CN101603598A - A kind of auxiliary piston method for sealing of oil cylinder - Google Patents
A kind of auxiliary piston method for sealing of oil cylinder Download PDFInfo
- Publication number
- CN101603598A CN101603598A CNA2009100439681A CN200910043968A CN101603598A CN 101603598 A CN101603598 A CN 101603598A CN A2009100439681 A CNA2009100439681 A CN A2009100439681A CN 200910043968 A CN200910043968 A CN 200910043968A CN 101603598 A CN101603598 A CN 101603598A
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- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of auxiliary piston method for sealing of oil cylinder, near the oil cylinder ante-chamber end floating seal is installed at the oil cylinder guide sleeve, outer cylinder body and outer piston are installed on the cylinder tube external cylindrical surface, outer piston can be done moving back and forth of certain distance vertically in outer cylinder body, one end of outer cylinder body has oil pipe to be connected with an oil groove by oil circuit, and the other end of outer cylinder body has oil pipe to be connected with the oil cylinder back cavity.Be separately installed with forward and backward piston ring at two of piston, be processed with inner cylinder body at piston rod near inside, oil cylinder back cavity end axle center, inner cylinder body inside is equipped with the inner carrier ring, inner carrier can be done moving back and forth of certain distance vertically in inner cylinder body, the two ends of inner cylinder body have oil circuit to be connected with two oil grooves respectively.The auxiliary piston method for sealing of this oil cylinder by the moving of inner carrier and outer piston, makes pressure reduction before and after each soft seal circle of oil cylinder far below traditional oil cylinder, thereby each soft seal circle wearing and tearing is slowed down when cylinder action, improves the working life of oil cylinder thus.
Description
Technical field
The present invention relates to a kind of encapsulating method of hydraulic jack, is a kind of auxiliary piston method for sealing of oil cylinder.
Background technique
Hydraulic jack is as the executive component of hydraulic system, and its topmost failure mode is that cylinder seal lost efficacy.Present seal form exists maximum deficiency to be: in cylinder action,, cause seal ring to be easy to generate crackle because cylinder seal two ends pressure reduction is big, and rate of wear quickening, thereby the oil cylinder life-span is reduced.
So, can effectively reduce the encapsulating method of the two ends pressure reduction of seal ring when seeking a kind of cylinder action, thereby prolong the working life of oil cylinder, it is extremely important to have become.
Summary of the invention
The object of the present invention is to provide a kind of encapsulating method of seal ring two ends pressure reduction can effectively reduce cylinder action the time, is a kind of auxiliary piston method for sealing of oil cylinder.
For achieving the above object, the technological scheme taked of the present invention is:
When the present invention is used as the oil cylinder piston rod seal, keep under the constant prerequisite of former rod seal, near the oil cylinder ante-chamber end floating seal is installed at the oil cylinder guide sleeve, the oil cylinder guide sleeve is processed with oil groove near the floating seal place, one outer cylinder body is installed on the cylinder tube external cylindrical surface, outer piston is installed in the outer cylinder body, seal ring is housed on the outer piston, outer piston can be done moving back and forth of certain distance vertically in outer cylinder body.One end of outer cylinder body has oil pipe to be connected with the oil groove of guide sleeve near the floating seal place by oil circuit, and the other end of outer cylinder body has oil pipe to be connected with the oil cylinder back cavity.
When the present invention seals as oil cylinder piston, keep under the constant prerequisite of former oil cylinder piston seal, be separately installed with secondary piston ring and back piston ring at two of oil cylinder piston, oil cylinder piston part between secondary piston ring and piston seal is processed with oil groove, oil cylinder piston part between back piston ring and piston seal also is processed with oil groove, be processed with an inner cylinder body at piston rod near inside, oil cylinder back cavity end axle center, inner carrier is installed in the inner cylinder body, seal ring is housed on the inner carrier, inner carrier can be done moving back and forth of certain distance vertically in inner cylinder body, the two ends of inner cylinder body all have oil circuit to be connected with the oil groove at oil cylinder piston two ends respectively.
The auxiliary piston method for sealing that adopts a kind of oil cylinder that as above technological scheme provides compared with prior art, technique effect is:
1, oil cylinder makes oil cylinder piston when action by the moving of inner carrier and outer piston, and can reduce pressure reduction before and after each rubber seal, thereby has lowered the rate of wear of each rubber seal, the working life of further having improved oil cylinder.
2, floating seal and piston ring all are the hard sealings of adopting high-abrasive material to make, and long service life adds the raising in each rubber seal life-span, has saved the sealing cost like this, has excellent economy.
Description of drawings
Fig. 1: the structural representation for the auxiliary piston method for sealing of a kind of oil cylinder of the present invention during as the oil cylinder piston rod seal also is a Figure of abstract of the present invention.
Fig. 2: the structural representation when sealing as oil cylinder piston for the auxiliary piston method for sealing of a kind of oil cylinder of the present invention.
Embodiment
Embodiment 1:
Embodiment when below in conjunction with Fig. 1 the present invention being used as the oil cylinder piston rod seal is described in further detail.
Near oil cylinder ante-chamber 9 ends floating seal 8 is installed at oil cylinder guide sleeve 2, oil cylinder guide sleeve 2 is processed with oil groove 5 near floating seal 8 places, one outer cylinder body 10 is installed on cylinder tube 4 external cylindrical surfaces, outer piston 11 is installed in the outer cylinder body 10, seal ring 12 is housed on the outer piston 11, outer piston 11 can be done moving back and forth of certain distance vertically in outer cylinder body 10, one end of outer cylinder body 10 has oil pipe 7 to be connected with oil groove 5 by oil circuit 6, and the other end of outer cylinder body 10 has oil pipe 13 to be connected with oil cylinder back cavity 16.
During work, when oil cylinder ante-chamber 9 is a high voltage terminal, floating seal 8 stops that fluid enters into rod seal 3 places, but floating seal 8 usefulness do not have flexible hard material to be made, therefore floating seal 8 can not play the effect of sealing fully, in piston rod 1 working procedure, floating seal 8 oil spill liquid enter into an end of outer cylinder body 10 by oil circuit 6 and oil pipe 7 and order about outer piston 11 and move to an other end of outer cylinder body 10, and the fluid with an other end is discharged to oil cylinder back cavity 16 by oil pipe 13 simultaneously.Equally, when oil cylinder back cavity 16 was high voltage terminal, fluid promoted outer piston 11 and resets.In this process, when just piston rod 1 moved when outer piston 11 moves, rod seal 3 pressure differences were little more than conventional seals, so just improved the working life of rod seal 3, reach purpose of the present invention.
Embodiment 2:
Be described in further detail when the present invention being sealed as oil cylinder piston below in conjunction with Fig. 2.
Be separately installed with secondary piston ring 17 and back piston ring 21 at two of oil cylinder piston 15, oil cylinder piston 15 part between secondary piston ring 17 and piston seal 14 is processed with oil groove 18, oil cylinder piston 15 part between back piston ring 21 and piston seal 14 also is processed with oil groove 20, be processed with inner cylinder body 23 at piston rod 1 near inside, oil cylinder back cavity 16 end axle center, inner carrier 25 is installed in the inner cylinder body 23, seal ring 24 is housed on the inner carrier 25, inner carrier 25 can be done moving back and forth of certain distance vertically in inner cylinder body 23, the two ends of inner cylinder body 23 have oil circuit 19 and oil circuit 22 to be connected with the oil groove 18 and the oil groove 20 at oil cylinder piston 15 two ends respectively.
During work, when oil cylinder ante-chamber 9 is a high voltage terminal, secondary piston ring 17 stops that fluid enters into piston seal 14 places, but secondary piston ring 17 usefulness do not have flexible hard material to be made, therefore secondary piston ring 17 can not play the effect of sealing fully, in piston rod 1 working procedure, secondary piston ring 17 oil spill liquid enter into an end of inner cylinder body 23 by oil circuit 19 and order about inner carrier 25 and move to an other end of inner cylinder body 23, fluid with an other end is discharged to oil groove 20 by oil circuit 22 simultaneously, arrives oil cylinder back cavity 16 at last.Equally, when oil cylinder back cavity 16 was high voltage terminal, fluid promoted inner carrier 25 and resets.In this process, when just piston rod 1 moved when inner carrier 25 moves, piston seal 14 pressure differences were little more than conventional seals, so just improved the working life of piston seal 14, reach purpose of the present invention.
Claims (2)
1, a kind of auxiliary piston method for sealing of oil cylinder, it is characterized in that: near oil cylinder ante-chamber (9) end floating seal (8) is installed at oil cylinder guide sleeve (2), oil cylinder guide sleeve (2) locates to be processed with oil groove (5) near floating seal (8), on cylinder tube (4) external cylindrical surface, an outer cylinder body (10) is installed, outer piston (11) is installed in the outer cylinder body (10), seal ring (12) is housed on the outer piston (11), one end of outer cylinder body (10) has oil pipe (7) to be connected with oil groove (5) by oil circuit (6), and the other end of outer cylinder body (10) has oil pipe (13) to be connected with oil cylinder back cavity (16).
2, a kind of auxiliary piston method for sealing of oil cylinder, it is characterized in that: be separately installed with secondary piston ring (17) and back piston ring (21) at two of oil cylinder piston (15), oil cylinder piston (15) part between secondary piston ring (17) and piston seal (14) is processed with oil groove (18), oil cylinder piston (15) part between back piston ring (21) and piston seal (14) is processed with oil groove (20), be processed with inner cylinder body (23) at piston rod (1) near oil cylinder back cavity (16) end inside, axle center, inner carrier (25) is installed in the inner cylinder body (23), seal ring (24) is housed on the inner carrier (25), and the two ends of inner cylinder body (23) have oil circuit (19) and oil circuit (22) to be connected with the oil groove (18) and the oil groove (20) at oil cylinder piston (15) two ends respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100439681A CN101603598A (en) | 2009-07-20 | 2009-07-20 | A kind of auxiliary piston method for sealing of oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100439681A CN101603598A (en) | 2009-07-20 | 2009-07-20 | A kind of auxiliary piston method for sealing of oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101603598A true CN101603598A (en) | 2009-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100439681A Pending CN101603598A (en) | 2009-07-20 | 2009-07-20 | A kind of auxiliary piston method for sealing of oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101603598A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235339A (en) * | 2010-04-30 | 2011-11-09 | 奔迪士商业运输系统公司 | Piston and cylinder assembly |
| CN105507808A (en) * | 2016-01-11 | 2016-04-20 | 东方电气集团东方电机有限公司 | Underground drilling tool motor |
| CN105508618A (en) * | 2016-01-11 | 2016-04-20 | 东方电气集团东方电机有限公司 | Multilevel-redundancy main shaft seal system |
-
2009
- 2009-07-20 CN CNA2009100439681A patent/CN101603598A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235339A (en) * | 2010-04-30 | 2011-11-09 | 奔迪士商业运输系统公司 | Piston and cylinder assembly |
| CN102235339B (en) * | 2010-04-30 | 2015-12-16 | 奔迪士商业运输系统公司 | Piston and Cylinder Assembly |
| CN105507808A (en) * | 2016-01-11 | 2016-04-20 | 东方电气集团东方电机有限公司 | Underground drilling tool motor |
| CN105508618A (en) * | 2016-01-11 | 2016-04-20 | 东方电气集团东方电机有限公司 | Multilevel-redundancy main shaft seal system |
| CN105508618B (en) * | 2016-01-11 | 2017-10-13 | 东方电气集团东方电机有限公司 | A kind of spindle seal system of multilevel redundancy |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091216 |