CN105179378B - A kind of sealing piston of hydraulic cylinder device under worst hot case - Google Patents
A kind of sealing piston of hydraulic cylinder device under worst hot case Download PDFInfo
- Publication number
- CN105179378B CN105179378B CN201510602244.1A CN201510602244A CN105179378B CN 105179378 B CN105179378 B CN 105179378B CN 201510602244 A CN201510602244 A CN 201510602244A CN 105179378 B CN105179378 B CN 105179378B
- Authority
- CN
- China
- Prior art keywords
- piston
- sealing ring
- steel disc
- model steel
- ring
- 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
- Sealing Devices (AREA)
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention provides the sealing piston of hydraulic cylinder device under a kind of worst hot case, mainly including piston, permanent model steel disc, sealing ring A, sealing ring B, elastic ring and piston rod, permanent model steel disc, elastic ring, sealing ring A and sealing ring B are sequentially arranged in pistion recess.The permanent model steel disc being characterized in pistion recess suppresses its expansion, and the sealing ring of fluorubber material realizes refractory seals.The present invention is embedded in permanent model steel disc by pistion recess, prevents piston inflating clip cylinder；By the way that the sealing ring A and sealing ring B of fluorubber material are mounted side by side on elastic ring, elevated-temperature seal is realized；Radiated in time by all-aluminium piston.
Description
Technical field
The present invention relates to the sealing piston of hydraulic cylinder device under a kind of worst hot case, more particularly to one kind is by recessed in piston
Groove is embedded in permanent model steel disc, prevents piston inflating clip cylinder；By be mounted side by side on elastic ring fluorubber material sealing ring A and
Sealing ring B, realizes elevated-temperature seal；Radiated in time by all-aluminium piston, belong to the technology of hydraulic cylinder piston refractory seals
Research and development field.
Background technology
Hydraulic energy is changed into mechanical energy by hydraulic cylinder using the straight reciprocating motion of piston.But under worst hot case, part
Easily there is piston thermal expansion deformation, the phenomenon of card cylinder in hydraulic cylinder, or even piston seal failure occurs and cause internal leakage, so as to drop
The performance of low hydraulic cylinder.
Therefore, easily there is dilatancy, card cylinder and seal failure under worst hot case for existing section hydraulic cylinder piston
The problems such as, should be considered from the structure of hydraulic cylinder piston and sealing device, design a kind of resistant to elevated temperatures piston close
Seal apparatus.
The content of the invention
Easily there is dilatancy, card cylinder and seal failure for existing section hydraulic cylinder piston under worst hot case in the present invention
The problems such as, there is provided the sealing piston of hydraulic cylinder device under a kind of a kind of worst hot case that can effectively solve the above problems.
Sealing piston of hydraulic cylinder device under a kind of worst hot case of the invention uses following technical scheme：
Sealing piston of hydraulic cylinder device under a kind of worst hot case, mainly including piston, permanent model steel disc, sealing ring A, sealing
Circle B, elastic ring and piston rod, piston rod head end is provided with the shaft shoulder and external screw thread, and is sequentially installed with circlip, work from inside to outside
Plug, elastic washer and locking nut, permanent model steel disc, elastic ring, sealing ring A and sealing ring B are sequentially arranged in pistion recess；
The piston uses aluminium alloy, piston lateral surface to be provided with 3 grooves；The permanent model steel disc is nickeliferous 33%~36% Low Carbon Iron nickel
Alloy, permanent model steel disc section is in " u "-shaped and embedded pistion recess；The elastic ring uses General Purpose Rubber material, and its section is
Rectangle and on permanent model steel disc；The sealing ring A and sealing ring B uses fluorubber material, its rectangular cross-section and side by side
On elastic ring.
Piston is used aluminium alloy by the present invention, by the good advantage of aluminium alloy thermal conductivity so that the piston under hot operation
Can radiate in time.
The present invention is embedded in permanent model steel disc in pistion recess, suppresses piston expansion by this design, prevents card cylinder, be i.e. profit
The deflection of the big piston of the coefficient of expansion is pind down with low-expansion permanent model steel disc.Such as under worst hot case, although aluminium is closed
The piston of gold has preferable heat conductivity, and piston can be made to radiate in time, but lasting high temperature may make pistion recess both sides
Piston outer lug A or piston internal projection A or piston internal projection B or piston outer lug B locally expand, cause seizing of piston,
The performance of hydraulic cylinder is reduced, and the permanent model steel disc that groove is embedded in plays bimetallic effect, the permanent model steel disc coefficient of expansion is low,
Only the 1/10 of aluminium alloy, in aluminium alloy dilatancy, deforming the permanent model steel disc of very little can hinder the deformation of all-aluminium piston,
So as to play the expansion of suppression piston, prevent card cylinder phenomenon.
The present invention uses the sealing ring A and sealing ring B of fluorubber material at piston seal, by the close of fluorubber material
Sealing of the hydraulic cylinder under worst hot case is realized in seal, and this is that it uses temperature because the heat-resisting quantity of fluorubber is better than silicon rubber
Degree is up to 250 DEG C；And double containment design side by side, using the friction between sealing ring A and sealing ring B, by sealing ring A or sealing
The elasticity of circle B can be consumed in the form of frictional heat energy, and eliminate sealing ring A or sealing ring B reduces sealing effectiveness because of elastic deformation；
Additionally, install the elastic ring of General Purpose Rubber material under sealing ring A and sealing ring B, play by the elastic deformation of elastic ring and
Frictional heat eliminates the deformation of sealing ring A or sealing ring B.
The beneficial effects of the invention are as follows：Permanent model steel disc is embedded in by pistion recess, piston inflating clip cylinder is prevented；Pass through
The sealing ring A and sealing ring B of fluorubber material are mounted side by side on elastic ring, elevated-temperature seal is realized；By all-aluminium piston come
Radiating in time.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the close-up schematic view at inventive piston sealing.
Wherein：1st, locking nut, 2, cylinder barrel, 3, elastic washer, 4, sealing ring A, 5, sealing ring B, 6, elastic ring, 7, permanent model
Steel disc, 8, piston, 9, circlip, 10, piston rod, 11, piston outer lug A, 12, piston internal projection A, 13, piston internal projection
B, 14, piston outer lug B.
Specific embodiment
Embodiment：
As shown in figure 1, the sealing piston of hydraulic cylinder device under a kind of worst hot case of the invention, mainly include piston 8,
Permanent model steel disc 7, sealing ring A 4, sealing ring B 5, elastic ring 6 and piston rod 10, the head end of piston rod 10 are provided with the shaft shoulder and external screw thread,
And it is sequentially installed with circlip 9, piston 8, elastic washer 3 and locking nut 1 from inside to outside, it is permanent model steel disc 7, elastic ring 6, close
Seal A 4 and sealing ring B 5 are sequentially arranged in the groove of piston 8.
Piston 8 uses aluminium alloy, by the good advantage of aluminium alloy thermal conductivity so that the piston 8 under hot operation can be in time
Radiating.The lateral surface of piston 8 is provided with 3 grooves.
With reference to shown in Fig. 2, permanent model steel disc 7 is nickeliferous 33%~36% low-carbon (LC) iron-nickel alloy, and the permanent section of model steel disc 7 is " U "
In shape and the embedded groove of piston 8.During work, this design can suppress piston 9 and expand, prevents card cylinder, i.e., using low-expansion coefficient
Permanent model steel disc 7 pin down the deflection of the big piston 8 of the coefficient of expansion.Such as under worst hot case, although the piston 8 of aluminium alloy has
There is preferable heat conductivity, piston 8 can be made to radiate in time, but lasting high temperature may make outside the piston of the groove both sides of piston 8
The local expansions of raised A 11 or piston internal projection A 12 or piston internal projection B 13 or piston outer lug B 14, cause piston 8
Card cylinder, reduces the performance of hydraulic cylinder, and the permanent model steel disc 7 that groove is embedded in plays bimetallic effect, and permanent model steel disc 7 expands
Coefficient is low, only the 1/10 of aluminium alloy, and in aluminium alloy dilatancy, the permanent model steel disc 7 for deforming very little can hinder aluminium alloy to live
The deformation of plug 8, expands so as to play suppression piston 8, prevents card cylinder phenomenon.
Elastic ring 6 is using General Purpose Rubber material, its rectangular cross-section and on permanent model steel disc 7；Sealing ring A 4 and close
Seal B 5 uses fluorubber material, its rectangular cross-section and is mounted side by side on elastic ring 6.Fluorine rubber is used at the sealing of piston 8
The sealing ring A 4 and sealing ring B 5 of glue material, during work, realize hydraulic cylinder in high temperature work by the sealing ring of fluorubber material
Sealing under condition, this is that its temperature in use is up to 250 DEG C because the heat-resisting quantity of fluorubber is better than silicon rubber；And side by side double
Seal Design, using the friction between sealing ring A 4 and sealing ring B 5, can be with by the elasticity of sealing ring A 4 or sealing ring B 5
The form consumption of frictional heat energy, eliminate sealing ring A 4 or sealing ring B 5 reduces sealing effectiveness because of elastic deformation；Additionally, close
5 times elastic rings 6 of installation General Purpose Rubber material of seal A 4 and sealing ring B, play the elastic deformation by elastic ring 6 and friction
Heat eliminates the deformation of sealing ring A 4 or sealing ring B 5.
Claims (1)
1. the sealing piston of hydraulic cylinder device under a kind of worst hot case, mainly including piston, permanent model steel disc, sealing ring A, sealing ring
B, elastic ring and piston rod, piston rod head end are provided with the shaft shoulder and external screw thread, and are sequentially installed with circlip, work from inside to outside
Plug, elastic washer and locking nut, permanent model steel disc, elastic ring, sealing ring A and sealing ring B are sequentially arranged in pistion recess；
It is characterized in that：The piston uses aluminium alloy, piston lateral surface to be provided with 3 grooves；The permanent model steel disc be nickeliferous 33%~
36% low-carbon (LC) iron-nickel alloy, permanent model steel disc section is in " u "-shaped and embedded pistion recess；The elastic ring uses General Purpose Rubber
Material, its rectangular cross-section and on permanent model steel disc；The sealing ring A and sealing ring B uses fluorubber material, its section
For rectangle and it is mounted side by side on elastic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510602244.1A CN105179378B (en) | 2015-09-21 | 2015-09-21 | A kind of sealing piston of hydraulic cylinder device under worst hot case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510602244.1A CN105179378B (en) | 2015-09-21 | 2015-09-21 | A kind of sealing piston of hydraulic cylinder device under worst hot case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179378A CN105179378A (en) | 2015-12-23 |
| CN105179378B true CN105179378B (en) | 2017-06-23 |
Family
ID=54901707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510602244.1A Expired - Fee Related CN105179378B (en) | 2015-09-21 | 2015-09-21 | A kind of sealing piston of hydraulic cylinder device under worst hot case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179378B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055883U (en) * | 1989-07-18 | 1990-04-11 | 吕复兴 | Overlapped piston-ring sealing device |
| CN1545597A (en) * | 2001-07-23 | 2004-11-10 | 昭和电工株式会社 | Piston for internal combustion engine and method of manufacturing the same |
| CN202074027U (en) * | 2011-06-01 | 2011-12-14 | 三一重工股份有限公司 | Hydraulic oil cylinder and piston body of same |
| CN203308828U (en) * | 2013-05-17 | 2013-11-27 | 苏州东风益方汽车零部件有限公司 | High-stability connecting rod |
| CN205064441U (en) * | 2015-09-21 | 2016-03-02 | 济南大学 | Pneumatic cylinder piston packaging device under high temperature working condition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2790464B2 (en) * | 1988-09-07 | 1998-08-27 | イズミ工業株式会社 | Aluminum alloy piston for internal combustion engine and method of manufacturing the same |
| US8813357B2 (en) * | 2010-10-06 | 2014-08-26 | GM Global Technology Operations LLC | Piston with bi-metallic dome |
-
2015
- 2015-09-21 CN CN201510602244.1A patent/CN105179378B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055883U (en) * | 1989-07-18 | 1990-04-11 | 吕复兴 | Overlapped piston-ring sealing device |
| CN1545597A (en) * | 2001-07-23 | 2004-11-10 | 昭和电工株式会社 | Piston for internal combustion engine and method of manufacturing the same |
| CN202074027U (en) * | 2011-06-01 | 2011-12-14 | 三一重工股份有限公司 | Hydraulic oil cylinder and piston body of same |
| CN203308828U (en) * | 2013-05-17 | 2013-11-27 | 苏州东风益方汽车零部件有限公司 | High-stability connecting rod |
| CN205064441U (en) * | 2015-09-21 | 2016-03-02 | 济南大学 | Pneumatic cylinder piston packaging device under high temperature working condition |
Non-Patent Citations (1)
| Title |
|---|
| 工程分析活塞的质量特性;刘世英 刘涛;《内燃机配件》;19990331(第3期);第32-35页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105179378A (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105179378B (en) | A kind of sealing piston of hydraulic cylinder device under worst hot case | |
| CN203670884U (en) | Hard seal ball valve with trapezoid graphite seal rings | |
| CN205064441U (en) | Pneumatic cylinder piston packaging device under high temperature working condition | |
| CN204851842U (en) | Pneumatic cylinder cooling system | |
| CN102364168A (en) | Bidirectional internal sealing structure of mechanical vibrator | |
| CN206530416U (en) | Motorcycle engine structure | |
| CN112012800B (en) | Seal structure of grid tray and braid combination | |
| CN205400915U (en) | Motorcycle water -cooling engine cylinder block | |
| CN201627948U (en) | High-temperature high-pressure flat-plate gate valve | |
| CN212960161U (en) | Packing seal structure of electric steam injection valve and electric steam injection valve | |
| CN105201958A (en) | High-temperature-resisting piston connecting device for hydraulic cylinder | |
| CN205064442U (en) | High temperature resistance pneumatic cylinder hinge joint device | |
| CN202746746U (en) | Self-compensating high-temperature fixed ball valve rod seal structure | |
| CN203258094U (en) | Sphere surface high-temperature and abrasion-resisting alloy coating used for hard seal ball valve | |
| CN203940038U (en) | Solenoid directional control valve and valve auxiliary structure | |
| CN202349198U (en) | Bidirectional internal seal structure of mechanical vibrator | |
| CN203454718U (en) | Kiln head sealing structure for rotary kiln | |
| RU2535598C1 (en) | Ice piston seal | |
| CN208397088U (en) | A kind of mine hoisting container and connecting pin of the suspension arrangement with resilient sleeve | |
| CN201661696U (en) | Three-eccentric butterfly valve | |
| CN202900747U (en) | Mechanical seal device capable of enabling cooling liquid to be added | |
| CN206845955U (en) | A kind of Outside screw stem rising through handwheel type gate valve position-limit mechanism | |
| CN202465745U (en) | Blast furnace body cooling device | |
| CN205504054U (en) | Sealed valve holder structure of fixed ball valve memory alloy | |
| CN220286502U (en) | Top-mounted U-shaped high-temperature wear-resistant ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170623 Termination date: 20190921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |