CN209212857U - It is a kind of for adjusting the hydro-pneumatic spring of bodywork height - Google Patents
It is a kind of for adjusting the hydro-pneumatic spring of bodywork height Download PDFInfo
- Publication number
- CN209212857U CN209212857U CN201821465041.8U CN201821465041U CN209212857U CN 209212857 U CN209212857 U CN 209212857U CN 201821465041 U CN201821465041 U CN 201821465041U CN 209212857 U CN209212857 U CN 209212857U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- hydro
- piston
- adjusting
- cylinder barrel
- 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.)
- Active
Links
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a kind of for adjusting the hydro-pneumatic spring of bodywork height, including cylinder barrel, cylinder bottom, piston rod, piston, floating piston, charge valve and guide sleeve, described cylinder barrel one end is connect with the cylinder bottom, described piston rod one end is equipped with the piston, the piston end of the piston rod protrudes into the cylinder barrel, and the inner wall frictional connection with the cylinder barrel, the other end of the cylinder barrel are equipped with for the guide sleeve with the piston rod frictional connection；The piston rod is hollow structure, and built-in cavity is used as gas chamber, is equipped with the charge valve on the side wall of the piston rod other end, equipped with the floating piston, the inner wall frictional connection of the floating piston and the piston rod in the gas chamber；The cylinder bottom is equipped with oil inlet and outlet, and the oil inlet and outlet is equipped with explosion-proof valve.The utility model can be realized bodywork height adjusting, and have the function of buffering and absorbing suspension system vibrational energy.
Description
Technical field
The utility model belongs to vehicle suspension system technical field more particularly to a kind of for adjusting the oil gas of bodywork height
Spring.
Background technique
Elastic element is the core component of suspension system, and suspension system is the important composition portion of all kinds of land traversing vehicles
Point, the quality of the system has conclusive influence to the maneuvering performance of vehicle, cross-country power, riding comfort.Therefore, bullet
Designing and manufacturing for property element is very crucial.Common vehicle elastic element includes flat spring, helical spring, torsion-bar spring, air
Spring.To the suspension system of maneuverability requirement higher special vehicle and military vehicle, generally require with bodywork height adjusting
Function, and above-mentioned elastic element cannot be met the requirements.
Utility model content
The purpose of the utility model is to provide a kind of for adjusting the hydro-pneumatic spring of bodywork height, to realize bodywork height
It adjusts, and has the function of buffering and absorbing suspension system vibrational energy.
The utility model provide it is a kind of for adjusting the hydro-pneumatic spring of bodywork height, including cylinder barrel, cylinder bottom, piston rod,
Piston, floating piston, charge valve and guide sleeve, cylinder barrel one end are connect with cylinder bottom, and piston rod one end is equipped with piston, piston rod
Piston end protrudes into cylinder barrel, and the inner wall frictional connection with cylinder barrel, the other end of cylinder barrel be equipped with for piston rod frictional connection
Guide sleeve；
Piston rod is hollow structure, and built-in cavity is equipped with charge valve on the side wall of the piston rod other end as gas chamber,
Floating piston, the inner wall frictional connection of floating piston and piston rod are equipped in gas chamber；
Cylinder bottom is equipped with oil inlet and outlet, and oil inlet and outlet is equipped with explosion-proof valve.
Further, guide sleeve outer end be equipped with spring enhance sealing ring, spring enhancing sealing ring include U-shaped sealing slip ring and
Stainless steel spring, stainless steel spring are set in the U-lag of U-shaped sealing slip ring.
Further, U-shaped sealing slip ring is made of polytetrafluoroethylene (PTFE) and carbon fiber.
Further, charge valve is equipped with protective cap, is equipped with gasket at the cooperation of charge valve and protective cap.
Further, the thread joint face of cylinder barrel and cylinder bottom is coated with thread locking adhesive.
Further, charge valve is welded by inflation valve housing and piston rod.
Further, piston rod has the surface layer by high-frequency quenching.
According to the above aspect of the present invention, the adjusting of bodywork height can be realized by the hydro-pneumatic spring for adjusting bodywork height, and
Have the function of buffering and absorbing suspension system vibrational energy.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is that the utility model is a kind of for adjusting the structural schematic diagram of the hydro-pneumatic spring of bodywork height；
Fig. 2 is A in Fig. 1 to schematic diagram；
Fig. 3 is that the utility model is a kind of for adjusting the scheme of installation of the hydro-pneumatic spring explosion-proof valve of bodywork height.
Figure label:
1- upper bracket；The upper ball bowl of 2-；3- adjusting pad；Ball bowl seat under 4-；Ball bowl under 5-；6- blocking cap；7- fitting body；8- combination
Sealing ring；9- explosion-proof valve；10- cylinder bottom；11- retaining ring；12- cylinder barrel；13- piston；14- piston rod；15- guide sleeve；16- cylinder
Lid；17- gland；The general plug sealing of 18-M2 type spy's health；19- floating piston；20- charge valve；21- blocking；22- screw；23- standard
Type spring washer；24- plug screw；25- oil sealing paper circle.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
Join shown in Fig. 1, present embodiments provides a kind of for adjusting the hydro-pneumatic spring of bodywork height, including cylinder barrel 12, cylinder
Bottom 10, piston rod 14, piston 13, floating piston 19, charge valve 20 and guide sleeve 15,12 one end of cylinder barrel are connect with cylinder bottom 10, living
14 one end of stopper rod is equipped with piston 13, and the piston end of piston rod 14 protrudes into cylinder barrel 12, and the inner wall frictional connection with cylinder barrel 12, cylinder
The other end of cylinder 12 is equipped with for the guide sleeve with 14 frictional connection of piston rod；Piston rod 14 is hollow structure, built-in cavity
As gas chamber, charge valve 20 is installed on the side wall of 14 other end of piston rod, is equipped with floating piston 19, floating piston 19 in gas chamber
With the inner wall frictional connection of piston rod 14；Cylinder bottom 10 is equipped with oil inlet and outlet, and oil inlet and outlet is equipped with explosion-proof valve 9.
By the way that the hydro-pneumatic spring to be set at multiple supporting points of car body, it is by driving device driving hydro-pneumatic spring acting
Integral elevating or the single-point lifting that car body can be achieved, to achieve the purpose that bodywork height adjusts.
By the way that gas chamber is placed in hydro-pneumatic spring piston rod inner, the volume of piston rod inner hole is made full use of, hydro-pneumatic spring is made
Volume reduces, and weight saving is easy for installation, easy to repair.
By pacifying installation explosion-proof valve 9 at oil inlet and outlet in hydro-pneumatic spring cylinder bottom, when inlet and outlet flow is greater than explosion-proof valve volume
When constant flow, explosion-proof valve is automatically closed, and can be improved the reliability of hydro-pneumatic spring.Explosion-proof valve is mounted on hydro-pneumatic spring oil inlet and outlet
Place, effect are that the oil liquid of hydro-pneumatic spring when preventing oil pipe from rupturing suddenly largely flows out, and cause hydro-pneumatic spring ineffective, even
It causes the accident.When oil pipe ruptures suddenly, explosion-proof valve moment blocks oil circuit, and the oil liquid in hydro-pneumatic spring will not flow out, oil gas bullet
Spring still can be used, and not only achieve the purpose that safe, and is avoided that hydraulic oil leaks and pollutes.
Explosion-proof valve 9 is using the pressure difference at inlet and outlet both ends and the imbalance of spring force, when the flow in pipeline is more than setting value
When, two hydraulic fluid port pressure differences increase, and spring force is overcome to push valve core movement, cut off oil circuit, prevent system pressure out of control.As pipeline is broken
After damage, inside and outside differential pressure increases, and flow is uprushed, and after being more than metered flow, explosion-proof valve is closed, and pipelines from bursting tubing pressure subtracts suddenly
Small, hydraulic oil will not outflow in cylinder barrel, and hydro-pneumatic spring is remained to using will not influence vehicle normally travel because of pipeline problem.
It not can be carried out height adjustment only, can just restore normal after needing to change damaged pipeline.
In the present embodiment, 15 outer end of guide sleeve is equipped with spring enhancing sealing ring (the general plug sealing 18 of M2 type spy's health), spring
Enhancing sealing ring includes U-shaped sealing slip ring and stainless steel spring, and stainless steel spring is set in the U-lag of U-shaped sealing slip ring.This is close
Seal has dust-proof and sealing double action, can seal the pressure of the formation such as cylinder barrel external water, gas, be suitable for rotatory sealing, can protect
Card vehicle under water 2m even deeper inside when hydro-pneumatic spring cylinder in do not intake, while this sealing ring chemical corrosion resistance is strong.This is close
Seal is installed using open type.
In the present embodiment, U-shaped sealing slip ring is made of the carbon fiber of polytetrafluoroethylene (PTFE) and 15%.
In the present embodiment, charge valve 20 is equipped with protective cap, is equipped with gasket at the cooperation of charge valve and protective cap, can
Improve sealing effect.
In the present embodiment, the thread joint face of cylinder barrel 12 and cylinder bottom 10 is coated with thread locking adhesive, can be improved sealing effect
Fruit.
In the present embodiment, charge valve 20 is welded by inflation valve housing and piston rod 14, improves stability.
In the present embodiment, piston rod 14 has the surface layer by high-frequency quenching.Before 14 outer surface chromium plating of piston rod
High-frequency quenching processing is carried out, can be improved piston rod surface hardness, increases external force resistance collision energy, is conducive to extend product use
Service life.
The hydro-pneumatic spring has the double action of helical spring and oleo-gear, and the course of work is as follows:
The required amount of oil liquid is injected from pouring orifice and is filled with nitrogen from charge valve 20 as required.
When vehicle stationary state, hydro-pneumatic spring plays a supportive role；When vehicle operating status, hydro-pneumatic spring removes supporting role
Outside, the impact of concave-convex road surface is still suffered from.
When track protrusion, piston rod 14 is compressed, while the movement that 12 inner fluid of cylinder barrel passes through floating piston
By the indoor gas compression of gas, increase oil pressure and air pressure in cylinder barrel, 14 bearing capacity of piston rod increases, and hydro-pneumatic spring rigidity increases
Add.When 14 compression travel of piston rod is bigger, 14 bearing capacity of piston rod is bigger, and rigidity also increases with it.
When track recess, piston rod 14 pressure and stretches out, cylinder barrel under the action of unsprung mass in cylinder barrel 12
Internal volume increases, and the indoor gas push floating piston 19 of gas moves at this time, and gas pressure and oil liquid pressure reduce, piston rod 14
Bearing capacity also accordingly reduces, and rigidity reduces.Stretching travel is bigger, and 14 bearing capacity of piston rod is smaller, and rigidity is also smaller.
When stretching (recovery) or compression, the oil liquid of annular chamber is discharged or is inhaled by the oil-through-hole on piston 13
Enter.Oil liquid will generate certain damping force when passing through damping hole, thus decayed stretching (recovery) or compression when kinetic energy, be attenuated
Kinetic energy be converted into thermal energy, be discharged in atmosphere by cylinder barrel and 14 surface of piston rod.Pass through oil inlet or adjustable oil of draining the oil
The active length of gas spring.
Hydro-pneumatic spring provided in this embodiment has the following technical effect that
1) non-linear rigidity: the rigidity of hydro-pneumatic spring is non-linear, cumulative (subtracting).
2) nonlinear dampling characteristic: can inhibit rapidly the vibration of vehicle frame, have damping well.
3) bodywork height is freely adjusted: pass through hydro-pneumatic spring and meanwhile adjust or individually adjust, height of chassis above ground can oscilaltion,
Front and back lifting or left and right lifting.
4) when external accumulator, rigid locking can rigid locking: be carried out.
5) improve vehicle movement performance: certain fortune of vehicle can be improved by the criss-cross different connections of hydro-pneumatic spring
Dynamic performance (such as roll motion, pitching movement).
6) unit stored energy ratio is big: this feature is particularly advantageous to heavy vehicle, can effectively mitigate sprung mass and knot
Structure size.
7) variation rigidity is adjusted: by the change to hydro-pneumatic spring medium, it can be achieved that stiffness tuning.
8) variable damping power is adjusted: by changing the size of damping hole, it can be achieved that variable damping power is adjusted.
9) hydro-pneumatic spring is compact-sized.
The above is only the preferred embodiment of the utility model, is not intended to limit the utility model, it is noted that
For those skilled in the art, without deviating from the technical principle of the utility model, it can also do
Several improvements and modifications out, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of for adjusting the hydro-pneumatic spring of bodywork height, which is characterized in that including cylinder barrel, cylinder bottom, piston rod, piston, float
Piston, charge valve and guide sleeve, described cylinder barrel one end are connect with the cylinder bottom, and described piston rod one end is equipped with the work
Plug, the piston end of the piston rod protrude into the cylinder barrel, and the inner wall frictional connection with the cylinder barrel, the other end of the cylinder barrel
Equipped with for the guide sleeve with the piston rod frictional connection；
The piston rod is hollow structure, and built-in cavity is installed on the side wall of the piston rod other end as gas chamber
Charge valve is stated, is equipped with the floating piston, the inner wall frictional connection of the floating piston and the piston rod in the gas chamber；
The cylinder bottom is equipped with oil inlet and outlet, and the oil inlet and outlet is equipped with explosion-proof valve.
2. according to claim 1 a kind of for adjusting the hydro-pneumatic spring of bodywork height, which is characterized in that the guide sleeve
Outer end, which is equipped with spring, enhances sealing ring, and the spring enhancing sealing ring includes that U-shaped seals slip ring and stainless steel spring, described stainless
Steel spring is set in the U-lag of U-shaped sealing slip ring.
3. according to claim 2 a kind of for adjusting the hydro-pneumatic spring of bodywork height, which is characterized in that the U-shaped is close
Envelope slip ring is made of polytetrafluoroethylene (PTFE) and carbon fiber.
4. according to claim 3 a kind of for adjusting the hydro-pneumatic spring of bodywork height, which is characterized in that the charge valve
Equipped with protective cap, gasket is equipped at the cooperation of the charge valve and the protective cap.
5. according to claim 4 a kind of for adjusting the hydro-pneumatic spring of bodywork height, which is characterized in that the cylinder barrel with
The thread joint face of the cylinder bottom is coated with thread locking adhesive.
6. according to claim 5 a kind of for adjusting the hydro-pneumatic spring of bodywork height, which is characterized in that the charge valve
It is welded by inflation valve housing and the piston rod.
7. according to claim 6 a kind of for adjusting the hydro-pneumatic spring of bodywork height, which is characterized in that the piston rod
With the surface layer by high-frequency quenching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821465041.8U CN209212857U (en) | 2018-09-07 | 2018-09-07 | It is a kind of for adjusting the hydro-pneumatic spring of bodywork height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821465041.8U CN209212857U (en) | 2018-09-07 | 2018-09-07 | It is a kind of for adjusting the hydro-pneumatic spring of bodywork height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209212857U true CN209212857U (en) | 2019-08-06 |
Family
ID=67453841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821465041.8U Active CN209212857U (en) | 2018-09-07 | 2018-09-07 | It is a kind of for adjusting the hydro-pneumatic spring of bodywork height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209212857U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520430A (en) * | 2020-02-25 | 2020-08-11 | 中国北方车辆研究所 | Candle type oil gas suspension |
| CN113915276A (en) * | 2021-10-29 | 2022-01-11 | 名震实业控股集团有限公司 | Air cushion type shock absorber system |
-
2018
- 2018-09-07 CN CN201821465041.8U patent/CN209212857U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520430A (en) * | 2020-02-25 | 2020-08-11 | 中国北方车辆研究所 | Candle type oil gas suspension |
| CN111520430B (en) * | 2020-02-25 | 2024-05-14 | 中国北方车辆研究所 | Candle type hydro-pneumatic suspension |
| CN113915276A (en) * | 2021-10-29 | 2022-01-11 | 名震实业控股集团有限公司 | Air cushion type shock absorber system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8579311B2 (en) | Wheel mass damper assembly | |
| CN209212857U (en) | It is a kind of for adjusting the hydro-pneumatic spring of bodywork height | |
| CN107869545B (en) | Electronic composite vibration damper | |
| CN102913585B (en) | Hydro-pneumatic spring | |
| CN204921817U (en) | Train oil pressure shock absorber | |
| CN108999911A (en) | Fulcrum bar component with combined gas spring and damper | |
| CN102518730A (en) | Inflatable vibration damper | |
| CN207111821U (en) | Anti- snake movement oil pressure shock absorber used for rail vehicle | |
| CN106704442B (en) | Hydro-pneumatic spring | |
| CN205806309U (en) | A kind of hydroelastic system damping device | |
| CN208919194U (en) | A kind of temperature loading self-balancing hydro-pneumatic spring | |
| CN202707642U (en) | Adjustable travel piston type energy accumulator | |
| CN201739414U (en) | Energy-absorbing vibration damper of car | |
| CN206280427U (en) | A kind of air-bag vibration damper | |
| CN201615168U (en) | Air pressure vibration absorber for motor vehicle suspension | |
| CN213007477U (en) | Multifunctional liquid-gas suspension device | |
| CN204647127U (en) | Combined type spring-damper | |
| CN201427510Y (en) | Vibration absorber | |
| CN114483858A (en) | Shock attenuation system and vehicle | |
| CN210565983U (en) | Hydraulic stretching limiting mechanism damper with protection function | |
| CN107654558A (en) | A kind of vehicle shock absorber | |
| CN207621111U (en) | A kind of single-action piston type hydraulic cylinder | |
| CN207864505U (en) | A kind of two-way damping-adjustable shock-absorber for four-wheel all-terrain vehicle | |
| CN107956833B (en) | Cylinder air spring | |
| CN106195112A (en) | A kind of damping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |