CN102954142A - Bidirectional hydraulic limit damper - Google Patents
Bidirectional hydraulic limit damper Download PDFInfo
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- CN102954142A CN102954142A CN2011102459244A CN201110245924A CN102954142A CN 102954142 A CN102954142 A CN 102954142A CN 2011102459244 A CN2011102459244 A CN 2011102459244A CN 201110245924 A CN201110245924 A CN 201110245924A CN 102954142 A CN102954142 A CN 102954142A
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- bottom valve
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- piston
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- 230000002457 bidirectional effect Effects 0.000 title description 4
- 238000013016 damping Methods 0.000 claims abstract description 61
- 230000006835 compression Effects 0.000 claims abstract description 53
- 238000007906 compression Methods 0.000 claims abstract description 53
- 239000006096 absorbing agent Substances 0.000 claims abstract description 11
- 230000035939 shock Effects 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000011084 recovery Methods 0.000 abstract description 19
- 239000000725 suspension Substances 0.000 abstract description 6
- 239000010727 cylinder oil Substances 0.000 abstract 2
- 239000003921 oil Substances 0.000 abstract 1
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
本发明涉及一种用于汽车悬架上的双向液压限位减震器，该减震器包括：双筒油缸、活塞装置、底阀装置，所述的双筒油缸上的导向器下端带有一个复原限位套管；活塞装置上的活塞体上端带有一个复原限位椎体，活塞杆上的流通阀通道上带有补油孔，补油孔与工作缸连通；所述的底阀装置包括设置在工作缸下面的底阀座和底阀盖，设置在底阀盖内的套装有底阀弹簧上的底阀体，设置在底阀体下面的压缩阀片和阀盖，设置在底阀体中心孔内的压缩限位阻尼轴，在底阀体中心孔的下面、压缩限位阻尼轴和阀盖之间的腔体内设置有钢珠，阀盖、底阀体、压缩限位阻尼轴和钢珠组装后构成了一个压缩限位单向阀。
The invention relates to a two-way hydraulic limit shock absorber used on the suspension of automobiles. The shock absorber includes: a double cylinder oil cylinder, a piston device and a bottom valve device. The lower end of the guide on the double cylinder oil cylinder has a A recovery limit sleeve; the upper end of the piston body on the piston device has a recovery limit cone, and the flow valve channel on the piston rod has an oil supply hole, which communicates with the working cylinder; the bottom valve The device includes a bottom valve seat and a bottom valve cover arranged under the working cylinder, a bottom valve body set on the bottom valve spring set in the bottom valve cover, a compression valve plate and a valve cover arranged under the bottom valve body, and set on The compression limit damping shaft in the center hole of the bottom valve body is provided with steel balls under the center hole of the bottom valve body, in the cavity between the compression limit damping shaft and the bonnet, and the bonnet, bottom valve body, compression limit damping The assembled shaft and ball form a compression limit check valve.
Description
Technical field
The present invention relates to a kind of for the double-drum type vibration damper on the automotive suspension, a kind of Bidirectional hydraulic limit shock absorber specifically.
Background technique
The run distance caging device (buffer stopper) of being made by rubber is housed on the automotive suspension usually, and the associated components such as vehicle body, suspension is subject to strong bump when being used for preventing large-amplitude vibration.There is a serious shortcoming in this structure that plays position-limiting action by elasticity, is exactly that the energy that absorbs of its compressive strain can discharge in ensuing recovery stroke, thereby can not sponges rapidly impact.
At present, be widely used in the vibration damper on the automotive suspension, its resistance depends on up and down connecting end speed of related movement usually, and damping force and stroke have nothing to do and only and velocity correlation.Speed of related movement is very little when extreme limit of travel, thereby the damping that produces is also very little, does not produce enough large spacing power.Common bottom valve of shock absorber structure by all-in-one-piece bottom valve body and on valve block consist of, the bottom valve body is connected on the clutch release slave cylinder and can not moves radially.
The adaptive damping rear shock absorber (patent No. 200420079303.9) of existing a kind of internal airbag has been explained a kind of vibration damper of the compression damping that can change, but there is some major defect in actual applications in this structure, one, changes at its compression damping until can be because damping shaft stops up the piston flowing valve before the maximum value, cause the not enough vacuum that produces of vibration damper rod chamber repairing, the generation of vacuum can make the vibration damper indicator diagram produce idle running, has a strong impact on the life-span of vehicle ride comfort and vibration damper itself.Two, its bottom valve and damping shaft are for being fixedly connected on the vibration damper bottom, piston produces wearing and tearing in the vibration damper using process, radial clearance strengthens, piston inevitably can produce certain radial deflection, in the situation that damping shaft is fixing, gently then accelerate the damping shaft wearing and tearing, heavy then damping shaft can't cooperate smoothly with the damping core retainer plate makes damping shaft produce bending.Three, its bottom valve is provided with oil through and compression valve block, damping shaft stop up the piston flowing valve at present cavity pressure can't promote in a large number (because oil can release from the bottom valve valve block), can only make on this structure theory compression damping produce piston area and piston rod area only than lifting, and because rodless cavity pressure can't obviously promote, compression damping can't be controlled easily.
Two kinds nothing more than of the recovery limit methods of existing vibration damper inside, damping rubber block or damping spring, these two kinds of limit methods all only play and relax the effect of impacting, and can not sponge and impact the energy that produces, and can turn back to these energy in the system in backhaul.Seem particularly important therefore design a kind of shock absorber structure that restores the impact energy in the stroke that effectively absorbs.
At present vibration damper is because structure is limit, and the rebuilt valve passage all is distributed in interior ring and the flowing valve passage is distributed in the piston outer shroud on the piston, and this is difficult to realization so that restore hydraulic stop.
Summary of the invention
The objective of the invention is to provide a kind of vehicle body that when improving the car load smoothness, limits to cross the mode of violent oscillatory motion, can regulate simultaneously compression damping and recovery damping and adjustable degree large, the work of mating for vibration damper and car load provides a kind of new thinking, in the time of by suitable reduction normal travel damping, utilize the damping that changes with stroke to control acceleration and the moving stroke of suspension of vehicle body.
The object of the present invention is achieved like this, and this vibration damper comprises: bitubular oil cylinder, piston apparatus, bottom valve device, and limit casing is restored with one in the guider lower end on the described bitubular oil cylinder; Spacing centrum is restored with one in piston body upper end on the piston apparatus, and with the repairing hole, the repairing hole is communicated with clutch release slave cylinder on the flowing valve passage on the piston rod; Described bottom valve device comprises foot valve seat and the bottom valve lid that is arranged on below the clutch release slave cylinder, be arranged on the bottom valve body on the bottom valve spring of being set with in the bottom valve lid, be arranged on compression valve block and valve gap below the bottom valve body, be arranged on the compression limit damping axle in the bottom valve body center hole, be provided with steel ball in the cavity below bottom valve body center hole, between compression limit damping axle and the valve gap, consisted of a compression spacing one-way valve after valve gap, bottom valve body, compression limit damping axle and the steel ball assembling.
The present invention has the following advantages and good effect:
1, the energy that absorbs by damping restriction stroke of the present invention changes heat energy into and distributes, thus significantly attenuation vibration.
2, the present invention changes the bottom valve device structure of common double-drum type vibration damper, use the floated bottom valve body with hollow shaft to replace common fixing bottom valve structure, wherein do not establish damping hole on the bottom valve device, oil all enters bottom valve device by hollow shaft during compression stroke.Piston can block the damping shaft endoporus and make the rodless cavity sealing when compression stroke is larger, and compression damping increases, until rodless cavity thoroughly seals, compression damping becomes infinity in theory.And then formation compression position-limiting action.After hollow shaft and piston circulation valve passage cooperates, the unidirectional Fill valve of hollow shaft below is opened, utilize the pull of vacuum of rod chamber that it is carried out repairing, and Floating bottom valve device can carry out trace move radially offset trace skew bring that two axial lines might produce to the infringement of hollow shaft and unnecessary friction, with the raising vibration damper life-span.
3, the present invention proposes a kind of novel double-drum type vibration damper piston structure, comprise the flowing valve passage in the piston rod, entrance is at the rebuilt valve of outer shroud, and piston top be used for restoring spacing cone, the spacing cone of recovery when the recovery stroke is larger on the piston can cooperate with the recovery limit casing of guider bottom, block the piston valve damping hole, recovery damping force is increased, and form the recovery position-limiting action.
4, bottom valve body integral body of the present invention can be carried out moving radially of trace, effect is when hollow shaft cooperates with piston circulation valve passage when compression is spacing, can carry out trace move radially offset trace skew bring that two axial lines might produce to the infringement of hollow shaft and unnecessary friction, with the raising vibration damper life-span.
5, the present invention compress limit damping axle (hollow shaft) but the bottom is provided with the Fill valve of one-way flow, its role is to when piston stops that the spacing hollow shaft of compression forms the spacing power of compression, endoporus by hollow shaft carries out repairing to restoring the chamber, in order to avoid ensuing recovery stroke forms idle running.
6, the present invention compresses the limit damping axle and can be processed into different taperings, and resistance power is changed on demand.
Description of drawings
Fig. 1 is the overall structure schematic diagram of Bidirectional hydraulic limit shock absorber.
Fig. 2 is the local structure for amplifying schematic diagram of bottom valve device part of the present invention.
Fig. 3 is the laboratory data indicator diagram of the present invention in stand test.
Embodiment
Shown in accompanying drawing 1:
1., guider 14, loam cake 15, oil sealing 19,0 type circle 20, oil storage cylinder 21, clutch release slave cylinder 29 and 30 assemblings of lower hanger consist of bitubular oil cylinders, wherein limit casing 13 is restored with one in guider 14 lower ends;
2., rebuilt valve spring 9, recovery valve block lid 10,0 type circle 11, piston body 12, dust-proof cover 16, compression cushion pad 17, lower end consist of piston apparatus with piston rod 18, flowing valve valve block 23, piston ring 24, piston tightening nut pad 25, the valve block 26 that resets, piston tightening nut 27 and the upper hanger 31 of flowing valve passage 8, wherein spacing centrum 22 is restored with one in piston body 12 upper ends, with repairing hole 33, repairing hole 33 is communicated with clutch release slave cylinder 29 on the flowing valve passage 8 on the piston rod 18;
Shown in accompanying drawing 2: bottom valve device comprises: be arranged on clutch release slave cylinder 29 following foot valve seat 3 and bottom valves and cover 5, be arranged on the bottom valve body 4 that is set with bottom valve spring 6 in the bottom valve lid 5, be arranged on compression valve block 2 and valve gap 1 below the bottom valve body 4, be arranged on the compression limit damping axle 7 in bottom valve body 4 center holes, described compression limit damping axle 7 is the hollow shaft with center hole 34, below bottom valve body 4 center holes, be provided with steel ball 28, valve gap 1 in the cavity between compression limit damping axle 7 and the valve gap 1, bottom valve body 4, consisted of a compression spacing one-way valve after compression limit damping axle 7 and steel ball 28 assemblings.
Adopt the mode of Spielpassung between described bottom valve body 4 and the bottom valve lid 5, purpose is when producing the trace skew between compression limit damping axle 7 and flowing valve passage 8 two axial lines, compression limit damping axle 7 can carry out trace move radially offset trace skew bring that two axial lines might produce to the infringement of compression limit damping axle 7 and unnecessary friction, with the raising vibration damper life-span.
Described compression limit damping axle 7 upper ends are the centrum parts with tapering, and compression damping changes controlled continuously with stroke in piston body 12 movement processes.
Restoring spacing cone 22 restores damping and changes controlled continuously with stroke in piston 12 movement processes.
Working principle:
Be arranged on the recovery limit casing 13 and the spacing cone 22 of recovery that is arranged on piston body 12 tops combination when the recovery stroke is larger of guider 14 bottoms, rod chamber 35 inner fluids are closed, oil liquid pressure in the chamber rises, and makes damping force become large, and then produces the recovery position-limiting action.
Compression limit damping axle 7 on the bottom valve device is when compression stroke is larger, and the flowing valve passage 8 compressed limit damping axles 7 on the stream piston rod 18 block, and the oil liquid pressure in the rodless cavity 36 rises, and makes damping force become large, and then produces the compression position-limiting action;
By having consisted of a compression spacing one-way valve after valve gap 1, bottom valve body 4, compression limit damping axle 7 and steel ball 28 assemblings, its role is to when piston body 12 damping contracting limit damping axles 7 form the spacing power of compression, center hole 34 by compression limit damping axle 7 carries out repairing in rod chamber 35, in order to avoid ensuing recovery stroke forms idle running.
Accompanying drawing 3 is the laboratory data (indicator diagram) of the present invention in stand test
The indicator diagram abscissa be piston 12 with respect to the displacement of bitubular oil cylinder, y coordinate is the ouput force of vibration damper, transverse axis top is for restoring stroke, the below is compression stroke.Relative velocity is sinusoidal variations in whole movement process, and peak value appears at transverse axis place at zero point.
Vibration damper restore stroke when reaching spacing position (b point place on the curve) be arranged on the recovery limit casing 13 of guider 14 bottoms and be arranged on spacing cone 22 combinations of recovery on piston body 12 tops, produce the spacing power of restoring.Be presented as that in laboratory data the vibration damper ouput force increases with displacement.
Vibration damper carry out compression stroke when reaching spacing position the flowing valve passage 8 compressed limit damping axles 7 on (a point place on the curve) stream piston rod 18 block, the oil liquid pressures in the rodless cavity 36 rise, and make damping force become large, and then produce the compression position-limiting action.Be presented as that in laboratory data the vibration damper ouput force increases with displacement.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110245924.4A CN102954142B (en) | 2011-08-25 | 2011-08-25 | bidirectional hydraulic limit shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110245924.4A CN102954142B (en) | 2011-08-25 | 2011-08-25 | bidirectional hydraulic limit shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN102954142A true CN102954142A (en) | 2013-03-06 |
| CN102954142B CN102954142B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110245924.4A Active CN102954142B (en) | 2011-08-25 | 2011-08-25 | bidirectional hydraulic limit shock absorber |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382327A (en) * | 2016-11-25 | 2017-02-08 | 广东技术师范学院 | Resonance-peak-free hydraulic vibration isolator and vibration reducing module thereof |
| CN106523574A (en) * | 2016-10-13 | 2017-03-22 | 湖南大学 | Multiple operating condition damping self-adaption hydro-pneumatic spring and control method thereof |
| CN109798321A (en) * | 2019-02-21 | 2019-05-24 | 浙江戈尔德减振器股份有限公司 | The external bidirectional damper regulating valve of automobile absorber |
| CN111971488A (en) * | 2018-04-27 | 2020-11-20 | 天纳克汽车经营有限公司 | Damper bumper cover with labyrinth air passage |
| CN112984027A (en) * | 2021-04-16 | 2021-06-18 | 吉林大学 | Damping-controllable bidirectional-acting cylinder type shock absorber piston |
| CN113819179A (en) * | 2021-09-30 | 2021-12-21 | 四川宁江山川机械有限责任公司 | Compression hydraulic buffer structure of a shock absorber |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4624346A (en) * | 1983-07-20 | 1986-11-25 | Creusot-Loire | Multi-ratio hydraulic energy dissipater |
| JPH06101735A (en) * | 1992-09-17 | 1994-04-12 | Tokico Ltd | Hydraulic shock absorber |
| KR20020040313A (en) * | 2000-11-24 | 2002-05-30 | 밍 루 | Stopper of a shock absorber |
| CN1554875A (en) * | 2003-12-29 | 2004-12-15 | 杰 陆 | Damper after changing damp |
| CN2931926Y (en) * | 2006-01-20 | 2007-08-08 | 陆凯 | Variable damping oil/gas separated shock absorber |
| CN200971945Y (en) * | 2006-11-21 | 2007-11-07 | 陆凯 | Double-changed damping shock-absorber |
| CN202194990U (en) * | 2011-08-25 | 2012-04-18 | 长春孔辉汽车科技有限公司 | Bidirectional hydraulic limiting shock absorber |
-
2011
- 2011-08-25 CN CN201110245924.4A patent/CN102954142B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4624346A (en) * | 1983-07-20 | 1986-11-25 | Creusot-Loire | Multi-ratio hydraulic energy dissipater |
| JPH06101735A (en) * | 1992-09-17 | 1994-04-12 | Tokico Ltd | Hydraulic shock absorber |
| KR20020040313A (en) * | 2000-11-24 | 2002-05-30 | 밍 루 | Stopper of a shock absorber |
| CN1554875A (en) * | 2003-12-29 | 2004-12-15 | 杰 陆 | Damper after changing damp |
| CN2931926Y (en) * | 2006-01-20 | 2007-08-08 | 陆凯 | Variable damping oil/gas separated shock absorber |
| CN200971945Y (en) * | 2006-11-21 | 2007-11-07 | 陆凯 | Double-changed damping shock-absorber |
| CN202194990U (en) * | 2011-08-25 | 2012-04-18 | 长春孔辉汽车科技有限公司 | Bidirectional hydraulic limiting shock absorber |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523574A (en) * | 2016-10-13 | 2017-03-22 | 湖南大学 | Multiple operating condition damping self-adaption hydro-pneumatic spring and control method thereof |
| CN106382327A (en) * | 2016-11-25 | 2017-02-08 | 广东技术师范学院 | Resonance-peak-free hydraulic vibration isolator and vibration reducing module thereof |
| CN111971488A (en) * | 2018-04-27 | 2020-11-20 | 天纳克汽车经营有限公司 | Damper bumper cover with labyrinth air passage |
| CN109798321A (en) * | 2019-02-21 | 2019-05-24 | 浙江戈尔德减振器股份有限公司 | The external bidirectional damper regulating valve of automobile absorber |
| CN109798321B (en) * | 2019-02-21 | 2024-04-12 | 浙江戈尔德智能悬架股份有限公司 | External two-way damping regulating valve of automobile shock absorber ware |
| CN112984027A (en) * | 2021-04-16 | 2021-06-18 | 吉林大学 | Damping-controllable bidirectional-acting cylinder type shock absorber piston |
| CN113819179A (en) * | 2021-09-30 | 2021-12-21 | 四川宁江山川机械有限责任公司 | Compression hydraulic buffer structure of a shock absorber |
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| Publication number | Publication date |
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| CN102954142B (en) | 2016-03-23 |
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Effective date of registration: 20230802 Address after: 313000 Building 1, No. 788 Xifeng Road, South Taihu New District, Wuxing District, Huzhou City, Zhejiang Province Patentee after: Zhejiang Kong Hui Automobile Technology Co.,Ltd. Address before: No. 5177 Chaoda Road, High tech Industrial Development Zone, Changchun City, Jilin Province, 130012 Patentee before: KH AUTOMOTIVE TECHNOLOGIES (CHANGCHUN) CO.,LTD. |
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Address after: 313000 Building 1, No. 788 Xifeng Road, South Taihu New District, Wuxing District, Huzhou City, Zhejiang Province Patentee after: Zhejiang Konghui Automotive Technology Co.,Ltd. Country or region after: China Address before: 313000 Building 1, No. 788 Xifeng Road, South Taihu New District, Wuxing District, Huzhou City, Zhejiang Province Patentee before: Zhejiang Kong Hui Automobile Technology Co.,Ltd. Country or region before: China |