CN206468736U - The sealing structure of oil-pressure damper - Google Patents
The sealing structure of oil-pressure damper Download PDFInfo
- Publication number
- CN206468736U CN206468736U CN201720136193.2U CN201720136193U CN206468736U CN 206468736 U CN206468736 U CN 206468736U CN 201720136193 U CN201720136193 U CN 201720136193U CN 206468736 U CN206468736 U CN 206468736U
- Authority
- CN
- China
- Prior art keywords
- oil
- pressure
- sealing structure
- piston rod
- low pressure
- 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
Abstract
The sealing structure of oil-pressure damper, including the movable sealing structure between the static seal structure and piston rod and guided bearing seat between guided bearing seat and oil storage cylinder upper end, movable sealing structure is included by the low pressure seal circle of piston rod outer end and by the inner high-pressure seal ring of piston rod, it is characterized in that having transition long-pending oil groove between described low pressure seal circle and high-pressure seal ring, described transition long-pending oil groove is communicated by drain path with the low pressure oil pocket of oil storage cylinder.Transition long-pending oil groove between low pressure seal circle and high-pressure seal ring is that low pressure oil pocket is connected by the low oil pressure area of drain path and oil storage cylinder by the utility model, pressure release is carried out equivalent to transition long-pending oil groove, low pressure seal circle is not stressed impact, reach that oil-pressure damper seals the purpose not failed for a long time.
Description
Technical field
The utility model is related to a kind of sealing structure of oil-pressure damper, the inner sealing for oil-pressure damper.
Background technology
Rail vehicles oil-pressure damper is the pass of the railway transportation equipments such as electric locomotive, diesel locomotive, subway train
Key member, its effect slows down the vibration of rolling stock in the process of moving, it is ensured that rolling stock driving safety, improves train comfortable
Degree.Oil-pressure damper level is longitudinally mounted between bogie and car body, for suppressing the vibration of rolling stock.Due to vehicle oil
Pressure damper is all to use hydraulic oil as damping element, so the dust-proof and sealing of hydraulic oil will be very crucial factor,
Once fluid is leaked, its damping characteristic can greatly change so that shock absorber performance depreciation even fails.But existing car
Oil-pressure damper, because pressure operationally is too high, so whether fine sealing is total, it is difficult to accomplish zero leakage.
Utility model content
The sealing structure for the oil-pressure damper that the utility model is provided, simple in construction, sealing effectiveness more preferably, reaches that oil pressure subtracts
The device that shakes seals the purpose not failed for a long time.
The technical solution of the utility model is：In the sealing structure of oil-pressure damper, including guided bearing seat and oil storage cylinder
The movable sealing structure between static seal structure and piston rod and guided bearing seat between end, movable sealing structure includes leaning on piston
The low pressure seal circle of bar outer end and the high-pressure seal ring by piston rod the inner, it is characterised in that described low pressure seal circle and high pressure
There is transition long-pending oil groove, described transition long-pending oil groove is communicated by drain path with the low pressure oil pocket of oil storage cylinder between sealing ring.
It is preferred that, described drain path is the tapered channel coaxial with piston rod.
It is preferred that, described high-pressure seal ring makees the polytetrafluoroethylene (PTFE) lattice of force application element to enclose for rubber ring with o.
It is preferred that, described low pressure seal circle is the lip rubber seal circle with skeleton for making elastic compensating with spring.
It is preferred that, formed between described guided bearing seat and oil storage cylinder upper end to the recessed of the side opening of piston rod outer end one
Groove, described static seal structure is arranged in described groove, from inside to outside including V-type packing ring, O-ring seal, pad and outer
Blind nut, described O-ring seal is respectively arranged at the inner annular edge and outer shroud edge of V-type packing ring, described outer blind nut and oil storage
The thread in inner cavity of cylinder upper end coordinates compress gasket.
It is preferred that, described drain path width is 2-4mm.
It is preferred that, described piston rod surface has cermet superfines sprayed coating.
Transition long-pending oil groove between low pressure seal circle and high-pressure seal ring is passed through drain path and oil storage cylinder by the utility model
Low oil pressure area be low pressure oil pocket connection, equivalent to transition long-pending oil groove carry out pressure release, when piston rod is stretched out, pressure cylinder
Interior hydraulic oil（Maximum pressure can be to 10~25MPa）After one of high-pressure seal ring, the fluid of Micro blazed-grating reaches high densification
Transition long-pending oil groove between seal and low pressure seal circle, the low pressure oil pocket of oil storage cylinder is flowed to through drain path；When piston rod is inside
During compression, the hydraulic oil in pressure cylinder also passes through Micro blazed-grating fluid after high-pressure seal ring and reaches high-pressure seal ring and low pressure seal
Transition long-pending oil groove between circle, the low pressure oil pocket of oil storage cylinder is flowed to through drain path.Due to the in-oil cylinder oil of the low pressure of oil storage cylinder
Pressure is relatively low, and pressure changes between -0.03Mpa~0.05Mpa, and the sealed pressure of low pressure seal circle is also equivalent to oil storage cylinder
Low pressure oil pocket pressure, low pressure seal circle is not stressed impact, reach that oil-pressure damper seals the purpose not failed for a long time.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model will be further described by accompanying drawing 1 and embodiment below.
As shown in figure 1, quiet between the sealing structure of oil-pressure damper, including guided bearing seat 1 and the upper end of oil storage cylinder 2
Movable sealing structure between sealing structure and piston rod 3 and guided bearing seat 1, movable sealing structure is included by the outer end of piston rod 3
Low pressure seal circle 4 and the high-pressure seal ring 5 by the inner of piston rod 3, it is characterised in that described low pressure seal circle 4 and high pressure sealing
There is transition long-pending oil groove 6, the low pressure oil pocket A phases that described transition long-pending oil groove 6 passes through drain path 7 and oil storage cylinder 2 between circle 5
It is logical.Described drain path 7 is the tapered channel coaxial with piston rod 3, and the described width D of drain path 7 is 2-4mm.It is described
High-pressure seal ring 4 make the polytetrafluoroethylene (PTFE) lattice of force application element to enclose for rubber ring with o.Described low pressure seal circle 5 is band
Spring makees the lip rubber seal circle with skeleton of elastic compensating.
When piston rod 3 is stretched out, the hydraulic oil in pressure cylinder（Maximum pressure can be to 10~25MPa）By high together
After pressure seal ring, the fluid of Micro blazed-grating reaches the transition long-pending oil groove 6 between high-pressure seal ring 5 and low pressure seal circle 4, logical through draining
Road 7 flows to the low pressure oil pocket A of oil storage cylinder；When piston rod 3 inwardly compresses, the hydraulic oil in pressure cylinder also passes through high pressure sealing
Micro blazed-grating fluid reaches the transition long-pending oil groove 6 between high-pressure seal ring 5 and low pressure seal circle 4 after circle 5, is flowed to through drain path 7
The low pressure oil pocket A of oil storage cylinder 2, the width D of drain path 7 can meet the requirement of fluid flowing velocity for 2-4mm.Due to oil storage cylinder 2
Low pressure oil pocket A in oil pressure it is relatively low, pressure changes between -0.03Mpa~0.05Mpa, and low pressure seal circle 4 sealedly press
Power is also equivalent to the pressure of the low pressure oil pocket of oil storage cylinder, low pressure seal circle 4 is not stressed impact, reach to seal not for a long time
The purpose of failure.Drain path 7 uses the tapered channel coaxial with piston rod 3, and fluid can be from the optional position of transition long-pending oil groove 6
Low pressure oil pocket A is flowed to through drain path 7.
Wherein, formed between described guided bearing seat 1 and the upper end of oil storage cylinder 2 to the side opening of 3 outer end of piston rod one
Groove 1.1, described static seal structure is arranged in described groove 1.1, from inside to outside including V-type packing ring 8, O-ring seal
9th, pad 10 and outer blind nut 11, described O-ring seal 9 are respectively arranged at the inner annular edge and outer shroud edge of V-type packing ring 8, institute
The outer blind nut 11 stated and the thread in inner cavity of the upper end of oil storage cylinder 2 coordinate compress gasket 10.V-type packing ring 8 is molded by mould punching,
It can ensure in production in enormous quantities, the uniformity of its morpheme size, make the decrement of O-ring seal 9 stable 20%~25%
Between, it so both ensure that the sealed reliability of O-ring seal 9 in turn ensure that its sealed long-life.Outer blind nut 11 is sealing
Locking blind nut, the effect of the pad 10 between outer blind nut 11 and O-ring seal 9 is to ensure to enter rotating outer blind nut 11
Drawing and destruction O-ring seal 9 are not pulled during row locking, it is ensured that sealed reliability and validity.
Wherein, the described surface of piston rod 3 has cermet superfines sprayed coating, improves the wear-resisting longevity of piston rod
Life, and make the property in sealing contact of piston rod and high-pressure seal ring and high-pressure seal ring more preferable.
Completely description is carried out to the technical scheme of the utility model embodiment, it is necessary to which explanation is to be retouched above in association with accompanying drawing
The embodiment stated is only a part of embodiment of the utility model, is made based on the embodiment in the utility model, this area is common
The every other embodiment that technical staff is obtained on the premise of creative work is not made, belongs to the utility model guarantor
The scope of shield.
Claims (7)
1. the sealing structure of oil-pressure damper, including guided bearing seat（1）With oil storage cylinder（2）Static seal structure between upper end
And piston rod（3）With the movable sealing structure between guided bearing seat (1), movable sealing structure includes leaning on piston rod（3）Outer end it is low
Pressure seal ring（4）With by piston rod（3）Inner high-pressure seal ring（5）, it is characterised in that described low pressure seal circle（4）And height
Pressure seal ring（5）Between have transition long-pending oil groove（6）, described transition long-pending oil groove（6）Pass through drain path（7）With oil storage cylinder
（2）Low pressure oil pocket（A）Communicate.
2. the sealing structure of oil-pressure damper according to claim 1, it is characterised in that described drain path（7）For with
Piston rod（3）Coaxial tapered channel.
3. the sealing structure of oil-pressure damper according to claim 1, it is characterised in that described high-pressure seal ring（4）For
Rubber ring with o makees the polytetrafluoroethylene (PTFE) lattice of force application element to enclose.
4. the sealing structure of oil-pressure damper according to claim 1, it is characterised in that described low pressure seal circle（5）For
Make the lip rubber seal circle with skeleton of elastic compensating with spring.
5. the sealing structure of oil-pressure damper according to claim 1, it is characterised in that described guided bearing seat（1）With
Oil storage cylinder（2）Formed between upper end to piston rod（3）The groove of the side opening of outer end one（1.1）, described static seal structure sets
It is placed in described groove（1.1）In, from inside to outside including V-type packing ring（8）, O-ring seal（9）, pad（10）With outer blind nut
（11）, described O-ring seal（9）It is respectively arranged at V-type packing ring（8）Inner annular edge and outer shroud edge, described outer blind nut
（11）With oil storage cylinder（2）The thread in inner cavity of upper end coordinates compress gasket（10）.
6. the sealing structure of oil-pressure damper according to claim 2, it is characterised in that described drain path（7）Width
For 2-4mm.
7. the sealing structure of the oil-pressure damper according to any one of claim 1 to 6, it is characterised in that described piston rod
（3）Surface has cermet superfines sprayed coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720136193.2U CN206468736U (en) | 2017-02-15 | 2017-02-15 | The sealing structure of oil-pressure damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720136193.2U CN206468736U (en) | 2017-02-15 | 2017-02-15 | The sealing structure of oil-pressure damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206468736U true CN206468736U (en) | 2017-09-05 |
Family
ID=59708229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720136193.2U Active CN206468736U (en) | 2017-02-15 | 2017-02-15 | The sealing structure of oil-pressure damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206468736U (en) |
-
2017
- 2017-02-15 CN CN201720136193.2U patent/CN206468736U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203348407U (en) | Externally-arranged adjustable damper | |
| CN101016927A (en) | Seal structure of oil-pressure shock absorber | |
| CN207111821U (en) | Anti- snake movement oil pressure shock absorber used for rail vehicle | |
| CN206468736U (en) | The sealing structure of oil-pressure damper | |
| CN204403250U (en) | A kind of sensing frequency conversion vibration damper | |
| CN201221587Y (en) | Seal device of oil pressure vibration damper | |
| CN102777531B (en) | Pressure-stabilizing variable frequency damper | |
| CN104500636A (en) | Sensing variable-frequency vibration absorber | |
| CN209444739U (en) | Oil-pressure damper | |
| CN203948668U (en) | Cage equilibrium valve | |
| CN205059637U (en) | Novel retarder | |
| CN203717914U (en) | Semi-floating type side door sealing ring | |
| CN206513525U (en) | A kind of piston packing ring of oilless air compressor | |
| CN206299844U (en) | A kind of high-pressure check valve of low leakage | |
| CN105673763A (en) | Inflatable type damper guider sealing structure | |
| CN203979261U (en) | A kind of vibration damper sealing system | |
| CN203548915U (en) | Sealing device for hydraulic retarder | |
| CN205155015U (en) | Rolling stock hydraulic shock absorber seal structure | |
| CN205423673U (en) | Inflatable bumper shock absorber director seal structure | |
| CN203161956U (en) | Sealing structure for reducing damping of piston of two-way jar accelerator | |
| CN202732820U (en) | Pressure-stabilizing variable-frequency damper | |
| CN205401575U (en) | Inflatable bumper shock absorber floating piston seal structure | |
| CN207278859U (en) | A kind of built-up piston | |
| CN107178531B (en) | A kind of Zero-leakage hydraulic lock | |
| CN111075877A (en) | Asymmetric oil pressure shock absorber for railway vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |