CN104251277A - Large-connecting-rod two-grade buffering shock absorber - Google Patents
Large-connecting-rod two-grade buffering shock absorber Download PDFInfo
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- CN104251277A CN104251277A CN201310266945.3A CN201310266945A CN104251277A CN 104251277 A CN104251277 A CN 104251277A CN 201310266945 A CN201310266945 A CN 201310266945A CN 104251277 A CN104251277 A CN 104251277A
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- clutch release
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- release slave
- slave cylinder
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Abstract
The invention discloses a large-connecting-rod two-grade buffering shock absorber. The large-connecting-rod two-grade buffering shock absorber comprises an inner working cylinder, a piston assembly arranged in the inner working cylinder, shock absorption oil, inert gas, a piston rod on a piston and a guiding device arranged at the upper part of the inner working cylinder, wherein a sealing dustproof cover and a sealing ring are arranged at the upper end of the guiding device; a piston buffering block is further arranged on the piston rod and is of a cylindrical structure; a gap is formed between the piston buffering block and the inner wall of the inner working cylinder; steel balls for guiding and positioning are embedded at the periphery of the outer side wall of the piston; an air guiding channel is arranged between the inner part and the outer part of the cylindrical structure of the piston buffering block; a working cylinder body is composed of a first cylinder body and a second cylinder body which are different in diameter; a transition section is arranged between the first cylinder body and the second cylinder body; oil grooves which are arrayed spirally are formed in the surface of a pipe body of the piston rod. Compared with the prior art, the movement of the piston is more flexible and the shock absorption performance is better; the large-connecting-rod two-grade buffering shock absorber is dustproof and has longer service life.
Description
Technical field
The present invention relates to a kind of vehicular shock absorber improving stability in vehicle travel process, be specifically related to a kind of big connecting rod two-stage buffer.
Background technique
At present, the vibration damper that automobile uses all belongs to hydraulic damper substantially, its principle is, when vehicle frame and vehicle bridge do reciprocal relative movement piston move back and forth in the cylinder barrel of vibration damper time, fluid in vibration damper housing just flows into another inner chamber from inner chamber by some narrow holes repeatedly, now, the friction of liquid and inwall and the interior friction of fluid molecule just form the damping force to vibrating.Vibration damper can be divided into two-cylinder type and single casing by its structure.Two-cylinder type refers to that vibration damper has inside and outside two cylinders, and piston moves in inner casing, and due to entering and extraction of piston rod, in inner casing, the volume of oil increases and contraction thereupon, therefore will by carrying out exchanging with outer shell the balance maintaining oil in inner core.So dual tube shock absorber is provided with valve.The balance that folding and unfolding keeps oil pressure in vibration damper is opened by valve, so just require that vibration damper in use can be in dynamically balanced state well, because the quality of vibration damper is large, connector element is complicated, performance requirement is strict, usually all often there is complicated structure characteristic and annexation be installed, also require simultaneously vibration damper install and use can be enough firm, to improve the Security of driving transport.
When vehicle jolt frequent and amplitude is larger time, the circulation of cylinder body internal damping oil fills up delayed, very easily occurs vacuum area in cylinder body, and piston can not work original lower position again, makes compression damping be increased to unallowable numerical value.And, easily there is noise and shake the abnormal sound sent, having a strong impact on damping effect.Chinese patent, the patent No. is 200620141855.7, the patented technology of " barrel type hydraulic shock absorber of band floating piston " by name, in the bottom of cylindrical shell, float piston device is installed, substantially the problems referred to above are solved, but this technology still exists shortcoming, the volume as being filled with pressurized gas is too small, and the vibration damper that can not adapt to big connecting rod uses.Chinese patent, the patent No. is 200820164650.x, " double-cylinder high-pressure vibration absorber " by name can adapt to the use of the vibration damper of big connecting rod, this patented solutions is: arrange floating piston in the chamber of interior clutch release slave cylinder, outside clutch release slave cylinder, gas cylinder is set, space between gas cylinder inwall with clutch release slave cylinder outer wall communicates with clutch release slave cylinder bottom, and whole clutch release slave cylinder bottom and the whole space of gas cylinder inwall between clutch release slave cylinder outer wall are filled with high-pressure inert gas.The main technology point of this patent is outside clutch release slave cylinder, add a gas cylinder, large by the volume of air chamber, ensures the stroke of air pressure, thus can meet the stroke of piston rod to greatest extent.When using the vehicle of this kind of vibration damper to meet continuous print bumpy sections, the shock-absorbing capacity of this vibration damper is subject to very big test, although damping performance is compared with having very large lifting before, but damping effect is partially hard, driver and passenger in operator cabin are done not feel like oneself, vibration damper internal damping performance need to improve, for Long Distances, and the space that big connecting rod Special shock absorber is also significantly improved.On this basis, the present inventor has applied for a kind of " a kind of high-pressure shock absorber of twin-tub band floating piston assembly " by name, comprise interior clutch release slave cylinder, piston assembly in interior clutch release slave cylinder, damping oil, inert gas, piston rod on piston, interior clutch release slave cylinder top arranges guider, guider upper end arranges sealing dust-proof cover and seal ring, at the outer clutch release slave cylinder of the outer installment of interior clutch release slave cylinder, floating piston assembly is set in the chamber of outer clutch release slave cylinder, the bottom section that the inwall of interior clutch release slave cylinder and outer clutch release slave cylinder is suitable arranges compression valve assembly, compression valve assembly inside arranges logical fuel tap sheet, it is through that interior clutch release slave cylinder and outer clutch release slave cylinder oil circuit make valve block open by damping force, the upper regional space that outer clutch release slave cylinder arranges floating piston assembly is full of inert gas, other regional space of interior clutch release slave cylinder and outer clutch release slave cylinder is full of damping oil.The advantage of this technological scheme is floating piston assembly to be arranged in outer clutch release slave cylinder chamber, increases the oil storage region of damping oil, thus meets the stroke of piston to greatest extent, is applicable to applying in the vibration damper of all size connecting rod.But still have shortcoming in practical application, mainly can produce gap owing to directly wearing and tearing between piston and cylinder sleeve, make oil from gap to outward leakage during work, its working effect is deteriorated, reduces working life.In addition, existing vibration damper is common existence shortcoming also, and because clutch release slave cylinder is cylinder type, connecting rod piston, when buffering hydraulic, can only carry out first-level buffer, therefore causes cushion effect inadequate, easily causes vehicle body strenuous vibration.
Summary of the invention
The object of the present invention is to provide a kind of big connecting rod two-stage buffer of new structure, not only piston movement is more soft for it, and damping performance is better, and is easy to dust-proof, and the life-span is longer.
For realizing this damping object, technological scheme of the present invention is: a kind of big connecting rod two-stage buffer, comprise interior clutch release slave cylinder, piston assembly in interior clutch release slave cylinder, damping oil, inert gas, piston rod on piston, interior clutch release slave cylinder top arranges guider, guider upper end arranges sealing dust-proof cover and seal ring, described piston rod also arranges buffer piston block, buffer piston block cylindrically structure, the inwall of buffer piston block and interior clutch release slave cylinder, leave gap, it is characterized in that: the surrounding of the outer side wall of described piston studs with the steel ball for guide-localization, air guide channel is provided with between the inside of the cylinder-like structure of described buffer piston block and outside, described working cylinder is made up of different the first cylinder body of diameter and the second cylinder body, changeover portion is provided with between first cylinder body and the second cylinder body, the pipe shaft surface of described piston rod is provided with the oil groove of helical row.
As improvement of the present invention, the outer clutch release slave cylinder of outer installment of described interior clutch release slave cylinder, arrange floating piston assembly in the chamber of outer clutch release slave cylinder, described floating piston assembly outer radius portion arranges at least one annular recess, groove location arranges O RunddichtringO, and O RunddichtringO fills full groove.
As improvement of the present invention, described buffer piston block is connected with a dust-proof cover.
As improvement of the present invention, the sidewall of described dust-proof lid is made up of isometrical section and converging transition, and isometrical section and converging transition joint formation limit point, form buffer cavity in the dust-proof lid at converging transition place.
Relative to prior art, the present invention makes piston and inboard wall of cylinder block not direct friction by studding with guide-localization steel ball in the outer side wall surrounding of piston, so piston and cylinder body are not easy to wear, and the hydraulic oil filled in cylinder body more can make moving up and down of the piston in vibration damper soft.Floating piston is equipped with O RunddichtringO, and object avoids gas and oil mixing phenomena, makes damping oil in work In-Cylinder Flow steady and smooth, improve the performance of vibration damper, extend the working life of vibration damper.Buffer piston block is set on the piston rod, stressed in working in reciprocating mode process of piston rod and piston can be shared, improve the performance of vibration damper, extend the working life of vibration damper.Set up dust-proof cover and improvement has been done to dust cover structure, and then having ensure that dust-proof effect, having further increased the damping performance of vibration damper.Be provided with the oil groove of helical row on the pipe shaft surface of piston rod, lubricant oil is fully expelled in the matching gap of piston rod and cylinder body, and lubrication effect is better.The more important thing is, described clutch release slave cylinder is two-level oil cylinder's composition, and connecting rod piston, when buffering hydraulic, can carry out level 2 buffering, and cushion effect is comparatively large, not easily causes vehicle body strenuous vibration.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Wherein: 1, interior clutch release slave cylinder; 2, damping oil; 3, piston; 4, piston rod; 5, guider; 6, sealing dust-proof cover; 7, seal ring; 8, outer clutch release slave cylinder; 9, inert gas; 10, compression valve assembly; 11, buffer piston block; 12, air-filled pore; 13, O RunddichtringO.
embodiment
The present invention is further described in conjunction with the embodiments with reference to the accompanying drawings.
As shown in Figure 1, a kind of big connecting rod two-stage buffer, comprise interior clutch release slave cylinder, piston assembly in interior clutch release slave cylinder, damping oil, inert gas, piston rod on piston, interior clutch release slave cylinder top arranges guider, guider upper end arranges sealing dust-proof cover and seal ring, described piston rod also arranges buffer piston block, buffer piston block cylindrically structure, the inwall of buffer piston block and interior clutch release slave cylinder, leave gap, it is characterized in that: the surrounding of the outer side wall of described piston studs with the steel ball for guide-localization, air guide channel is provided with between the inside of the cylinder-like structure of described buffer piston block and outside, described working cylinder is made up of different the first cylinder body of diameter and the second cylinder body, changeover portion is provided with between first cylinder body and the second cylinder body, the pipe shaft surface of described piston rod is provided with the oil groove of helical row.
Wherein, the outer clutch release slave cylinder of outer installment of described interior clutch release slave cylinder, arrange floating piston assembly in the chamber of outer clutch release slave cylinder, described floating piston assembly outer radius portion arranges at least one annular recess, and groove location arranges O RunddichtringO, and O RunddichtringO fills full groove.Described buffer piston block is connected with a dust-proof cover.The sidewall of described dust-proof lid is made up of isometrical section and converging transition, and isometrical section and converging transition joint formation limit point, form buffer cavity in the dust-proof lid at converging transition place.The inflation inlet place arranging the upper area of floating piston assembly outside in clutch release slave cylinder chamber is filled with inert gas, is sealed by air-filled pore after gas is full of.
Though it is pointed out that above-described embodiment to be contrasted detailed text description to the present invention, the simple description of these text descriptions just to mentality of designing of the present invention, instead of the restriction to thinking of the present invention.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (4)
1. a big connecting rod two-stage buffer, comprise interior clutch release slave cylinder, piston assembly in interior clutch release slave cylinder, damping oil, inert gas, piston rod on piston, interior clutch release slave cylinder top arranges guider, guider upper end arranges sealing dust-proof cover and seal ring, described piston rod also arranges buffer piston block, buffer piston block cylindrically structure, the inwall of buffer piston block and interior clutch release slave cylinder, leave gap, it is characterized in that: the surrounding of the outer side wall of described piston studs with the steel ball for guide-localization, air guide channel is provided with between the inside of the cylinder-like structure of described buffer piston block and outside, described working cylinder is made up of different the first cylinder body of diameter and the second cylinder body, changeover portion is provided with between first cylinder body and the second cylinder body, the pipe shaft surface of described piston rod is provided with the oil groove of helical row.
2. big connecting rod two-stage buffer according to claim 1, it is characterized in that, the outer clutch release slave cylinder of outer installment of described interior clutch release slave cylinder, floating piston assembly is set in the chamber of outer clutch release slave cylinder, described floating piston assembly outer radius portion arranges at least one annular recess, groove location arranges O RunddichtringO, and O RunddichtringO fills full groove.
3. big connecting rod two-stage buffer according to claim 2, is characterized in that, described buffer piston block is connected with a dust-proof cover.
4. big connecting rod two-stage buffer according to claim 3, is characterized in that, the sidewall of described dust-proof lid is made up of isometrical section and converging transition, and isometrical section and converging transition joint formation limit point, form buffer cavity in the dust-proof lid at converging transition place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266945.3A CN104251277A (en) | 2013-06-29 | 2013-06-29 | Large-connecting-rod two-grade buffering shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266945.3A CN104251277A (en) | 2013-06-29 | 2013-06-29 | Large-connecting-rod two-grade buffering shock absorber |
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| CN104251277A true CN104251277A (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310266945.3A Pending CN104251277A (en) | 2013-06-29 | 2013-06-29 | Large-connecting-rod two-grade buffering shock absorber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653687A (en) * | 2015-03-03 | 2015-05-27 | 刘春暄 | Double-cylinder active shock absorber |
| CN106246788A (en) * | 2016-08-26 | 2016-12-21 | 常州市莱特气弹簧有限公司 | Lockable air-leg |
| CN110614942A (en) * | 2019-09-24 | 2019-12-27 | 郝骞 | Automobile beam chair device with energy storage buffer structure |
| CN111042689A (en) * | 2019-11-27 | 2020-04-21 | 扬州市江都永坚有限公司 | Special buffer for heavy hydraulic opening and closing device |
-
2013
- 2013-06-29 CN CN201310266945.3A patent/CN104251277A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653687A (en) * | 2015-03-03 | 2015-05-27 | 刘春暄 | Double-cylinder active shock absorber |
| CN106246788A (en) * | 2016-08-26 | 2016-12-21 | 常州市莱特气弹簧有限公司 | Lockable air-leg |
| CN110614942A (en) * | 2019-09-24 | 2019-12-27 | 郝骞 | Automobile beam chair device with energy storage buffer structure |
| CN111042689A (en) * | 2019-11-27 | 2020-04-21 | 扬州市江都永坚有限公司 | Special buffer for heavy hydraulic opening and closing device |
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Application publication date: 20141231 |