CN105179551A - Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder - Google Patents
Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder Download PDFInfo
- Publication number
- CN105179551A CN105179551A CN201510592480.XA CN201510592480A CN105179551A CN 105179551 A CN105179551 A CN 105179551A CN 201510592480 A CN201510592480 A CN 201510592480A CN 105179551 A CN105179551 A CN 105179551A
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- Prior art keywords
- hydro
- pneumatic spring
- cylinder
- spring cylinder
- pressure nitrogen
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Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 29
- 238000013016 damping Methods 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000872 buffer Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The invention provides a single-piston-rod double-cylinder-barrel hydro-pneumatic spring. Equivalently, two hydro-pneumatic spring cylinder bodies share a piston rod. Two independent cylinder barrels are arranged at the two ends respectively and each assembled into an independent hydro-pneumatic spring cylinder body. The hydro-pneumatic spring cylinder body at one end is inflated with high-pressure nitrogen, and the hydro-pneumatic spring cylinder body at the other end is inflated with low-pressure nitrogen. Equivalently, two springs unequal in rigidity are overlapped, when the load is low, the hydro-pneumatic spring cylinder body (at the low air pressure end) inflated with the low-pressure nitrogen works, and after the load reaches a certain value, the two hydro-pneumatic spring cylinder bodies are connected in series to work together, the requirement for the large-range change of the effective rigidity is met, and the appropriate buffering stroke is achieved at the no load and the full load.
Description
Technical field
The invention belongs to hydro-pneumatic spring cylinder, especially single-piston rod twin-tub cylinder hydro-pneumatic spring cylinder.
Background technique
Current hydro-pneumatic spring cylinder generally regulates rigidity by inflation pressure, also have and change damping or rigidity by the structure of piston or cylinder barrel, but the excursion of effective rigidity is all less than normal, or when rigidity is large, buffering is too short, and the stroke lengthening hydro-pneumatic spring cylinder is subject to the restriction in space.As vehicle hydro-pneumatic spring cylinder all needs a good cushion stroke at unloaded and full load, have cushioning effect as during zero load, then full load cushioning effect is then poor; Change initial rigidity by inflation pressure, ensure full load good buffer effect, time unloaded, then rigidity is too large, and cushioning effect is deteriorated.And increase the restriction that stroke is subject to height of car.
Summary of the invention
In order to solve the little shortcoming of existing hydro-pneumatic spring cylinder effective rigidity excursion, the present invention proposes single-piston rod twin-tub cylinder hydro-pneumatic spring cylinder.
For this reason, technological scheme of the present invention is as follows: single-piston rod twin-tub cylinder hydro-pneumatic spring cylinder, is characterized in that: respectively there is an independently cylinder barrel at two ends, and cylinder barrel is by becoming an independently hydro-pneumatic spring cylinder with cylinder bottom, cylinder cap, Piston assembling; The two ends of a piston rod are connected with the piston of two ends hydro-pneumatic spring cylinder respectively; Be filled with high pressure nitrogen in a hydro-pneumatic spring cylinder, be filled with low-pressure nitrogen in a hydro-pneumatic spring cylinder, there is one-way valve at the two ends of piston rod, and piston has damping hole;
Two independently hydro-pneumatic spring cylinder be equivalent to the unequal springs superposition of two rigidity, when low load, be filled with the hydro-pneumatic spring cylinder working of low-pressure nitrogen; After load reaches certain value, the hydro-pneumatic spring cylinder being filled with high pressure nitrogen, the hydro-pneumatic spring cylinder series connection being filled with low-pressure nitrogen work together, and the wide variation reaching effective rigidity requires all there is suitable cushion stroke with unloaded with full load.
Beneficial effect: adopt the present invention, when unloaded lotus or low load, be filled with the hydro-pneumatic spring cylinder compression of low-pressure nitrogen, because the hydro-pneumatic spring cylinder inflation pressure being filled with high pressure nitrogen is high, be equivalent to rigid body, only be filled with the effect that the one-way valve of hydro-pneumatic spring cylinder one end of low-pressure nitrogen and damping hole complete elastomer and vibration damper, when load reaches certain value, the residual buffer stroke being filled with the hydro-pneumatic spring cylinder of low-pressure nitrogen shortens, cushioning effect is deteriorated, and the hydro-pneumatic spring cylinder being filled with high pressure nitrogen starts compression, concur with the hydro-pneumatic spring cylinder being filled with low-pressure nitrogen, make and there is larger cushion stroke, the cushioning effect possessed and effectiveness in vibration suppression.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention (compressive state).
Fig. 2 is full elongation state schematic diagram of the present invention.
Shown in figure: 1. cylinder bottom; 2. piston; 3. cylinder barrel; 4. cylinder cap; 5. piston rod; 6. damping hole; 7. one-way valve; A. low-pressure nitrogen; B. high pressure nitrogen.
Embodiment
As shown in Figure 1, single-piston rod twin-tub cylinder hydro-pneumatic spring cylinder, comprising two ends respectively has an independently cylinder barrel 3, and cylinder barrel 3 is by being assembled into an independently hydro-pneumatic spring cylinder with cylinder bottom 1, cylinder cap 4, piston 2, (sealing and guiding device); Sealing and guiding device are routine techniques, are not described in detail at this; The two ends of a piston rod 5 are connected with the piston 2 of two ends hydro-pneumatic spring cylinder respectively; Be filled with high pressure nitrogen B in a hydro-pneumatic spring cylinder, be filled with low-pressure nitrogen A in a hydro-pneumatic spring cylinder, there is one-way valve 7 at the two ends of piston rod, piston have damping hole 6;
Two independently hydro-pneumatic spring cylinder be equivalent to the unequal springs superposition of two rigidity, when low load, be filled with the hydro-pneumatic spring cylinder working of low-pressure nitrogen B; After load reaches certain value, the hydro-pneumatic spring cylinder being filled with high pressure nitrogen A, the hydro-pneumatic spring cylinder series connection being filled with low-pressure nitrogen B work together, and the wide variation reaching effective rigidity requires all there is suitable cushion stroke with unloaded with full load.
As shown in Figure 2, when not loading, piston rod two ends are in full elongation state, by the oil-gas ratin calculated to refueling inflation in upper and lower two cylinder barrels, such as upper end inflation 0.8MPa, lower end inflation 4MPa, when upper end compression stroke residue 20 percent, system pressure reaches 4MPa, lower end also starts to compress, and when lower end is compressed to residue 20 percent, system pressure can at 20MPa, so within the scope of the load change of 25 times, the buffering that this hydro-pneumatic spring cylinder has had and effectiveness in vibration suppression.And conventional single cylinder single-piston rod hydro-pneumatic spring cylinder pressure is when reaching 25 times of changes, stroke only surplus 4 percent, cushioning effect is very poor.Wherein the working principle of two ends single oil gas spring cylinder is identical with general single chamber hydragas spring cylinder up and down: when impact peak value appears in external load, piston rod 5 compresses in chamber, hydraulic oil enters rod chamber from rodless cavity through one-way valve and damping hole, because of inner nitrogen smaller volume, pressure increase, reach balance fast with load peaks, play buffer function; When peak value diminishes, load is less than the thrust that nitrogen produces, and piston rod is overhanging, and now, one-way valve is in closedown pressure condition, and rod chamber hydraulic oil flows into rodless cavity through damping hole, and the elastomer making nitrogen compress formation recovers to be blocked, and plays damping effect.
Claims (1)
1. single-piston rod twin-tub cylinder hydro-pneumatic spring cylinder, is characterized in that: respectively there is an independently cylinder barrel at two ends, and cylinder barrel is by becoming an independently hydro-pneumatic spring cylinder with cylinder bottom, cylinder cap, Piston assembling; The two ends of a piston rod are connected with the piston of two ends hydro-pneumatic spring cylinder respectively; Be filled with high pressure nitrogen in a hydro-pneumatic spring cylinder, be filled with low-pressure nitrogen in a hydro-pneumatic spring cylinder, there is one-way valve at the two ends of piston rod, and piston has damping hole;
Two independently hydro-pneumatic spring cylinder be equivalent to the unequal springs superposition of two rigidity, when low load, be filled with the hydro-pneumatic spring cylinder working of low-pressure nitrogen; After load reaches certain value, the hydro-pneumatic spring cylinder being filled with high pressure nitrogen, the hydro-pneumatic spring cylinder series connection being filled with low-pressure nitrogen work together, and the wide variation reaching effective rigidity requires all there is suitable cushion stroke with unloaded with full load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510592480.XA CN105179551A (en) | 2015-09-17 | 2015-09-17 | Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510592480.XA CN105179551A (en) | 2015-09-17 | 2015-09-17 | Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105179551A true CN105179551A (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510592480.XA Pending CN105179551A (en) | 2015-09-17 | 2015-09-17 | Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179551A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836538A (en) * | 2016-03-29 | 2016-08-10 | 杭州九维电机有限公司 | Double-station feeding and discharging device |
| CN108237861A (en) * | 2016-12-23 | 2018-07-03 | 郑州宇通客车股份有限公司 | Suspension system and vehicle using the suspension system |
| CN108237859A (en) * | 2016-12-23 | 2018-07-03 | 郑州宇通客车股份有限公司 | A suspension system and a vehicle using the suspension system |
| CN109027099A (en) * | 2018-09-26 | 2018-12-18 | 山东凌博瑞轨道交通科技有限公司 | Piston type self-adaptive damping variable hydraulic damper |
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|---|---|---|---|---|
| GB961644A (en) * | 1962-09-26 | 1964-06-24 | Guyton Ellis Hornsby | Aircraft landing gear |
| CN2193858Y (en) * | 1994-07-30 | 1995-04-05 | 刘卫卓 | Bicycle damping device |
| US20060163427A1 (en) * | 2003-01-10 | 2006-07-27 | Messier-Dowty Sa | Landing gear strut damper, and gear with independent struts comprising same |
| CN101012007A (en) * | 2007-02-06 | 2007-08-08 | 南京航空航天大学 | Two-stage series connection two-chamber buffer |
| CN102996696A (en) * | 2012-11-29 | 2013-03-27 | 江苏恒立高压油缸股份有限公司 | Rear suspension oil cylinder for heavy-duty industrial mining vehicle |
| CN205064675U (en) * | 2015-09-17 | 2016-03-02 | 十堰民乐液压机械有限公司 | Single piston rod double -cylinder section of thick bamboo oil/gas spring jar |
-
2015
- 2015-09-17 CN CN201510592480.XA patent/CN105179551A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB961644A (en) * | 1962-09-26 | 1964-06-24 | Guyton Ellis Hornsby | Aircraft landing gear |
| CN2193858Y (en) * | 1994-07-30 | 1995-04-05 | 刘卫卓 | Bicycle damping device |
| US20060163427A1 (en) * | 2003-01-10 | 2006-07-27 | Messier-Dowty Sa | Landing gear strut damper, and gear with independent struts comprising same |
| CN101012007A (en) * | 2007-02-06 | 2007-08-08 | 南京航空航天大学 | Two-stage series connection two-chamber buffer |
| CN102996696A (en) * | 2012-11-29 | 2013-03-27 | 江苏恒立高压油缸股份有限公司 | Rear suspension oil cylinder for heavy-duty industrial mining vehicle |
| CN205064675U (en) * | 2015-09-17 | 2016-03-02 | 十堰民乐液压机械有限公司 | Single piston rod double -cylinder section of thick bamboo oil/gas spring jar |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836538A (en) * | 2016-03-29 | 2016-08-10 | 杭州九维电机有限公司 | Double-station feeding and discharging device |
| CN105836538B (en) * | 2016-03-29 | 2020-01-17 | 杭州天铭科技股份有限公司 | Double-station loading and unloading device |
| CN108237861A (en) * | 2016-12-23 | 2018-07-03 | 郑州宇通客车股份有限公司 | Suspension system and vehicle using the suspension system |
| CN108237859A (en) * | 2016-12-23 | 2018-07-03 | 郑州宇通客车股份有限公司 | A suspension system and a vehicle using the suspension system |
| CN108237861B (en) * | 2016-12-23 | 2023-12-15 | 宇通客车股份有限公司 | Suspension systems and vehicles using the suspension systems |
| CN108237859B (en) * | 2016-12-23 | 2023-12-15 | 宇通客车股份有限公司 | Suspension system and vehicle using the suspension system |
| CN109027099A (en) * | 2018-09-26 | 2018-12-18 | 山东凌博瑞轨道交通科技有限公司 | Piston type self-adaptive damping variable hydraulic damper |
| CN109027099B (en) * | 2018-09-26 | 2020-02-18 | 山东凌博瑞轨道交通科技有限公司 | Piston type self-adaptive variable damping hydraulic shock absorber |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160510 Address after: 442716 Shiyan City, Hubei province Danjiangkou city Liuliping town along the River Road No. 1 Applicant after: Hubei excellent commercial vehicle suspension Co., Ltd. Address before: Along the road 442716 Shiyan city of Hubei province Danjiangkou city Liuliping Town Industrial Park No. 1 Applicant before: Shiyan Mingle Hydraulic Mechanical Co.,Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |
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| WD01 | Invention patent application deemed withdrawn after publication |