CN107401575A - A kind of air spring piston - Google Patents
A kind of air spring piston Download PDFInfo
- Publication number
- CN107401575A CN107401575A CN201710751370.2A CN201710751370A CN107401575A CN 107401575 A CN107401575 A CN 107401575A CN 201710751370 A CN201710751370 A CN 201710751370A CN 107401575 A CN107401575 A CN 107401575A
- Authority
- CN
- China
- Prior art keywords
- piston body
- trapezoidal groove
- sealing ring
- piston
- groove
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 63
- 239000010727 cylinder oil Substances 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000010687 lubricating oil Substances 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 10
- 239000011261 inert gas Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of air spring piston, including upper piston body, lower piston body and intermediate piston body, the trapezoidal groove for accommodating duplex sealing ring is formed between upper piston body, lower piston body and intermediate piston body, duplex sealing ring is located at lateral ends and is provided with two seal convexities, the groove for accommodating lubricating oil is formed between seal convexity, small trapezoidal groove is provided with intermediate piston body, is filled with small trapezoidal groove on cylinder oil medium upper piston body or lower piston body and is provided with the oil filler point connected with small trapezoidal groove.The air spring piston good sealing effect of the present invention, is not susceptible to stuck phenomenon.
Description
Technical field
The present invention relates to piston technical field, more particularly to a kind of air spring piston.
Background technology
Gas spring purposes is very extensive, the operation principle of gas spring be filled with closed pressure cylinder inert gas or
Gas mixture, make the manyfold of the pressure superatmospheric in cavity, be less than the horizontal stroke of piston using the cross-sectional area of piston rod
Sectional area realizes the motion of piston rod so as to caused pressure differential.
Its simple in construction, reliable operation of gas spring, during with it to realize reciprocating motion, deceleration device can be removed from, and do not have
There are drive gap, stable movement, therefore be used widely in various mechanical systems.Gas spring power output and piston significant surface
The pressure difference on product and its both sides is directly proportional.
The piston in gas spring in use, because piston bears larger hydraulic coupling, can cause piston to exist at present
In running, there is shakiness, cause the generation of eccentric phenomena, bring it about clamping, cause the reduction of gas spring performance.Together
When, existing piston seal effect is poor, causes gas spring to lose its original function.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of good sealing effect, the gas spring for being not susceptible to stuck phenomenon is lived
Plug.
In order to solve the above-mentioned technical problem, the solution of the present invention is：
A kind of air spring piston, including upper piston body, lower piston body and it is connected to the upper piston body and lower piston body
Between intermediate piston body, the upper piston body, the diameter of lower piston body be consistent and diameter more than the intermediate piston body, institute
The trapezoidal groove for being formed between upper piston body, lower piston body and the intermediate piston body and accommodating duplex sealing ring is stated, it is described trapezoidal
Outwardly, the overall diameter of the duplex sealing ring is more than a diameter of 0.5-1.2mm of the upper piston body, institute at the big opening end of groove
State that the cross section of duplex sealing ring is consistent with the shape of the trapezoidal groove, and the duplex sealing ring is provided with positioned at lateral ends
The seal convexities of two in axial direction upper distributions, form the groove for accommodating lubricating oil between the seal convexity, described two
The protrusion height of seal convexity is consistent, and one of seal convexity is more than another seal convexity；Set on the intermediate piston body
It is equipped with the small trapezoidal groove of along the circumferential direction upper distribution, the big opening end of the small trapezoidal groove is towards the duplex sealing ring side
To, cylinder oil medium is filled with the small trapezoidal groove, oil filler point is provided with the upper piston body or lower piston body, it is described
Oil filler point connects with the small trapezoidal groove, and described small trapezoidal groove one end is provided with check valve in the oil filler point.
Preferably, between the side of the trapezoidal groove and the angle of bottom surface are 100~105 degree.
Preferably, the side of the trapezoidal groove and the angle of bottom surface are 102 degree.
Preferably, between the side of the small trapezoidal groove and the angle of bottom surface are 115~125 degree.
Preferably, the side of the small trapezoidal groove and the angle of bottom surface are 115 degree.
Preferably, through being provided between the upper piston body, lower piston body and the intermediate piston body for holding
Receive the groove of piston rod.
Preferably, the duplex sealing ring is rubber ring.
Compared with prior art, beneficial effects of the present invention are：
The present invention accommodates the trapezoidal recessed of duplex sealing ring due to being formed between upper piston body, lower piston body and intermediate piston body
Groove, and the big opening end of trapezoidal groove is outwardly, duplex sealing ring is placed with the trapezoidal groove, and duplex sealing ring is outer straight
Footpath is more than a diameter of 0.5-1.2mm of upper piston body or lower piston body.After the air spring piston is put into cylinder, due to double
Connection sealing ring is rubber ring, and under the effect of duplex sealing ring elastic force, duplex sealing ring is close to cylinder inner wall, reaches good sealing
Effect.
Because the duplex sealing ring is located at the seal convexities that lateral ends are provided with two in axial direction upper distributions, two
The groove for accommodating lubricating oil is formed between seal convexity, when two seal convexities are close to cylinder inner wall, lubricating oil can in groove
To play a part of compensation sealing, and between two seal convexities during mutual extruding so that groove diminishes, and lubrication oil density increases
Greatly, sealing effectiveness is better, and is not susceptible to stuck phenomenon.
Further, be provided with the small trapezoidal groove being distributed on along the circumferential direction on intermediate piston body, small trapezoidal groove it is big
Openend is filled with cylinder oil medium towards duplex sealing ring direction in small trapezoidal groove.When duplex sealing ring is close to cylinder
When inwall, the power of an inside extruding cylinder oil medium will be produced, now by cylinder oil media collapse to small trapezoidal recessed
In groove so that the density increase of cylinder oil medium, have the power for pushing out duplex sealing ring in turn so that duplex sealing ring
More it is close to cylinder inner wall, reaches and be more good sealing effectiveness.And in the case where duplex sealing ring is worn, from oil filler point
Inject cylinder oil medium so that duplex sealing ring is close to cylinder inner wall again, and this not only ensure that sealing, moreover it is possible to extends the work
The service life of plug.
Brief description of the drawings
Fig. 1 is the structural representation one of the air spring piston of the embodiment of the present invention；
Fig. 2 is the structural representation two of the air spring piston of the embodiment of the present invention；
Fig. 3 is the enlarged drawing of A and B in Fig. 2；
Fig. 4 is the outer straight comparison diagram of the diameter and duplex sealing ring 5 of upper piston body 1 or lower piston body 2.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not form limitation of the invention.It is in addition, disclosed below
As long as each embodiment of the invention in involved technical characteristic do not form conflict can each other and be mutually combined.
It refer to Fig. 1 to Fig. 4, air spring piston of the invention, including upper piston body 1, lower piston body 2 and be connected to institute
State the intermediate piston body 3 between upper piston body 1 and lower piston body 2.Upper piston body 1, the diameter of lower piston body 2 are consistent, and are more than
The diameter of the intermediate piston body 3.
The trapezoidal groove for accommodating duplex sealing ring 5 is formed between upper piston body 1, lower piston body 2 and the intermediate piston body 3
4, the big opening end of the trapezoidal groove 4 outwardly, i.e. the big opening end duplex sealing ring 5 of trapezoidal groove 4.The duplex sealing ring
5 cross section is consistent with the shape of the trapezoidal groove 4, and duplex sealing ring 5 could be put into trapezoidal groove 4 and seal without leaking by this
Gas, and duplex sealing ring 5 is rubber ring.
In the present embodiment, the overall diameter of duplex sealing ring 5 will be less times greater than the upper piston body 1 or lower piston body 2
Diameter, a of the scope being more than between 0.5-1.2mm in namely Fig. 4 length is between 0.5-1.2mm.
The duplex sealing ring 5 is located at the seal convexity that lateral ends are provided with two in axial direction upper distributions, respectively
For the first seal convexity 6 and the second seal convexity 7, formed between the first seal convexity 6 and the second seal convexity 7 and accommodate lubricating oil
Groove 8.First seal convexity 6 is consistent with the protrusion height of the second seal convexity 7, but cause not of uniform size, wherein the second sealing
Projection 7 is more than the first seal convexity 6.
The small trapezoidal groove 9 of along the circumferential direction upper distribution, the small trapezoidal groove 9 are provided with the intermediate piston body 3
Big opening end towards the direction of duplex sealing ring 5, cylinder oil medium is filled with the small trapezoidal groove 9, in upper piston
Oil filler point 10 is provided with body 1 or lower piston body 2, the oil filler point 10 connects with the small trapezoidal groove 9, the oil filler point 10
It is interior that described small one end of trapezoidal groove 9 is provided with check valve 11, cylinder oil medium small trapezoidal groove 9 of injection out of oil filler point 10
After interior, will not reversely it be flowed out in the presence of check valve 11.
Between reference picture 3, the side of trapezoidal groove 4 and the angle of bottom surface are 100~105 degree, in the present embodiment, most preferably
The side of trapezoidal groove and the angle of bottom surface be 102 degree.Between the ∠ b number of degrees are 100~105 degree in namely Fig. 3, most preferably
For 102 degree.
Between the side of small trapezoidal groove 9 and the angle of bottom surface are 115~125 degree, in the present embodiment, optimal small ladder
The side of connected in star and the angle of bottom surface are 115 degree.Between the ∠ c number of degrees are 115~125 degree in namely Fig. 3, most preferably
115 degree.
∠ c are more than ∠ b, and the number of degrees differ 13 degree, and by testing repeatedly, 13 degree can cause in small trapezoidal groove 9
Cylinder oil medium there is optimal propulsive thrust effect so that duplex sealing ring 5 is not in while cylinder inner wall is pressed close to
Stuck phenomenon.
It is used to accommodate work through being provided between the upper piston body 1, lower piston body 2 and the intermediate piston body 3
The groove 12 of stopper rod.
Above-mentioned air spring piston, duplex is accommodated due to being formed between upper piston body 1, lower piston body 2 and intermediate piston body 3
The trapezoidal groove 4 of sealing ring 5, and the big opening end of trapezoidal groove 4 is outwardly, and duplex sealing ring is placed with the trapezoidal groove 4
5, and the overall diameter of duplex sealing ring 5 is more than a diameter of 0.5-1.2mm of upper piston body 1 or lower piston body.By the gas spring
After piston is put into cylinder, because duplex sealing ring 5 is rubber ring, under the effect of the elastic force of duplex sealing ring 5, duplex sealing ring 5
It is close to cylinder inner wall, reaches good sealing effectiveness.
Because the duplex sealing ring 5 is located at the seal convexities that lateral ends are provided with two in axial direction upper distributions, two
The groove 8 for accommodating lubricating oil, when two seal convexities are close to cylinder inner wall, lubricating oil in groove are formed between individual seal convexity
When can play a part of compensation sealing, and mutually be extruded between two seal convexities so that groove diminishes, and lubrication oil density increases
Greatly, sealing effectiveness is better, and is not susceptible to stuck phenomenon.
Further, the small trapezoidal groove 9 being distributed on along the circumferential direction is provided with intermediate piston body 3, small trapezoidal groove 9
Big opening end is filled with cylinder oil medium towards the direction of duplex sealing ring 5 in small trapezoidal groove.When duplex sealing ring 5 is close to
When cylinder inner wall, the power for inwardly extruding cylinder oil medium will be produced, now by cylinder oil media collapse to small ladder
In connected in star 9 so that the density increase of cylinder oil medium, have the power for pushing out duplex sealing ring in turn so that duplex
The circle of sealing 5 is more close to cylinder inner wall, reaches and is more good sealing effectiveness.And in the case where duplex sealing ring 5 is worn,
Cylinder oil medium is injected from oil filler point 10 so that duplex sealing ring 5 is close to cylinder inner wall again, and this not only ensure that sealing,
The service life of the piston can also be extended.
Embodiments of the present invention are explained in detail above in association with accompanying drawing, but the invention is not restricted to described implementation
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen within protection scope of the present invention.
Claims (7)
- A kind of 1. air spring piston, it is characterised in that：Including upper piston body, lower piston body and be connected to the upper piston body with Intermediate piston body between lower piston body, the upper piston body, the diameter of lower piston body is consistent and is more than the intermediate piston body Diameter, between the upper piston body, lower piston body and the intermediate piston body formed accommodate duplex sealing ring trapezoidal groove, Outwardly, the overall diameter of the duplex sealing ring is more than a diameter of 0.5- of the upper piston body at the big opening end of the trapezoidal groove 1.2mm, the cross section of the duplex sealing ring is consistent with the shape of the trapezoidal groove, and the duplex sealing ring is located at outside one End is provided with the seal convexity of two in axial direction upper distributions, and the groove for accommodating lubricating oil is formed between the seal convexity, The protrusion height of two seal convexities is consistent, and one of seal convexity is more than another seal convexity；It is living among described It is provided with the small trapezoidal groove of along the circumferential direction upper distribution on cock body, the big opening end of the small trapezoidal groove is towards the duplex Sealing ring direction, the small trapezoidal groove is interior to be filled with cylinder oil medium, and note is provided with the upper piston body or lower piston body Oilhole, the oil filler point connect with the small trapezoidal groove, are provided with the oil filler point positioned at described small trapezoidal groove one end Check valve.
- 2. the piston of gas spring according to claim 1, it is characterised in that：The side of the trapezoidal groove and the folder of bottom surface Between angle is 100~105 degree.
- 3. the piston of gas spring according to claim 2, it is characterised in that：The side of the trapezoidal groove and the folder of bottom surface Angle is 102 degree.
- 4. the piston of gas spring according to claim 1, it is characterised in that：The side of the small trapezoidal groove and bottom surface Between angle is 115~125 degree.
- 5. the piston of gas spring according to claim 4, it is characterised in that：The side of the small trapezoidal groove and bottom surface Angle is 115 degree.
- 6. the piston of gas spring according to claim 1, it is characterised in that：Through the upper piston body, lower piston body And the groove for accommodating piston rod is provided between the intermediate piston body.
- 7. the piston of gas spring according to claim 1, it is characterised in that：The duplex sealing ring is rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751370.2A CN107401575A (en) | 2017-08-28 | 2017-08-28 | A kind of air spring piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751370.2A CN107401575A (en) | 2017-08-28 | 2017-08-28 | A kind of air spring piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107401575A true CN107401575A (en) | 2017-11-28 |
Family
ID=60398179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710751370.2A Pending CN107401575A (en) | 2017-08-28 | 2017-08-28 | A kind of air spring piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107401575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412738A (en) * | 2018-05-29 | 2018-08-17 | 苏州晨恩斯可络压缩机有限公司 | A kind of piston body |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3318208C1 (en) * | 1983-05-19 | 1984-10-31 | Daimler-Benz Ag, 7000 Stuttgart | Oil scraper ring, especially for reciprocating piston internal combustion engines |
| CN2158930Y (en) * | 1993-04-16 | 1994-03-16 | 刘成华 | Dynamic sealing compensation piston |
| CN2227765Y (en) * | 1995-08-24 | 1996-05-22 | 邵子玉 | Ladder-shape piston ring |
| CN2392006Y (en) * | 1999-06-23 | 2000-08-16 | 魏建宏 | Internal pressure type expansion piston |
| CN101865238A (en) * | 2010-02-23 | 2010-10-20 | 王宇光 | Composite piston body for seat gas lift |
| CN202251928U (en) * | 2011-09-08 | 2012-05-30 | 江阴市长龄机械制造有限公司 | Sealing structure of hydraulic piston |
| CN202812176U (en) * | 2012-05-23 | 2013-03-20 | 陈沧帆 | Y-shaped bidirectional seal leather ring for bidirectional pneumatic piston |
| CN103591081A (en) * | 2013-11-21 | 2014-02-19 | 天津科技大学 | Dynamic sealing structure with two-side pressurization function |
| CN104832424A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Concrete piston, pumping device adopting same and pump truck |
-
2017
- 2017-08-28 CN CN201710751370.2A patent/CN107401575A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3318208C1 (en) * | 1983-05-19 | 1984-10-31 | Daimler-Benz Ag, 7000 Stuttgart | Oil scraper ring, especially for reciprocating piston internal combustion engines |
| CN2158930Y (en) * | 1993-04-16 | 1994-03-16 | 刘成华 | Dynamic sealing compensation piston |
| CN2227765Y (en) * | 1995-08-24 | 1996-05-22 | 邵子玉 | Ladder-shape piston ring |
| CN2392006Y (en) * | 1999-06-23 | 2000-08-16 | 魏建宏 | Internal pressure type expansion piston |
| CN101865238A (en) * | 2010-02-23 | 2010-10-20 | 王宇光 | Composite piston body for seat gas lift |
| CN202251928U (en) * | 2011-09-08 | 2012-05-30 | 江阴市长龄机械制造有限公司 | Sealing structure of hydraulic piston |
| CN202812176U (en) * | 2012-05-23 | 2013-03-20 | 陈沧帆 | Y-shaped bidirectional seal leather ring for bidirectional pneumatic piston |
| CN103591081A (en) * | 2013-11-21 | 2014-02-19 | 天津科技大学 | Dynamic sealing structure with two-side pressurization function |
| CN104832424A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Concrete piston, pumping device adopting same and pump truck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412738A (en) * | 2018-05-29 | 2018-08-17 | 苏州晨恩斯可络压缩机有限公司 | A kind of piston body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171128 |
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| RJ01 | Rejection of invention patent application after publication |