CN201310505Y - Single-tube bidirectional self-locking loop of single-piston-rod oil cylinder - Google Patents
Single-tube bidirectional self-locking loop of single-piston-rod oil cylinder Download PDFInfo
- Publication number
- CN201310505Y CN201310505Y CNU2008201784779U CN200820178477U CN201310505Y CN 201310505 Y CN201310505 Y CN 201310505Y CN U2008201784779 U CNU2008201784779 U CN U2008201784779U CN 200820178477 U CN200820178477 U CN 200820178477U CN 201310505 Y CN201310505 Y CN 201310505Y
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- Prior art keywords
- oil
- manual
- oil pump
- oil cylinder
- way valve
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- 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 - Lifetime
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- 230000002457 bidirectional effect Effects 0.000 title claims description 7
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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Abstract
The utility model belongs to mechanical product relates to a two-way auto-lock return circuit of single piston rod hydro-cylinder single tube that is arranged in aircraft engine to maintain hydraulic system in the ground support equipment. The self-locking loop consists of a single-piston-rod oil cylinder, a differential pressure hydraulic lock, a manual one-way valve, an oil pump and a switch. The oil inlet of the differential pressure hydraulic lock is connected with the oil inlet of the manual one-way valve, and shares an oil pipe to be connected with the oil outlet of the oil pump, and a pipeline is connected beside the oil outlet of the oil pump to connect the switch in a hydraulic circuit. The utility model discloses only a pipeline between oil pump and locking valve makes fuel feeding and a pipeline of oil return sharing, has reduced back oil pipe way, enables the fluid in two chambeies and can realize complementing, reduced the fuel feeding volume of oil pump. The method is suitable for the design of a hydraulic system with the pipeline arrangement limited by space.
Description
Technical field
The utility model belongs to engineering goods, is a kind of single-piston rod oil cylinder single tube bidirectional self-locking loop that airplane engine is safeguarded the support equipment hydraulic system that is used for.
Background technique
The self-locking of hydraulic jack at present adopts hydraulic lock to realize more, hydraulic lock is two Pilot operated check valves and forms interlock circuit, present hydraulic lock volume is little, generally all is installed in the filler opening or the oil outlet of oil cylinder, therefore must draw from the other end of oil cylinder to connect a conduit and link to each other with hydraulic lock.Fuel tank is directly flowed back in the oil return in two chambeies in this oil circuit, and the oil of oil suction chamber all provides by hydraulic power when oil cylinder moves, and simultaneously is connected two pipelines between selector valve and hydraulic lock, and this oil circuit must have selector valve could realize the motion of oil cylinder.If faults such as fracture appear in this oil pipe, then whole self-locking circuit lost efficacy.
Summary of the invention
The purpose of this utility model provides a kind of being used in and has only a pipeline between selector valve and the lock valve, can realize the shared pipeline of fuel feeding oil return, can make two cavity oil realize complementary single-piston rod oil cylinder single tube bidirectional self-locking loop.
The purpose of this utility model is achieved by the following technical solution: a kind of single-piston rod oil cylinder single tube bidirectional self-locking loop comprises: single-piston rod oil cylinder, pressure reduction hydraulic lock, manual one-way valve, oil pump, switch.The manual one-way valve of pressure reduction hydraulic lock all has directivity, pressure reduction hydraulic lock oil outlet and cylinder rod chamber hydraulic fluid port join, manual one-way valve oil outlet and oil cylinder rodless cavity hydraulic fluid port join, the filler opening of pressure reduction hydraulic lock links to each other with the filler opening of manual one-way valve, and a shared oil pipe and oil pump oil outlet join, and otherly at the oil outlet place of oil pump connects a pipeline switch is connected in the oil hydraulic circuit.
The utility model advantage is compact structure.Between oil pump and lock valve, have only a pipeline, make the shared pipeline of fuel feeding and oil return, reduced return line, be that the fluid in two chambeies can be realized complementation simultaneously, reduced the fuel delivery of oil pump.Be applicable to line arrangement space-constrained design of Hydraulic System.Because locking element directly links to each other with oil cylinder, the decompression that the oil hydraulic cylinder that causes because of hydraulic line failure can not occur causes oil cylinder locking inefficacy.Through test and this hydraulic jack self-locking circuit reliability height of proof that uses in enormous quantities.
Description of drawings
Fig. 1 is prior art locking loop;
Fig. 2 is the utility model locking loop.
Embodiment:
Referring to Fig. 2, the utility model single-piston rod oil cylinder single tube bidirectional self-locking loop is to form with oil cylinder 1, pressure reduction hydraulic lock 6, manual one-way valve 7, oil pump 5, switch 8.The manual one-way valve of pressure reduction hydraulic lock all has directivity, pressure reduction hydraulic lock 6 oil outlets and oil cylinder 1 rod chamber hydraulic fluid port join, manual one-way valve 7 oil outlets and oil cylinder 1 rodless cavity hydraulic fluid port join, the filler opening of pressure reduction hydraulic lock 6 links to each other with the filler opening of manual one-way valve 7, and a shared oil pipe and oil pump 5 oil outlets join, and otherly at the oil outlet place of oil pump 5 connect a pipeline switch 8 is connected in the oil hydraulic circuit.When oil cylinder 1 stretched out the rodless cavity oil-feed, switch 8 cut out, manual one-way valve 7 forward oil-feeds, and the pressure reduction at pressure reduction hydraulic lock 6 two ends is opened it, and rod chamber oil is back to rodless cavity; When oil cylinder 1 was regained the rod chamber oil-feed, switch 8 was opened, and manual one-way valve 7 is opened under manpower control, and the pressure reduction at pressure reduction hydraulic lock 6 two ends is opened it, and rodless cavity fluid refluxes, and part fluid flows into rod chamber, and unnecessary fluid flows back to fuel tank.When oil pump 5 not voltage supply, manual one-way valve 7 and pressure reduction hydraulic lock 6 all are in closed condition, oil cylinder 1 self-locking at an arbitrary position.
Claims (1)
1, a kind of single-piston rod oil cylinder single tube bidirectional self-locking loop is by oil cylinder (1), pressure reduction hydraulic lock (6), manual one-way valve (7), oil pump (5), switch (8) is formed, the manual one-way valve of pressure reduction hydraulic lock (6) (7) all has directivity, pressure reduction hydraulic lock (6) oil outlet and oil cylinder (1) rod chamber hydraulic fluid port join, manual one-way valve (7) oil outlet and oil cylinder (1) rodless cavity hydraulic fluid port join, the filler opening of pressure reduction hydraulic lock (6) links to each other with the filler opening of manual one-way valve (7), and a shared oil pipe and oil pump (5) oil outlet join the other switch (8) that connects at the oil outlet place of oil pump (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201784779U CN201310505Y (en) | 2008-11-14 | 2008-11-14 | Single-tube bidirectional self-locking loop of single-piston-rod oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201784779U CN201310505Y (en) | 2008-11-14 | 2008-11-14 | Single-tube bidirectional self-locking loop of single-piston-rod oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310505Y true CN201310505Y (en) | 2009-09-16 |
Family
ID=41107759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201784779U Expired - Lifetime CN201310505Y (en) | 2008-11-14 | 2008-11-14 | Single-tube bidirectional self-locking loop of single-piston-rod oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310505Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097507A1 (en) * | 2011-12-27 | 2013-07-04 | 中联重科股份有限公司 | Oil line control apparatus and engineering machinery |
| CN105605002A (en) * | 2016-03-18 | 2016-05-25 | 中冶赛迪工程技术股份有限公司 | Decompression-preventing hydraulic control loop and method thereof |
| CN109305247A (en) * | 2017-07-26 | 2019-02-05 | 沈阳新松机器人自动化股份有限公司 | It parks AGV pitch-changing mechanism |
-
2008
- 2008-11-14 CN CNU2008201784779U patent/CN201310505Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097507A1 (en) * | 2011-12-27 | 2013-07-04 | 中联重科股份有限公司 | Oil line control apparatus and engineering machinery |
| CN105605002A (en) * | 2016-03-18 | 2016-05-25 | 中冶赛迪工程技术股份有限公司 | Decompression-preventing hydraulic control loop and method thereof |
| CN109305247A (en) * | 2017-07-26 | 2019-02-05 | 沈阳新松机器人自动化股份有限公司 | It parks AGV pitch-changing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090916 |
|
| CX01 | Expiry of patent term |