CN206972654U - For improving the hydraulic cylinder of sealing property - Google Patents
For improving the hydraulic cylinder of sealing property Download PDFInfo
- Publication number
- CN206972654U CN206972654U CN201720892228.5U CN201720892228U CN206972654U CN 206972654 U CN206972654 U CN 206972654U CN 201720892228 U CN201720892228 U CN 201720892228U CN 206972654 U CN206972654 U CN 206972654U
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- sealing ring
- cylinder
- ring
- hydraulic cylinder
- hydraulic
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Abstract
A kind of hydraulic cylinder for being used to improve sealing property is the utility model is related to, two ends of cylinder barrel of the hydraulic cylinder are respectively arranged with back cylinder cover and front end housing, and the piston rod in the piston being arranged in cylinder barrel and one end insertion piston middle part, it is characterised in that：Also include the hydraulic pressure influent stream chamber for being arranged on the outer end of front end housing and the seal assembly of inside and being arranged in cylinder barrel, and it is arranged on the back cavity in back cylinder cover, the seal assembly includes the first sealing ring and the second sealing ring of installation on the piston rod, and the guide sleeve on the outside of the second sealing ring and the taper control valve from cylinder barrel in insertion front end housing, the lower region of the taper control valve are respectively arranged with the second sealing ring of insertion and the pipe fitting of hydraulic pressure influent stream intracavitary.The hydraulic cylinder pressure maintaining performance is good, and pressure-bearing is high, and sealing property is preferable, and friction factor is small, and can improve the service life of hydraulic cylinder, so as to reduce production cost, has ideal technique effect.
Description
Technical field
It the utility model is related to a kind of hydraulic cylinder for being used to improve sealing property.
Background technology
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, does straight reciprocating motion（Or oscillating motion）Hydraulic pressure perform member
Part.Its simple in construction, reliable operation, during with it to realize reciprocating motion, deceleration device can be removed from, and there is no drive gap,
Stable movement, therefore be used widely in various mechanical hydraulic systems；It is also power output and piston effective area and
The directly proportional linear motion type executive component of the pressure difference on its both sides；The most popular generally single-piston rod of existing hydraulic cylinder
Hydraulic cylinder, its structure are usually to be made up of the part such as dust ring, guide sleeve, sealing ring, cylinder barrel, piston rod, piston, cylinder cap, and
And existing single-piston-rod hydraulic cylinder only sets one layer of sealing ring on the inside of guide sleeve, in the enterprises such as steel production, a part
Piston rod type hydraulic cylinder is chronically under the very severe operating mode of the environment such as high temperature, high dust, dust-proof in hydraulic cylinder piston rod
Sealing ring, piston rod seals are very easy to damage, easily cause hydraulic cylinder to leak.In daily production, due to leaking frequently
And cause repeatedly to change hydraulic cylinder, to be forced to interrupt production every time, and changing a hydraulic cylinder needs 35 hours.If
More transducer set import sealing ring is expensive, cost is high, delivery cycle length, existing single living so as to cause the efficiency of production to reduce
Although stopper rod hydraulic cylinder can play a role in common operating mode, the sealing of its own is easily reduced, so as to cause zero
Part damage, hydraulic oil the problems such as leaking, therefore, the sealing property of existing single-piston-rod hydraulic cylinder need further lifting and
It is perfect.
Therefore, entitled " a kind of hydraulic cylinder for improving sealing property " of 104235112 No. A bulletins of Chinese patent provides
A kind of improvement project.The hydraulic cylinder includes cylinder body, and cylinder body both ends are sealed and installed with cylinder cap and cylinder bottom, coaxially slided in cylinder cap respectively
Dynamic to install a piston rod, one end of the piston rod is fixed with piston, oil inlet and oil-out is separately installed with cylinder body end walls,
The piston rod is solidly installed by nut and piston, moreover, it is close that three O types are coaxially installed with the outer rim of the piston
Seal；Moreover, the outer rim of the piston electroplates a layers of copper, the thickness of the layers of copper is 0.4mm；Moreover, the cylinder cap is a circle
Post sheath structure, and be coaxially mounted in cylinder body, the cylinder cap one end is coaxially installed with sealing ring, the other end and cylinder body with cylinder body
Between be co-axially mounted a cylindrical sleeve, the cylinder cap outboard end and piston rod are co-axially mounted a dust-proof cushion.The utility model improves close
The scheme of sealing property is that three O-ring seals are co-axially mounted in the outer rim of piston, although ensure that between piston and back cavity
Sealing, but the sealing property between influent stream chamber and guide sleeve is not improved, and influent stream chamber and guide sleeve it
Between the pressure often born it is maximum, therefore a kind of hydraulic cylinder of raising sealing property that proposes of the invention can effectively be lifted it is close
Sealing property needs further to inquire into.
The content of the invention
The purpose of this utility model be to provide it is a kind of using on the outside of piston set double-layer sealing structure mode solve it is close
A kind of hydraulic pressure for being used to improve sealing property for the problems such as sealing property is poor, plant equipment service life is low and raises production cost
Cylinder.
After two ends of cylinder barrel for the hydraulic cylinder for improving sealing property that the utility model is proposed are respectively arranged with
Piston rod in the middle part of cylinder cap and front end housing, and the piston being arranged in cylinder barrel and one end insertion piston, in addition to be arranged on
The outer end of front end housing and the seal assembly of inside and the hydraulic pressure influent stream chamber being arranged in cylinder barrel, and be arranged in back cylinder cover
Back cavity, the seal assembly include the first sealing ring and the second sealing ring of installation on the piston rod, and installed in second
Guide sleeve on the outside of sealing ring and the taper control valve from cylinder barrel in insertion front end housing, the lower region point of the taper control valve
The second sealing ring of insertion and the pipe fitting of hydraulic pressure influent stream intracavitary are not provided with.
First sealing ring and the second sealing ring are formed by the annular part of nesting, and the annular part includes being located at
The support ring and pressure ring of both sides, and the sealing ring among support ring and pressure ring is nested in, and the support ring, sealing ring and pressure
Pass through inner ring connection mutually nested with the v-depression that outer shroud junction is set between ring.
The side of the guide sleeve is provided with dust ring.
Hydraulics inlet and hydraulic output are respectively arranged with the outside of the front end housing and back cylinder cover.
The seal assembly being used to improve in the hydraulic cylinder of sealing property that the utility model is proposed is provided with the first sealing
Circle and the second sealing ring, and the second sealing ring is controlled by taper control valve, beneficial effect is：Under normal circumstances,
Two sealing rings are not involved in work, and its v-depression opening is in contraction state, can only as seal assembly does opposing pistons motion
When playing auxiliary guide effect, and causing the hydraulic cylinder to leak situations such as loosening occurs in the first sealing ring or damages, taper is controlled
Valve is opened, and hydraulic oil flows into pipe fitting by taper control valve, then enters guide sleeve looping pit and the second sealing ring phase by pipe fitting
Meet, so as to activate the second sealing ring, so that the first sealing ring and the second sealing ring play sealing function simultaneously, set to improve hydraulic pressure
Standby service life；In addition, first sealing ring and the second sealing ring are by support ring, sealing ring and pressure ring nested encryptions structure
Into, and pass through its inner ring company mutually nested with the v-depression that outer shroud junction is set between support ring, sealing ring and pressure ring
Connect so that the opening of sealing ring v-depression after being under pressure expands respectively inwards and outwards, so as to reach better seal effect
Fruit, therefore pressure maintaining performance is good under static state for the hydraulic cylinder that is proposed of the utility model, pressure-bearing is high in motion, sealing property
Preferably, friction factor is small, and can improve the service life of hydraulic cylinder, so as to reduce production cost, has ideal
Technique effect.
Brief description of the drawings：
Accompanying drawing 1 is the cross-section structure for being used to improve hydraulic cylinder one embodiment of sealing property that the utility model is proposed
Schematic diagram；
Accompanying drawing 2 is Fig. 1 ring structure schematic diagram；
Accompanying drawing 3 is the cross-sectional structure schematic diagram of support ring in Fig. 2, sealing ring and pressure ring.
Embodiment：
Referring to Fig. 1 to Fig. 3, these three width accompanying drawings provide the hydraulic pressure for being used to improve sealing property that the utility model is proposed
The cross-sectional view of cylinder one embodiment and the concrete structure schematic diagram of sealing ring.
The hydraulic cylinder includes cylinder barrel 1, and 1 two ends of the cylinder barrel are respectively arranged with back cylinder cover 11 and front end housing 12, with
And the piston rod 21 in the piston 2 in cylinder barrel 1 and the middle part of one end insertion piston 2 is arranged on, in addition to it is arranged on front end housing 12
The seal assembly 3 of outer end and inside and the hydraulic pressure influent stream chamber 13 being arranged in cylinder barrel 1, and it is arranged on returning in back cylinder cover 11
Chamber 14 is flowed, the seal assembly 3 includes the first sealing ring 4 and the second sealing ring 5 being arranged on piston rod 21, and is arranged on
The guide sleeve 31 in the outside of the second sealing ring 5 and the taper control valve 32 inserted from cylinder barrel 1 in front end housing 12, the taper control valve
32 effect is that it is possible to be operated to choose whether to activate the second sealing ring 5 by the switch of itself, and the taper controls
The lower region of valve 32 is respectively arranged with the pipe fitting 33 in the second sealing ring 5 of insertion and hydraulic pressure influent stream chamber 13；The guide sleeve 31
Side be provided with dust ring 34, and the outside of the front end housing 12 and back cylinder cover 11 is respectively arranged with hydraulics inlet 15 and hydraulic pressure
Outlet 16.
First sealing ring 4 is formed with the second sealing ring 5 by nested annular part, and the annular part includes position
Support ring 6 and pressure ring 7 in both sides, and be nested in the sealing ring 8 among support ring 6 and pressure ring 7, and it is the support ring 6, close
V-depression is provided between seal ring 8 and the inner ring of pressure ring 7 61 and outer shroud 62, inner ring 81 and outer shroud 82, inner ring 71 and outer shroud 72
63rd, v-depression 83 and v-depression 73, and pass through mutually nested side between v-depression 63, v-depression 83 and v-depression 73
Formula connects, and the sealing ring effect of this kind of structure is, is adjacent to using v-depression opening to piston rod direction, when what is be under pressure
When, its V-arrangement opening can be made to produce bigger pressure to piston rod direction, and its bigger sealing property of pressure is more preferable,
Effect using the first sealing ring 4 and the double sealing structure of the second sealing ring 5 is, strengthens hydraulic cylinder totality sealing property and effect
Fruit, under normal circumstances, the second sealing ring 5 are not involved in work, and its v-depression opening is in contraction state, is not opened, only with work
Plug assembly 2 does relatively reciprocating motion, and does not seal, and only plays auxiliary guide effect.Led when the first sealing ring 4 loosens or damaged
When causing hydraulic cylinder leakage, taper control valve 32 is opened, hydraulic pressure activates the second sealing ring 5, the He of the first sealing ring 4 by pipe fitting 33
Second sealing ring 5 simultaneously participates in work, improves the sealing property and service life of hydraulic cylinder, greatly reduces hydraulic pressure
Leak situations such as causing device damage, pressure maintaining performance is good under static state for the hydraulic cylinder of this kind of double sealing structure, is held in motion
Press performance stronger, and good seal performance, friction factor is small, is adapted to use in the adverse circumstances such as high temperature, high pressure, high dust.
Claims (4)
1. the hydraulic cylinder for improving sealing property, two ends of cylinder barrel of the hydraulic cylinder are respectively arranged with back cylinder cover and preceding cylinder
Piston rod in the middle part of lid, and the piston being arranged in cylinder barrel and one end insertion piston, it is characterised in that：Also include being arranged on
The outer end of front end housing and the seal assembly of inside and the hydraulic pressure influent stream chamber being arranged in cylinder barrel, and be arranged in back cylinder cover
Back cavity, the seal assembly include the first sealing ring and the second sealing ring of installation on the piston rod, and installed in second
Guide sleeve on the outside of sealing ring and the taper control valve from cylinder barrel in insertion front end housing, the lower region point of the taper control valve
The second sealing ring of insertion and the pipe fitting of hydraulic pressure influent stream intracavitary are not provided with.
2. hydraulic cylinder according to claim 1, it is characterised in that：First sealing ring and the second sealing ring are by nesting
Annular part form, the annular part includes the support ring and pressure ring positioned at both sides, and is nested in support ring and pressure ring
Middle sealing ring, and the v-depression set between the support ring, sealing ring and pressure ring by inner ring and outer shroud junction
Mutually nested connection.
3. hydraulic cylinder according to claim 1, it is characterised in that：The side of the guide sleeve is provided with dust ring.
4. hydraulic cylinder according to claim 1, it is characterised in that：It is respectively arranged with the outside of the front end housing and back cylinder cover
Hydraulics inlet and hydraulic output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720892228.5U CN206972654U (en) | 2017-07-21 | 2017-07-21 | For improving the hydraulic cylinder of sealing property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720892228.5U CN206972654U (en) | 2017-07-21 | 2017-07-21 | For improving the hydraulic cylinder of sealing property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206972654U true CN206972654U (en) | 2018-02-06 |
Family
ID=61397281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720892228.5U Expired - Fee Related CN206972654U (en) | 2017-07-21 | 2017-07-21 | For improving the hydraulic cylinder of sealing property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206972654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461376A (en) * | 2017-07-21 | 2017-12-12 | 本钢板材股份有限公司 | For improving the hydraulic cylinder of sealing property |
| CN112609031A (en) * | 2020-12-09 | 2021-04-06 | 本钢板材股份有限公司 | Hydraulic clay gun |
-
2017
- 2017-07-21 CN CN201720892228.5U patent/CN206972654U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461376A (en) * | 2017-07-21 | 2017-12-12 | 本钢板材股份有限公司 | For improving the hydraulic cylinder of sealing property |
| CN112609031A (en) * | 2020-12-09 | 2021-04-06 | 本钢板材股份有限公司 | Hydraulic clay gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 Termination date: 20200721 |