATH_IMAGE198
, and open for the first time valve speed
Figure 240053DEST_PATH_IMAGE122
=0.3m/s, the choke pressure of the flowing valve when setting up compression stroke and driving valve for the first time p lk1 Equation, that is:
Figure DEST_PATH_IMAGE232
；
Separate above-mentioned equation, just can obtain the choke pressure of the flowing valve when compression stroke is driven valve for the first time p lk1 =1.9658 * 10 4Pa;
In like manner, with in equation V k1yWith p lk1 Use respectively V k2yWith p lk2 Replace choke pressure equation and the choke pressure of the flowing valve in the time of just can obtaining the compression stroke maximum and drive valve p lk2 =2.6737 * 10 4Pa;
The choke pressure in compression valve seat hole when (4) calculating maximum is driven valve p Hyk2:
According to diameter of piston rod d g=20mm, the diameter in compression valve seat hole
Figure 427452DEST_PATH_IMAGE126
=2.0mm and number
Figure 819250DEST_PATH_IMAGE128
=4, flow coefficient
Figure 660167DEST_PATH_IMAGE114
=0.62, fluid density
Figure 134486DEST_PATH_IMAGE168
, maximum is opened valve speed V k2y=1.0m/s, the choke pressure in compression valve seat hole when calculating vibration damper compression stroke maximum is driven valve p Hyk2, that is:
Figure 719051DEST_PATH_IMAGE130
= 7.2353×10 5 Pa；
(5) calculate the choke pressure in compression valve seat hole when driving valve for the first time p Hyk1:
According to diameter of piston rod d g=20mm, the diameter in compression valve seat hole
Figure 965356DEST_PATH_IMAGE126
=2.0mm and number =4, flow coefficient =0.62, fluid density
Figure 533237DEST_PATH_IMAGE168
, open for the first time the valve speed point V k1y=0.3m/s calculates the choke pressure in compression valve seat hole when opening valve point for the first time p Hyk1, be distributed as:
Figure 758682DEST_PATH_IMAGE132
= 6.5118×10 4 Pa；
The choke pressure of compression valve throttle hole when (6) calculating maximum is driven valve
Figure 816768DEST_PATH_IMAGE134
:
Damping force when driving valve according to vibration damper compression stroke maximum
Figure 393243DEST_PATH_IMAGE136
=650N, the piston bore internal diameter D H=28mm, diameter of piston rod d g=20mm, in step (4)
Figure 788452DEST_PATH_IMAGE138
=7.2353 * 10 5Pa, and in step (3) p lk2 =2.6737 * 10 4Pa, the choke pressure of compression valve throttle hole when the calculating maximum is driven valve
Figure 743770DEST_PATH_IMAGE134
, that is:
Figure 362970DEST_PATH_IMAGE140
=1.3198×10 6Pa；
(7) calculate the choke pressure of compression valve throttle hole when driving valve for the first time
Figure 36528DEST_PATH_IMAGE142
:
According to the damper piston internal diameter of cylinder D H=28mm, diameter of piston rod d g=20mm opens the valve damping force for the first time
Figure 766587DEST_PATH_IMAGE144
=260N, in step (5)
Figure 576411DEST_PATH_IMAGE146
=6.5118 , and in step (3) p lk1 =1.9658
Figure 366512DEST_PATH_IMAGE234
, the choke pressure of compression valve throttle hole when calculating is driven valve for the first time
Figure 527366DEST_PATH_IMAGE142
, that is:
Figure 210850DEST_PATH_IMAGE148
=7.4362
Figure DEST_PATH_IMAGE236
；
(8) design of the spacing back-up ring curve form of compression valve of shock absorber:
The height of back-up ring inner circle spacing according to compression valve of shock absorber y 0=5.0mm, in step (1) h e=0.16355mm, in step (2)
Figure 265394DEST_PATH_IMAGE150
, in step (6)
Figure 101763DEST_PATH_IMAGE134
=1.3198 * 10 6Pa, and in step (7)
Figure 608968DEST_PATH_IMAGE142
=7.4362
Figure 556195DEST_PATH_IMAGE236
, to the spacing back-up ring curve form of compression valve of shock absorber y r Design, that is:
Figure 730825DEST_PATH_IMAGE152
；
Design the spacing back-up ring curve form of resulting compression valve of shock absorber, as shown in Figure 7.
Utilize the electro-hydraulic servo vibration damper comprehensive performance test bed, the vibration damper model machine of designed processing is carried out characteristic test, measured vibration damper speed characteristic curve as shown in Figure 8.
By Fig. 8 and Fig. 5 as can be known, test measured vibration damper compression stroke maximum and open the valve speed characteristics, with desired the matching of design, illustrate that the spacing back-up ring curve form of this compression valve of shock absorber design load is reliably, shows that the design method of the spacing back-up ring curve form of vehicle shock absorber compression valve of setting up is correct.
Embodiment two: certain vibration damper is not except compression valve seat hole and embodiment one identical, and other structural parameter and fluid parameter are all identical with embodiment one, wherein, and the diameter in compression valve seat hole d hy=2.0mm, number n hy=6; Thickness and the sheet number of compression stack valve block are h 1=0.10mm, n 1=2; h 2=0.15mm, n 2=2; The desired speed characteristics of absorber designing, as shown in Figure 9, wherein, the valve speed of opening for the first time of compression stroke V k1y=0.10m/s opens the valve damping force for the first time F Dk1y=180N, maximum is opened valve speed V k2y=1.0m/s, maximum is opened the valve damping force F Dk2y=700N.
Adopt embodiment one design procedure, the spacing back-up ring curve form of this compression valve of shock absorber is designed, that is:
(1) determine the equivalent thickness of compression valve of shock absorber stack valve block h e:
According to thickness and the sheet number of compression valve stack valve block be h 1=0.10mm, n 1=2; h 2=0.15mm, n 2=2; Determine the equivalent thickness of compression valve of shock absorber stack valve block
Figure 65991DEST_PATH_IMAGE208
, for:
Figure 201437DEST_PATH_IMAGE210
=0.2061mm；
(2) compression valve block meaning radius in office rThe position deformation coefficient G r Calculating:
Because structural parameter, the material characteristic parameter of compression valve of shock absorber sheet are identical with embodiment's one, therefore, this compression valve of shock absorber sheet is at any radius rThe position deformation coefficient G r , also identical with embodiment one, as shown in Figure 6;
(3) calculate the choke pressure that compression stroke is opened valve and maximum flowing valve when driving valve for the first time p lk1 , p lk2 :
Shown in Figure 4 according to the oil circuit that vibration damper is opened after valve for the first time, the piston bore internal diameter
Figure 811410DEST_PATH_IMAGE100
=28mm, diameter of piston rod d g=20mm, the piston gap
Figure 715912DEST_PATH_IMAGE102
=0.04mm, gap length
Figure 753138DEST_PATH_IMAGE104
=9mm, the piston eccentricity
Figure 375881DEST_PATH_IMAGE106
=1.0, the fluid kinetic viscosity
Figure 258386DEST_PATH_IMAGE170
, fluid density
Figure 142029DEST_PATH_IMAGE168
, rebuilt valve normal open hole area
Figure 22260DEST_PATH_IMAGE112
=0.8mm 2, flow coefficient =0.62; The circulation throttle slice thickness h l =0.1mm, exradius
Figure 818495DEST_PATH_IMAGE116
=11.0mm, the valve port radius
Figure 694659DEST_PATH_IMAGE118
=10.5mm, the deformation coefficient of valve port radius
Figure 73688DEST_PATH_IMAGE194
7.72
Figure 998919DEST_PATH_IMAGE196
Figure 629751DEST_PATH_IMAGE198
, and open for the first time valve speed
Figure 894510DEST_PATH_IMAGE122
=0.1m/s, the choke pressure of the flowing valve when setting up compression stroke and driving valve for the first time p lk1 Equation, that is:
Figure 710020DEST_PATH_IMAGE232
；
Separate above-mentioned equation, just can obtain the choke pressure of the flowing valve when compression stroke is driven valve for the first time p lk1 =1.469 * 10 4Pa;
In like manner, with in equation V k1yWith p lk1 Use respectively V k2yWith p lk2 Replace choke pressure equation and the choke pressure of the flowing valve in the time of just can obtaining the compression stroke maximum and drive valve p lk2 =2.6737 * 10 4Pa;
The choke pressure in compression valve seat hole when (4) calculating maximum is driven valve p Hyk2:
According to diameter of piston rod d g=20mm, the diameter in compression valve seat hole
Figure 529071DEST_PATH_IMAGE126
=2.0mm and number
Figure 822649DEST_PATH_IMAGE128
=6, flow coefficient =0.62, fluid density
Figure 397167DEST_PATH_IMAGE168
, maximum is opened valve speed V k2y=1.0m/s, the choke pressure in compression valve seat hole when calculating vibration damper compression stroke maximum is driven valve p Hyk2, that is:
=3.2157×10 5 Pa；
(5) calculate the choke pressure in compression valve seat hole when driving valve for the first time p Hyk1:
According to diameter of piston rod d g=20mm, the diameter in compression valve seat hole
Figure 269625DEST_PATH_IMAGE126
=2.0mm and number
Figure 836873DEST_PATH_IMAGE128
=6, flow coefficient
Figure 869551DEST_PATH_IMAGE114
=0.62, fluid density
Figure 787828DEST_PATH_IMAGE168
, open for the first time the valve speed point V k1y=0.1m/s calculates the choke pressure in compression valve seat hole when opening valve point for the first time p Hyk1, be distributed as:
Figure 298575DEST_PATH_IMAGE132
=3.2157×10 3 Pa；
The choke pressure of compression valve throttle hole when (6) calculating maximum is driven valve :
Damping force when driving valve according to vibration damper compression stroke maximum
Figure 782963DEST_PATH_IMAGE136
=700N, the piston bore internal diameter D H=28mm, diameter of piston rod d g=20mm, in step (4)
Figure 795394DEST_PATH_IMAGE138
=3.2157 * 10 5Pa, and in step (3) p lk2 =2.6737 * 10 4Pa, the choke pressure of compression valve throttle hole when the calculating maximum is driven valve
Figure 500045DEST_PATH_IMAGE134
, that is:
Figure 917251DEST_PATH_IMAGE140
=1.8809×10 6Pa；
(7) calculate the choke pressure of compression valve throttle hole when driving valve for the first time
Figure 416365DEST_PATH_IMAGE142
:
According to the damper piston internal diameter of cylinder D H=28mm, diameter of piston rod d g=20mm opens the valve damping force for the first time
Figure 512497DEST_PATH_IMAGE144
=180N, in step (5)
Figure 365047DEST_PATH_IMAGE146
=3.2157 * 10 3Pa, and in step (3) p lk1 =1.469 * 10 4Pa, the choke pressure of compression valve throttle hole when calculating is driven valve for the first time , that is:
= 5.5564
Figure 686941DEST_PATH_IMAGE236
；
(8) design of the spacing back-up ring curve form of compression valve of shock absorber:
The height of back-up ring inner circle spacing according to compression valve of shock absorber y 0=5.0mm, in step (1) h e=0.2061mm, in step (2)
Figure 343181DEST_PATH_IMAGE150
, in step (6)
Figure 328455DEST_PATH_IMAGE134
=1.8809 * 10 6Pa, and in step (7)
Figure 169372DEST_PATH_IMAGE142
=5.5564
Figure 646621DEST_PATH_IMAGE236
, to the spacing back-up ring curve form of compression valve of shock absorber y r Design, that is:
Figure 231186DEST_PATH_IMAGE152
；
Design the spacing back-up ring curve form of resulting compression valve of shock absorber, as shown in figure 10.
Utilize the electro-hydraulic servo vibration damper comprehensive performance test bed, the vibration damper model machine of designed processing is carried out characteristic test, measured vibration damper speed characteristic curve as shown in figure 11.
By Figure 11 and Fig. 9 as can be known, test the maximum of measured vibration damper and open the valve speed characteristics, with desired the matching of design, illustrate that the spacing back-up ring curve form of this compression valve of shock absorber design load is reliably, shows that the design method of the spacing back-up ring curve form of vehicle shock absorber compression valve of setting up is correct.
Embodiment three: the structural parameter of certain vibration damper, fluid parameter all reach out the valve damping characteristic and require identical with embodiment two, and the structure of just compressing valve block is not identical with embodiment's two, compress the interior circle radius of valve block r ay=4.0mm, exradius r by=8.0mm, the valve port radius r ky=6.5mm.
Adopt embodiment two design procedure, this compression valve of shock absorber annular stack valve block is designed, that is:
(1) determine the equivalent thickness of compression valve of shock absorber stack valve block h e:
Identical according to the thickness of compression valve stack valve block and sheet number and embodiment two, therefore, equivalent thickness
Figure 70966DEST_PATH_IMAGE208
Also identical with embodiment two, that is:
Figure 958150DEST_PATH_IMAGE210
=0.2061mm；
(2) compression valve block meaning radius in office rThe position deformation coefficient G r Calculating:
Interior circle radius according to the compression valve block r a=3.8mm, exradius r b=8.0mm, the valve port radius r k=6.4mm, Young's modulus E=200GPa, compression valve block meaning radius in office is calculated in Poisson's ratio μ=0.3 rThe position deformation coefficient G r , that is:
；
Wherein,
Figure 45372DEST_PATH_IMAGE006
Figure 270817DEST_PATH_IMAGE008
，
Figure 922378DEST_PATH_IMAGE010
；
Figure 371290DEST_PATH_IMAGE012
=-5.12
Figure 297657DEST_PATH_IMAGE212
,
Figure 252975DEST_PATH_IMAGE014
=-0.0022,
Figure 872175DEST_PATH_IMAGE016
=-1.2856
Figure 545733DEST_PATH_IMAGE214
,
Figure 10212DEST_PATH_IMAGE216
=- 8.1249
Figure 679091DEST_PATH_IMAGE214
，
Figure 344559DEST_PATH_IMAGE020
=250， =-0.0402，
Figure 773583DEST_PATH_IMAGE024
=0.008，
Figure 828127DEST_PATH_IMAGE026
=2.56 ，
Figure 640542DEST_PATH_IMAGE028
=-1.0938
Figure 712403DEST_PATH_IMAGE220
， =-9.2536，
Figure 628724DEST_PATH_IMAGE032
=2.6，
Figure 498591DEST_PATH_IMAGE034
= 8.448
Figure 842984DEST_PATH_IMAGE212
；
Figure 872120DEST_PATH_IMAGE222
Figure DEST_PATH_IMAGE237
Figure 324660DEST_PATH_IMAGE040
=-2.9622
Figure 947403DEST_PATH_IMAGE196
，
Figure 361066DEST_PATH_IMAGE042
=- 7.6781
Figure 713550DEST_PATH_IMAGE224
，
Figure 766137DEST_PATH_IMAGE046
Figure 858858DEST_PATH_IMAGE048
Figure 65848DEST_PATH_IMAGE050
=- 2.9298 ；
Figure 42212DEST_PATH_IMAGE052
Figure 797678DEST_PATH_IMAGE054
Figure 531279DEST_PATH_IMAGE056
Figure 346788DEST_PATH_IMAGE058
Figure 928259DEST_PATH_IMAGE062
=- 1.8451
Figure 641000DEST_PATH_IMAGE230
，
Figure 502777DEST_PATH_IMAGE098
=1.416 ；
Calculate resulting compression valve block meaning radius in office rThe position deformation coefficient G r Curve, as shown in figure 12;
(3) calculate the choke pressure that compression stroke is opened valve and maximum flowing valve when driving valve for the first time p lk1 , p lk2 :
Open valve characteristic because absorber designing is desired, identical with embodiment two, therefore, vibration damper indention journey is opened the choke pressure of valve and maximum flowing valve when driving valve for the first time p lk1 , p lk2 Also identical with embodiment two, that is:
The choke pressure of the flowing valve when the vibration damper compression stroke is driven valve for the first time p lk1 =1.469 * 10 4Pa;
Choke pressure equation and the choke pressure of the flowing valve when maximum is driven valve p lk2 =2.6737 * 10 4Pa;
The choke pressure in compression valve seat hole when (4) calculating maximum is driven valve p Hyk2
Because the diameter in the structure of vibration damper, compression valve seat hole and number, fluid characteristic, vibration damper compression stroke are opened the designing requirement of valve speed characteristics, identical with embodiment two all, therefore, the choke pressure in compression valve seat hole when the compression stroke maximum of this vibration damper is driven valve p Hyk2Also identical with embodiment two, that is:
Figure 903464DEST_PATH_IMAGE130
=3.2157×10 5 Pa；
(5) calculate the choke pressure in compression valve seat hole when driving valve for the first time p Hyk1:
The choke pressure in compression valve seat hole when driving valve for the first time p Hyk1, identical with embodiment two, that is:
Figure 939553DEST_PATH_IMAGE132
=3.2157
Figure 96865DEST_PATH_IMAGE234
；
The choke pressure of compression valve throttle hole when (6) calculating maximum is driven valve :
Due to the structure of vibration damper, open the identical of valve damping characteristic and embodiment two, therefore, the choke pressure of the compression valve throttle hole when this vibration damper compression stroke maximum is driven valve
Figure 525889DEST_PATH_IMAGE134
Also identical with embodiment two, that is:
=1.8809×10 6Pa；
(7) calculate the choke pressure of compression valve throttle hole when driving valve for the first time
Figure 416802DEST_PATH_IMAGE142
:
The choke pressure of compression valve throttle hole when driving valve for the first time
Figure 25638DEST_PATH_IMAGE142
, identical with embodiment two, that is:
Figure 871234DEST_PATH_IMAGE148
=5.5564
Figure 288440DEST_PATH_IMAGE236
；
(8) design of the spacing back-up ring curve form of compression valve of shock absorber:
The height of back-up ring inner circle spacing according to compression valve of shock absorber y 0=5.0mm, in step (1) h e=0.2061mm, in step (2)
Figure 787554DEST_PATH_IMAGE150
, in step (6)
Figure 883686DEST_PATH_IMAGE134
=1.8809 * 10 6Pa, and in step (7)
Figure 1815DEST_PATH_IMAGE142
=5.5564
Figure 663741DEST_PATH_IMAGE236
, to the spacing back-up ring curve form of compression valve of shock absorber y r Design, that is:
Figure 209123DEST_PATH_IMAGE152
；
Design the spacing back-up ring curve form of resulting compression valve of shock absorber, as shown in figure 13.

Claims (2)

1. the design method of the spacing back-up ring curve form of vehicle shock absorber compression valve, its concrete steps are as follows:
(1) determine the equivalent thickness of compression valve of shock absorber stack valve block h e:
According to the thickness of compression valve stack valve block and sheet number ( h 1, n 1 h 2, n 2 h n, n n), determine the equivalent thickness of compression valve of shock absorber stack valve block
Figure 2013100821278100001DEST_PATH_IMAGE002
;
(2) compression valve block meaning radius in office rThe position deformation coefficient G r Calculating:
Interior circle radius according to the compression valve block r a, exradius r b, the valve port radius r k, Young's modulus E, Poisson's ratio μ calculates compression valve block meaning radius in office rThe position deformation coefficient G r , that is:
Figure 2013100821278100001DEST_PATH_IMAGE004
；
Wherein,
Figure 2013100821278100001DEST_PATH_IMAGE008
，
Figure 2013100821278100001DEST_PATH_IMAGE010
；
, ,
Figure 2013100821278100001DEST_PATH_IMAGE016
,
，
Figure 2013100821278100001DEST_PATH_IMAGE020
，
Figure 2013100821278100001DEST_PATH_IMAGE022
，
Figure 2013100821278100001DEST_PATH_IMAGE024
，
Figure 2013100821278100001DEST_PATH_IMAGE026
，
Figure 2013100821278100001DEST_PATH_IMAGE028
， ，
Figure 2013100821278100001DEST_PATH_IMAGE032
，
Figure 2013100821278100001DEST_PATH_IMAGE034
；
Figure 2013100821278100001DEST_PATH_IMAGE036
Figure 2013100821278100001DEST_PATH_IMAGE038
Figure 2013100821278100001DEST_PATH_IMAGE040
，
，
Figure 2013100821278100001DEST_PATH_IMAGE044
Figure 2013100821278100001DEST_PATH_IMAGE046
Figure 2013100821278100001DEST_PATH_IMAGE048
Figure 2013100821278100001DEST_PATH_IMAGE050
Figure 2013100821278100001DEST_PATH_IMAGE052
Figure 2013100821278100001DEST_PATH_IMAGE054
Figure 2013100821278100001DEST_PATH_IMAGE056
Figure 2013100821278100001DEST_PATH_IMAGE058
Figure 2013100821278100001DEST_PATH_IMAGE062
，
Figure 2013100821278100001DEST_PATH_IMAGE064
Figure 2013100821278100001DEST_PATH_IMAGE066
Figure 2013100821278100001DEST_PATH_IMAGE068
，
Figure 2013100821278100001DEST_PATH_IMAGE070
，
Figure 2013100821278100001DEST_PATH_IMAGE072
Figure 2013100821278100001DEST_PATH_IMAGE074
Figure 2013100821278100001DEST_PATH_IMAGE076
Figure DEST_PATH_IMAGE078
，
Figure DEST_PATH_IMAGE082
Figure DEST_PATH_IMAGE084
Figure DEST_PATH_IMAGE086
Figure DEST_PATH_IMAGE088
Figure DEST_PATH_IMAGE090
Figure 2013100821278100001DEST_PATH_IMAGE092
Figure 2013100821278100001DEST_PATH_IMAGE094
Figure 2013100821278100001DEST_PATH_IMAGE096
，
Wherein,
Figure 2013100821278100001DEST_PATH_IMAGE098
(3) calculate the choke pressure that compression stroke is opened valve and maximum flowing valve when driving valve for the first time p lk1 , p lk2 :
Open for the first time oil circuit after valve, piston diameter according to compression valve of shock absorber
Figure 2013100821278100001DEST_PATH_IMAGE100
, diameter of piston rod d g, the piston gap , gap length
Figure 2013100821278100001DEST_PATH_IMAGE104
, the piston eccentricity
Figure DEST_PATH_IMAGE106
, the fluid kinetic viscosity
Figure DEST_PATH_IMAGE108
, fluid density , rebuilt valve normal open hole area
Figure DEST_PATH_IMAGE112
, flow coefficient
Figure DEST_PATH_IMAGE114
, the circulation throttle slice thickness h l , exradius
Figure DEST_PATH_IMAGE116
, the valve port radius
Figure DEST_PATH_IMAGE118
, valve port radius deformation coefficient
Figure DEST_PATH_IMAGE120
, and open for the first time valve speed
Figure DEST_PATH_IMAGE122
, the choke pressure of the flowing valve when setting up compression stroke and driving valve for the first time p lk1 Equation, that is:
；
Separate above-mentioned equation, just can obtain the choke pressure of the flowing valve when compression stroke is driven valve for the first time p lk1
In like manner, with in equation V k1yWith p lk1 Use respectively V k2yWith p lk2 Replace choke pressure equation and the choke pressure of the flowing valve in the time of just can obtaining the compression stroke maximum and drive valve p lk2 Value;
The choke pressure in compression valve seat hole when (4) calculating maximum is driven valve p Hyk2:
Open valve speed according to maximum V k2y, diameter of piston rod d g, the diameter in compression valve seat hole And number , flow coefficient
Figure 617883DEST_PATH_IMAGE114
, fluid density
Figure 548492DEST_PATH_IMAGE110
, the choke pressure in compression valve seat hole when calculating vibration damper compression stroke maximum is driven valve p Hyk2, that is:
Figure DEST_PATH_IMAGE130
；
(5) calculate the choke pressure in compression valve seat hole when driving valve for the first time p Hyk1:
According to diameter of piston rod d g, the diameter in compression valve seat hole
Figure 471449DEST_PATH_IMAGE126
And number
Figure 312366DEST_PATH_IMAGE128
, flow coefficient
Figure 524035DEST_PATH_IMAGE114
, fluid density
Figure 577442DEST_PATH_IMAGE110
, open for the first time the valve speed point V k1y, calculate the choke pressure in compression valve seat hole when opening valve point for the first time p Hyk1, be distributed as:
；
The choke pressure of compression valve throttle hole when (6) calculating maximum is driven valve
Figure DEST_PATH_IMAGE134
:
Damping force when driving valve according to vibration damper compression stroke maximum
Figure DEST_PATH_IMAGE136
, the piston bore internal diameter D H, diameter of piston rod d g, in step (4)
Figure DEST_PATH_IMAGE138
, and in step (3) p lk2 , the choke pressure of compression valve throttle hole when the calculating maximum is driven valve
Figure 823747DEST_PATH_IMAGE134
, that is:
Figure DEST_PATH_IMAGE140
(7) calculate the choke pressure of compression valve throttle hole when driving valve for the first time
Figure DEST_PATH_IMAGE142
:
According to the piston bore internal diameter D H, diameter of piston rod d g, open for the first time the valve damping force , in step (5)
Figure DEST_PATH_IMAGE146
, and in step (3) p lk1 , the choke pressure of compression valve throttle hole when calculating is driven valve for the first time
Figure 179773DEST_PATH_IMAGE142
, that is:
Figure DEST_PATH_IMAGE148
(8) design of the spacing back-up ring curve form of compression valve of shock absorber:
The height of back-up ring inner circle spacing according to compression valve of shock absorber y 0, in step (1) h e, in step (2)
Figure DEST_PATH_IMAGE150
, in step (6)
Figure 79071DEST_PATH_IMAGE134
, and in step (7)
Figure 201748DEST_PATH_IMAGE142
, to the spacing back-up ring curve form of compression valve of shock absorber y r Design, that is:
Figure DEST_PATH_IMAGE152
。
According to claim 1 described in the step (8) of method, it is characterized in that: according to the equivalent thickness of vibration damper stack valve block, the deformation coefficient of valve port radial position, the compression valve throttle hole is opening for the first time valve and maximum choke pressure when driving valve, to the spacing back-up ring curve form of compression valve of shock absorber y r Design.
CN2013100821278A 2013-03-15 2013-03-15 Design method of vehicle damper compression valve limiting checking ring curved surface shape Pending CN103133590A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109707579A (en) * 2018-12-14 2019-05-03 常熟理工学院 A kind of the damper power generator and its control mode of recoverable automobile vibrational energy

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Publication number Priority date Publication date Assignee Title
CN102841959A (en) * 2012-07-17 2012-12-26 山东理工大学 Method for calculating deformation of throttle valve disc of hydraulic damper combination valve under action force of spiral spring

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CN102841959A (en) * 2012-07-17 2012-12-26 山东理工大学 Method for calculating deformation of throttle valve disc of hydraulic damper combination valve under action force of spiral spring

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Publication number Priority date Publication date Assignee Title
CN109707579A (en) * 2018-12-14 2019-05-03 常熟理工学院 A kind of the damper power generator and its control mode of recoverable automobile vibrational energy

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Application publication date: 20130605