CN203756839U - Hydro-pneumatic spring - Google Patents
Hydro-pneumatic spring Download PDFInfo
- Publication number
- CN203756839U CN203756839U CN201420188745.0U CN201420188745U CN203756839U CN 203756839 U CN203756839 U CN 203756839U CN 201420188745 U CN201420188745 U CN 201420188745U CN 203756839 U CN203756839 U CN 203756839U
- Authority
- CN
- China
- Prior art keywords
- outer sleeve
- hydro
- piston
- air chamber
- pneumatic spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a spring and particularly relates to a hydro-pneumatic spring. The hydro-pneumatic spring comprises a lower receiving tray, an upper receiving tray, a damping valve seat, a piston, an outer sleeve, an inner cylinder barrel, a spherical air chamber, a hydro-pneumatic diaphragm and an oil filter plug, wherein the bottom of the inner cylinder barrel is rotatably connected with the lower receiving tray, and the top of the inner cylinder barrel is fixedly connected with the piston; the inner cylinder barrel is penetrated into the outer sleeve and is in sliding connection with the outer sleeve; the top of the outer sleeve is rotatably connected with the upper receiving tray; the damping valve seat is fixedly connected to the inner wall of the outer sleeve and is provided with an axial pinhole; the hydro-pneumatic diaphragm is arranged in the spherical air chamber and is used for partitioning the spherical air chamber into a damping oil accommodating chamber and a high-pressure nitrogen accommodating chamber; the damping oil accommodating chamber is communicated with a cavity located above the piston. The hydro-pneumatic spring is favorable in riding comfort, small in size, light in mass and capable of reducing the driving fatigue of a driver.
Description
Technical field
The utility model relates to a kind of spring, especially a kind of hydro-pneumatic spring.
Background technique
Most wheeled construction machinerys, owing to moving or operation through the rugged building site of being everlasting.For making machine normal operation, should not adopt resilient suspension, and should adopt rigid suspension, between vehicle bridge and vehicle frame for being rigidly connected, only by low pressure tyre, play partial buffer damping effect.But the engineering machinery motion speed of rigid suspension slightly improves, and just there will be the phenomenon of jumping, both dangerous, make again operator easily tired.
Model utility content
The utility model is intended to address the above problem, and a kind of hydro-pneumatic spring is provided, and it has good run smoothness, and volume is little, quality is light, can reduce the driving fatigue degree of driver, and its technological scheme adopting is as follows:
A hydro-pneumatic spring, comprising: under connect dish, on connect dish, damping valve seat, piston, outer sleeve, inner cylinder tube, spherical air chamber, oil gas barrier film and filler plug, described inner cylinder tube bottom with under connect dish and be rotationally connected, top and piston Joint; Described inner cylinder tube is threaded onto in outer sleeve and with outer sleeve and is slidably connected, described outer sleeve top with on connect dish be rotationally connected, described damping valve seat is fixed on the inwall of outer sleeve and offers axial aperture on damping valve seat, described oil gas barrier film is arranged in spherical air chamber and by spherical air chamber inner chamber and is divided into damping oil holding cavity and high pressure nitrogen holding cavity, and described damping oil holding cavity is communicated with the cavity of piston top.
On technique scheme basis, on described piston, be set with seal ring, described seal ring is compressed by adjusting nut, and described adjusting nut is connected with piston thread.
On technique scheme basis, on described spherical air chamber, offer the gas charging valve being connected with high pressure nitrogen holding cavity.
On technique scheme basis, also comprise dust-proof cover, described dust-proof cover be installed on down connect on dish and outer sleeve and by under connect the open area parcel sealing between dish and outer sleeve.
When load increases, vehicle frame and vehicle bridge are close, move and make its top volume reducing on piston, force fluid to enter spherical air chamber through damping valve seat, promoting oil gas barrier film moves to high pressure nitrogen holding cavity one side, thereby high pressure nitrogen holding cavity internal pressure is raise, and spring rigidity increases, and vehicle frame declines and slows down, when extraneous load equals nitrogen pressure, piston just stops moving down, and at this moment the relative position of vehicle frame and vehicle bridge no longer changes, and vehicle body height also no longer declines.When load reduces, working procedure is contrary.It should be noted that because nitrogen storage is within the sealed air chamber of constant volume, nitrogen pressure is that the size with external load changes, therefore hydro-pneumatic spring has the feature of variable stiffness herein.
The utlity model has following advantage: using gas as Elastic medium, with fluid effect power transmission medium, utilize the compressibility of gas to realize spring action, there is good run smoothness, and volume is little, quality is light, can reduce the driving fatigue degree of driver.
Accompanying drawing explanation
Fig. 1: cross-sectional view of the present utility model;
Embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail:
As shown in Figure 1, a kind of hydro-pneumatic spring of the present embodiment, it is characterized in that, comprise: under connect dish 1, on connect dish 2, damping valve seat 3, piston 6, outer sleeve 7, inner cylinder tube 8, spherical air chamber 10, oil gas barrier film 13 and filler plug 15, described inner cylinder tube 8 bottoms with under connect dish and 1 be rotationally connected, top and piston 6 Joints; Described inner cylinder tube 8 is threaded onto in outer sleeve 7 and with outer sleeve 7 and is slidably connected, described outer sleeve 7 tops with on connect dish and 2 be rotationally connected, described damping valve seat 3 is fixed on the inwall of outer sleeve 7 and offers axial aperture on damping valve seat 3, described oil gas barrier film 13 is arranged in spherical air chamber 10 and by spherical air chamber 10 inner chambers and is divided into damping oil holding cavity 11 and high pressure nitrogen holding cavity 12, and described damping oil holding cavity 11 is communicated with the cavity of piston 6 tops.
Preferably, on described piston 6, be set with seal ring 5, described seal ring 5 is compressed by adjusting nut 4, and described adjusting nut 4 is threaded with piston 6.
Preferably, on described spherical air chamber 10, offer the gas charging valve 14 being connected with high pressure nitrogen holding cavity 12.
When load increases, vehicle frame (its with under connect dish 1 affixed) and vehicle bridge (its with on connect dish 2 affixed) are close, on piston, move and make its top volume reducing, force fluid to enter spherical air chamber 10 through damping valve seat 3, promoting oil gas barrier film 13 moves to high pressure nitrogen holding cavity 12 1 sides, thereby high pressure nitrogen holding cavity 12 internal pressures are raise, spring rigidity increases, vehicle frame declines and slows down, when extraneous load equals nitrogen pressure, piston just stops moving down, and at this moment the relative position of vehicle frame and vehicle bridge no longer changes, and vehicle body height also no longer declines.When load reduces, working procedure is contrary.It should be noted that because nitrogen storage is within the sealed air chamber of constant volume, nitrogen pressure is that the size with external load changes, therefore hydro-pneumatic spring has the feature of variable stiffness herein.
Preferably, also comprise dust-proof cover 9, described dust-proof cover 9 be installed on down connect on dish 1 and outer sleeve 7 and by under connect dish 1 and seal with the open area parcel between outer sleeve 7, dust-proof cover 9 can prevent that dust from entering.
With way of example, the utility model is illustrated above, but the utility model is not limited to above-mentioned specific embodiment, all any changes of doing based on the utility model or modification all belong to the claimed scope of the utility model.
Claims (4)
1. a hydro-pneumatic spring, is characterized in that, comprising: under connect dish, on connect dish, damping valve seat, piston, outer sleeve, inner cylinder tube, spherical air chamber, oil gas barrier film and filler plug, described inner cylinder tube bottom with under connect dish and be rotationally connected, top and piston Joint; Described inner cylinder tube is threaded onto in outer sleeve and with outer sleeve and is slidably connected, described outer sleeve top with on connect dish be rotationally connected, described damping valve seat is fixed on the inwall of outer sleeve and offers axial aperture on damping valve seat, described oil gas barrier film is arranged in spherical air chamber and by spherical air chamber inner chamber and is divided into damping oil holding cavity and high pressure nitrogen holding cavity, and described damping oil holding cavity is communicated with the cavity of piston top.
2. a kind of hydro-pneumatic spring according to claim 1, is characterized in that: on described piston, be set with seal ring, described seal ring is compressed by adjusting nut, and described adjusting nut is connected with piston thread.
3. a kind of hydro-pneumatic spring according to claim 1 and 2, is characterized in that: on described spherical air chamber, offer the gas charging valve being connected with high pressure nitrogen holding cavity.
4. a kind of hydro-pneumatic spring according to claim 3, is characterized in that: also comprise dust-proof cover, described dust-proof cover be installed on down connect on dish and outer sleeve and by under connect the open area parcel sealing between dish and outer sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420188745.0U CN203756839U (en) | 2014-04-09 | 2014-04-09 | Hydro-pneumatic spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420188745.0U CN203756839U (en) | 2014-04-09 | 2014-04-09 | Hydro-pneumatic spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756839U true CN203756839U (en) | 2014-08-06 |
Family
ID=51252119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420188745.0U Expired - Fee Related CN203756839U (en) | 2014-04-09 | 2014-04-09 | Hydro-pneumatic spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240409A (en) * | 2018-02-09 | 2018-07-03 | 河南理工大学 | A kind of double diaphragm air compression dampers |
-
2014
- 2014-04-09 CN CN201420188745.0U patent/CN203756839U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240409A (en) * | 2018-02-09 | 2018-07-03 | 河南理工大学 | A kind of double diaphragm air compression dampers |
| CN108240409B (en) * | 2018-02-09 | 2024-01-19 | 河南理工大学 | Double-diaphragm air compression shock absorber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104047987B (en) | A kind of Novel oil gas spring | |
| CN103883661B (en) | A kind of variable vibration damper of sliding valve style damping and method of work coordinating pneumatic spring | |
| WO2017012112A1 (en) | Oil damper for train | |
| CN102720795A (en) | Hydro-pneumatic spring for amphibious vehicles and hydraulic regulating device for hydro-pneumatic spring for amphibious vehicle | |
| CN206770497U (en) | A kind of shock absorber structure for automobile | |
| CN202251612U (en) | Oil-gas spring of automobile suspension system | |
| CN110206842A (en) | A kind of single cylinder cylinder double chamber hydragas spring | |
| CN104405812B (en) | Energy feedback shock absorber with damping stiffness changing along with road condition | |
| CN104482096B (en) | Air reservoir type adjustable single cylinder damper | |
| CN204004145U (en) | Automobile absorber | |
| CN102359528B (en) | Hydropneumatic spring of automotive suspension system | |
| CN105257763A (en) | Bidirectional-acting telescopic shock absorber | |
| JP5848544B2 (en) | Shock absorber with height adjustment function | |
| CN105134857B (en) | Stabilization type automobile absorber | |
| CN203756839U (en) | Hydro-pneumatic spring | |
| CN204403250U (en) | A kind of sensing frequency conversion vibration damper | |
| CN201944179U (en) | Vehicle shock absorber | |
| CN202707642U (en) | Adjustable travel piston type energy accumulator | |
| CN204985478U (en) | Automobile -used double -acting shock absorber | |
| CN203730633U (en) | Variable compression damping shock absorber | |
| CN108488297A (en) | A kind of hydro-pneumatic spring | |
| CN204004159U (en) | Road spring damper mechanism | |
| CN107477133A (en) | A kind of single-piston rod hydraulic damper | |
| CN106246793A (en) | A kind of hydro-pneumatic spring power cylinder, hydro pneumatic suspension and automobile | |
| CN203979250U (en) | A kind of vibration damper of good airproof performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |