CN201730890U - No-load/full-load self-adaptive pressure compensation type hydro-pneumatic suspension cylinder - Google Patents
No-load/full-load self-adaptive pressure compensation type hydro-pneumatic suspension cylinder Download PDFInfo
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- CN201730890U CN201730890U CN2010202145002U CN201020214500U CN201730890U CN 201730890 U CN201730890 U CN 201730890U CN 2010202145002 U CN2010202145002 U CN 2010202145002U CN 201020214500 U CN201020214500 U CN 201020214500U CN 201730890 U CN201730890 U CN 201730890U
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- lower oil
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Abstract
The utility model discloses a no-load/full-load self-adaptive pressure compensation type hydro-pneumatic suspension cylinder, which comprises a cylinder head, a cylinder barrel, a sealing holder ring, a piston rod, a piston, a plunger and the like. Three oil cavities including an upper oil cavity, a lower oil cavity and an auxiliary oil cavity are arranged in the suspension cylinder; in the cylinder barrel, a damping passage is arranged between the upper oil cavity and the lower oil cavity, a damping passage is arranged between the lower oil cavity and the auxiliary oil cavity; a one-way valve and a damping hole are disposed on the cylinder barrel, the auxiliary oil cavity is communicated with the lower oil cavity through an external passage to form a cylinder external damping passage; and positions of the one-way valve and the damping hole which are arranged on the cylinder barrel are within a travel position range from no-load to full-load of the suspension cylinder. During no-load and full-load of a vehicle, the suspension cylinder can automatically obtain different damping coefficients, and simultaneously, pressures of the lower oil cavity and the auxiliary oil cavity are compensated mutually, thereby reducing or eliminating negative pressure in a system, increasing stability and reliability of operation of the suspension cylinder system, and comprehensively improving technical level of the hydro-pneumatic suspension cylinder.
Description
Technical field
The utility model relates to a kind of suspension cylinder, discloses a kind of sky/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure specifically.
Background technique
The sky of prior art/fully loaded self adaption oleo-pneumatic suspension cylinder (patent No. ZL200820060583.7) is that the internal channel of being made up of one-way valve and damping hole is set on piston rod, and is provided with at least one external chennel in the cylinder barrel outside; Reached the control vehicle and when fully loaded and unloaded, had the purpose of obstructed damping, made suspension cylinder when vehicle is unloaded still fully loaded, all have preferable damping.And the pressure-compensated oleo-pneumatic suspension cylinder of prior art (application number 201020201923.0/201010181770.2; Annotate: the prior art for the applicant in first to file) for being provided with upper oil cavitie, lower oil cavitie, secondary oil pocket totally three oil pockets, be provided with damp channel between oil pocket, internal fixation is connected staying on the oleo-pneumatic suspension cylinder cylinder body and is provided with damping hole and one-way valve beyond the Great Wall, is communicated with upper oil cavitie, lower oil cavitie; At lower oil cavitie one end, damping hole and one-way valve are set on the sidewall between piston and the plunger, be communicated with lower oil cavitie, secondary oil pocket; This technology compensates the pressure of lower oil cavitie and secondary oil pocket mutually, has reduced or eliminated intrasystem negative pressure, has increased the stability and the reliability of outstanding cylinder system works.The aspect of performance that above prior art is improved suspension cylinder in integral body emphasizes particularly on different fields, but lacks integration function.
Summary of the invention
This model utility has proposed a kind of sky/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure, reaches to have sky/fully loaded self adaption and pressure compensation two specific characters concurrently; Can make vehicle under unloaded and full load condition, obtain required separately damping constant, obtain to have the sky/fully loaded self adaption oleo-pneumatic suspension cylinder of optimal vibration characteristic; Simultaneously can overcome or eliminate defectives such as the negative pressure, the damping constant that exist in original Technical Architecture are low again; And the characteristic of the two is superposeed and complementary the promotion, greatly the mechanical characteristic of the outstanding cylinder of amplitude lifting oil gas and working stability, reliability.
The utility model is to adopt following scheme to realize above-mentioned purpose: a kind of sky/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure comprises cylinder head, cylinder barrel, seal holder ring, piston rod, piston, stays plug; In the outstanding cylinder upper oil cavitie, lower oil cavitie, secondary oil pocket totally three oil pockets are set,, are provided with damp channel between upper oil cavitie, lower oil cavitie, be provided with damp channel between lower oil cavitie, secondary oil pocket in cylinder barrel inside; Upper oil cavitie fills hydraulic oil and nitrogen, fills hydraulic oil in lower oil cavitie, the secondary oil pocket; And also being provided with damp channel between lower oil cavitie and the secondary oil pocket in the cylinder barrel outside, the damp channel that is arranged on the cylinder barrel outside is made up of connecting passage, damping hole and one-way valve.
The described plug of staying is fixedly connected on the piston rod, stays and is provided with damping hole and one-way valve beyond the Great Wall, is communicated with upper oil cavitie, lower oil cavitie, forms the cylinder interior damp channel between upper oil cavitie and the lower oil cavitie; Described piston rod is provided with damping hole and one-way valve at lower oil cavitie one end on piston and the piston rod sidewall between filling in, and is communicated with lower oil cavitie, secondary oil pocket, forms the cylinder interior damp channel between lower oil cavitie and the secondary oil pocket; Cylinder barrel is provided with one-way valve and damping hole, by external channel being set from secondary oil pocket of external communications and lower oil cavitie, forms the outside damp channel of cylinder between lower oil cavitie and the secondary oil pocket.
The described location arrangements that is arranged on one-way valve on the cylinder barrel and damping hole is unloaded between the fully loaded travel position scope at suspension cylinder at piston.Be one-way valve and the damping hole that is provided with on the described cylinder barrel, in order to form the outside damp channel between lower oil cavitie and the secondary oil pocket.Described one-way valve and damping hole are arranged in the middle of suspension cylinder idle position and the fully loaded position, in order to discern working state of hanging cylinder and the connection of controlling external channel and to close; Described piston is provided with seal ring, is used to carry out the switching of external channel.Be that the outside damp channel of described cylinder only plays the connection effect within the partial journey position range of piston.
Piston rod and piston, stay modes such as the fixedly connected welding that is not limited to use always, bolt between plug is connected, jump ring, collar, pressing plate, gland; Cylinder head, cylinder barrel, seal holder ring are fixedly connected, as welding, bolt connection, jump ring, collar, pressing plate, gland etc.
Described sky/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure includes assemblies such as the conventional outstanding due seal ring of cylinder, dust ring, guidance tape and filling device, connection, installation, detection, protection.
The pressure-compensated oleo-pneumatic suspension cylinder of the utility model combination prior art and sky/fully loaded self adaption oleo-pneumatic suspension cylinder; At outstanding cylinder interior, construct the 3rd cavity volume, secondary oil pocket is carried out the compensation and the adjusting of pressure, reduce or eliminate the negative pressure in the secondary oil pocket; The damp channel of while between suspension cylinder outer installment lower oil cavitie and secondary oil pocket; Make suspension cylinder when vehicle is unloaded still fully loaded, all have preferable damping; This compound mode forms non-obvious component invention improving the suspension cylinder aspect of performance, makes the two support one another on function and complementary the promotion, and has obtained the brand-new technology effect; And the technique effect after the combination is compared each technical characteristics effect and is got a promotion, and has outstanding substantive distinguishing features and obvious improvement.
Running principle of the present utility model is: utilize vehicle zero load or full load, difference to the suspension cylinder decrement, judge the residing working condition of vehicle by the suspension cylinder position, has the outstanding cylinder sky of perception/fully loaded position, and have a function of regulating empty/fully loaded damping constant: promptly the vehicle full load to suspension cylinder compress deeply, vehicle compress when unloaded shallow this principle, vehicle-state and damping constant are discerned and are controlled.One-way valve on the suspension cylinder cylinder barrel and damping hole are arranged between suspension cylinder zero load and the fully loaded position.Be furnished with seal ring on the piston.When vehicle was in full load condition, piston and last seal ring thereof pressed down, and close the external channel between lower oil cavitie and the secondary oil pocket, only two inner passages work, and suspension cylinder shows bigger damping constant.When vehicle is in unloadedly when carrying state, piston and go up the seal ring come-up is connected the external channel between lower oil cavitie and the secondary oil pocket, and three damp channels are worked simultaneously, and suspension cylinder shows less damping constant.By on cylinder barrel, increasing external chennel, reach the control vehicle and when fully loaded and unloaded, have the purpose of different big or small damping constants, make suspension cylinder all have damping preferably at the unloaded still full load of vehicle; In this process, lower oil cavitie and secondary oil pocket cavity volume pressure keep synchronously compensation mutually, have reduced or eliminated intrasystem negative pressure, have increased the stability and the reliability of outstanding cylinder system works, and the enforcement of aforementioned sky/fully loaded adaptation function is also had promoting effect; Simultaneously, the enforcement of aforementioned sky/fully loaded adaptation function also promotes to some extent to the enforcement of this pressure-compensated function; The combination of the two provides a kind of further increase system damping coefficient, promotes the effective way of outstanding cylinder overall performance significantly.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is: suspension cylinder is at vehicle zero load and full load, can obtain damping constant required separately, that vary in size automatically, making suspension cylinder still is that full load all has good damping in zero load.The pressure of lower oil cavitie and secondary oil pocket compensates mutually, has reduced or eliminated intrasystem negative pressure appearance, has increased the stability and the reliability of outstanding cylinder system works.Empty/as to be fully loaded with self adaption and pressure-compensated oil nitrogen suspension cylinder Technical Architecture, promoted the technical merit of hydropneumatic suspension cylinder comprehensively.
Description of drawings
Fig. 1 the utility model sky/fully loaded compensation oleo-pneumatic suspension cylinder structure of self-adaptive pressure figure (zero load);
Fig. 2 the utility model sky/fully loaded compensation oleo-pneumatic suspension cylinder structure of self-adaptive pressure figure (being fully loaded with);
Embodiment
The utility model comprises cylinder head 11, cylinder barrel 12, seal holder ring 13, piston rod 14, piston 15, stays plug 16; In the outstanding cylinder upper oil cavitie 21, lower oil cavitie 22, secondary oil pocket 23 totally three oil pockets are set, in cylinder barrel 12 inside, staying plug 16 is fixedly connected on piston rod 14 inwalls, stay plug 16 and be provided with damping hole 31 and one-way valve 32, be communicated with upper oil cavitie 21 and lower oil cavitie 22, form the cylinder interior damp channel between upper oil cavitie 21 and the lower oil cavitie 22; Piston rod 14 is at lower oil cavitie 22 1 ends, and piston 15 and stay on the piston rod sidewall between the plug 16 damping hole 33 and one-way valve 34 are set is communicated with lower oil cavitie 22, secondary oil pocket 23, forms the cylinder interior damp channel between lower oil cavitie 22 and the secondary oil pocket 23; Cylinder barrel 12 is provided with one-way valve 36 and damping hole 35, by external channel 37 being set from secondary oil pocket 23 of external communications and lower oil cavitie 22, forms the outside damp channel of cylinder between lower oil cavitie and the secondary oil pocket.The outside damp channel of this cylinder is made up of connecting passage 37, damping hole 35 and one-way valve 36.
The described location arrangements that is arranged on one-way valve 35 on the cylinder barrel 12 and damping hole 36 is unloaded between the fully loaded travel position scope at suspension cylinder at piston 15; Described piston is provided with seal ring 17, is used to carry out the switching of external channel; The connection of the working state of the outstanding cylinder of identification and control external channel and closing; Vehicle-state and damping constant are discerned and controlled.
Other component, as part Sealing, dust ring, guidance tape, component such as filling device, connection, installation, detection, protection omit in the drawings.
The utility model constructs three oil pockets: upper oil cavitie 22, lower oil cavitie 22, secondary oil pocket 23; And construct two internal damping passages, external damping passage totally three damp channels: the external damping passage between internal damping passage between the internal damping passage between upper oil cavitie and lower oil cavitie, lower oil cavitie and secondary oil pocket and lower oil cavitie and secondary oil pocket.Comprise three groups of one- way valves 32,34,36 and damping hole 31,33,35.
Wherein, lower oil cavitie 22, secondary oil pocket 23, pressure compensation chamber each other.When outstanding cylinder was compressed, lower oil cavitie 22 pressure raise, secondary oil pocket 23 pressure reduce.The pressure rise of lower oil cavitie 22, secondary oil pocket 23 has been given in compensation, makes it the pressure fall and reduces.Equally, when outstanding cylinder was extended, secondary oil pocket 23 pressure raise, lower oil cavitie 22 pressure reduce.The pressure rise of secondary oil pocket 23, lower oil cavitie 22 has been given in compensation, makes it the pressure fall and reduces.So just eliminate or reduced the probability of negative pressure appearance, enlarged the application area of outstanding cylinder, strengthened the stability and the reliability of system works; Realized distributing rationally of suspension cylinder internal pressure.
Simultaneously, be arranged in one-way valve 36 between suspension cylinder sky/fully loaded position and damping hole 35 formed outside damp channels on the cylinder barrel and realized identification to the suspension cylinder loaded-up condition and the adjustment of corresponding damping constant and control.The seal ring of arranging on the piston 15 17 is implemented the accurate open and close of external damp channel.
Claims (4)
1. sky/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure comprises cylinder head, cylinder barrel, seal holder ring, piston rod, piston, stays plug; In the outstanding cylinder upper oil cavitie, lower oil cavitie, secondary oil pocket totally three oil pockets are set,, are provided with damp channel between upper oil cavitie, lower oil cavitie, be provided with damp channel between lower oil cavitie, secondary oil pocket in cylinder barrel inside; Upper oil cavitie fills hydraulic oil and nitrogen, fills hydraulic oil in lower oil cavitie, the secondary oil pocket; It is characterized in that also being provided with the damp channel between lower oil cavitie and the secondary oil pocket in the cylinder barrel outside.
2. the sky according to claim 1/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure is characterized in that the described damp channel that is arranged on the cylinder barrel outside is made up of connecting passage, damping hole and one-way valve.
3. the sky according to claim 1 and 2/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure, it is characterized in that the described plug of staying is fixedly connected on the piston rod, stay and be provided with damping hole and one-way valve beyond the Great Wall, be communicated with upper oil cavitie, lower oil cavitie, form the cylinder interior damp channel between upper oil cavitie and the lower oil cavitie; Described piston rod is provided with damping hole and one-way valve at lower oil cavitie one end on piston and the piston rod sidewall between filling in, and is communicated with lower oil cavitie, secondary oil pocket, forms the cylinder interior damp channel between lower oil cavitie and the secondary oil pocket; Cylinder barrel is provided with one-way valve and damping hole, by external channel being set from secondary oil pocket of external communications and lower oil cavitie, forms the outside damp channel of cylinder between lower oil cavitie and the secondary oil pocket.
4. the sky according to claim 3/fully loaded compensation oleo-pneumatic suspension cylinder of self-adaptive pressure is characterized in that, the described location arrangements that is arranged on one-way valve on the cylinder barrel and damping hole is unloaded between the fully loaded travel position scope at suspension cylinder at piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202145002U CN201730890U (en) | 2010-06-04 | 2010-06-04 | No-load/full-load self-adaptive pressure compensation type hydro-pneumatic suspension cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202145002U CN201730890U (en) | 2010-06-04 | 2010-06-04 | No-load/full-load self-adaptive pressure compensation type hydro-pneumatic suspension cylinder |
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| Publication Number | Publication Date |
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| CN201730890U true CN201730890U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202145002U Expired - Lifetime CN201730890U (en) | 2010-06-04 | 2010-06-04 | No-load/full-load self-adaptive pressure compensation type hydro-pneumatic suspension cylinder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269196A (en) * | 2010-06-04 | 2011-12-07 | 张宏如 | No-/full-load self-adaptive pressure compensating type hydro-pneumatic suspension cylinder |
| CN102434528A (en) * | 2011-11-26 | 2012-05-02 | 内蒙古北方重型汽车股份有限公司 | Variable-damping oil gas suspension cylinder controlled by switch |
| CN109958671A (en) * | 2019-04-26 | 2019-07-02 | 上海振华重工(集团)股份有限公司 | A kind of cushion cylinder to land on cone for trestle |
-
2010
- 2010-06-04 CN CN2010202145002U patent/CN201730890U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269196A (en) * | 2010-06-04 | 2011-12-07 | 张宏如 | No-/full-load self-adaptive pressure compensating type hydro-pneumatic suspension cylinder |
| CN102434528A (en) * | 2011-11-26 | 2012-05-02 | 内蒙古北方重型汽车股份有限公司 | Variable-damping oil gas suspension cylinder controlled by switch |
| CN109958671A (en) * | 2019-04-26 | 2019-07-02 | 上海振华重工(集团)股份有限公司 | A kind of cushion cylinder to land on cone for trestle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |