CN2419402Y - Return throttling style electric fluid activator - Google Patents
Return throttling style electric fluid activator Download PDFInfo
- Publication number
- CN2419402Y CN2419402Y CN 00201908 CN00201908U CN2419402Y CN 2419402 Y CN2419402 Y CN 2419402Y CN 00201908 CN00201908 CN 00201908 CN 00201908 U CN00201908 U CN 00201908U CN 2419402 Y CN2419402 Y CN 2419402Y
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- CN
- China
- Prior art keywords
- oil
- valve
- oil pump
- hydraulic
- electric hydraulic
- 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 - Lifetime
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides an improved electric hydraulic executer. The improved electric hydraulic executer is characterized in that oil return throttling valve is additionally arranged on the basis of an original electric hydraulic push rod; a hydraulic integrated block as well as an oil cylinder and a bidirectional oil pump are directly connected, so an original connection oil tubes among the hydraulic integrated block, the oil cylinder, and the bidirectional oil pump are omitted; a filtering net is arranged at an oil sucking mouth. Thus, the utility model has the advantages of safe operation, compact and reasonable structure, easy installation, convenient maintenance, small size, and low cost; the improved electric hydraulic executer can stably run in uniform motion under negative load; the bidirectional oil pump stably and safely runs, and has long life time.
Description
The utility model relates to a kind of improved electric hydaulic final controlling element, particularly a kind of meter out formula electro-hydraulic actuator.
Its application number that relating to prior art of the present utility model has the Dongfang Building Material Equipment Factory, Xishan City to apply in 97 years is 97235848.X, and it is called the patent application of Electrohydraulic push rod.This technology is compared and is had large improvement with traditional electronic, air-leg technology, its contrast advantage shows as compact structure, thrust is stable, safe and reliable, use, easy for installation etc., but in use it still has not enough place: (one) can produce the vibration of creeping when bearing negative load, and this kind phenomenon very easily has an accident and danger owing to fluctuation of service in operation; (2) there is more connection oil pipe its inside, makes small product size still excessive, and installation, maintenance is inconvenience also, and cost is too high; (3) its inner inlet port does not have filtrating equipment, and the impurity that carries in the recycle oil easily damages oil pump.
The purpose of this utility model mainly is to propose a kind of when bearing negative load, and final controlling element all can at the uniform velocity be stablized and advances; More compact structure is reasonable; The meter out formula electro-hydraulic actuator that cost is low.
Can realize the purpose of this utility model by following technical proposals, a kind of meter out formula electro-hydraulic actuator, it is by oil cylinder, fuel tank, hydraulic manifold block, two-way oil pump, cross coupler, oil tank base support, motor constitutes, it is characterized in that, remove in the hydraulic manifold block and be provided with oil sucting one-way valve, relief valve, one-way valve, outside the Pilot operated check valve, also be provided with the meter out valve, meter out valve one end connects the entrance point of Pilot operated check valve, the other end communicates with fuel tank, hydraulic manifold block one end and two-way oil pump are abutted against, the other end and oil cylinder are abutted against, and at two end faces that lean on mutually, oil circuit directly communicates.
Be the protection two-way oil pump, the place is provided with filter screen at inlet port.
Advantage of the present utility model is: 1, bearing under the negative load state, owing to be provided with the backflow throttle valve, final controlling element at the uniform velocity stablized advanced, making the steady safety of operation.2, directly be abutted against between hydraulic manifold block and oil pump and the oil cylinder, saved connection oil pipe therebetween, make that product is more succinct, installation, maintenance is convenient, volume is littler, and cost is low.3, be provided with filter screen at inlet port, elimination the impurity of recycle oil, make that two-way oil pump is stable, safety, life-span is long.
Below in conjunction with accompanying drawing the utility model is further set forth.
Accompanying drawing 1 is schematic representation of the present utility model (broken section).
Accompanying drawing 2 is the structural principle schematic representation of hydraulic manifold block in the utility model.
With reference to Fig. 1, fuel tank 1 right-hand member connects oil tank base support 2, and the output shaft of motor 3 connects with the input shaft of two-way oil pump 4 by cross coupler 5, and hydraulic manifold block 6 left ends connect with oil cylinder 7 by the oil cylinder flange, and its oil duct directly docks.The right-hand member of hydraulic manifold block 6 and two-way oil pump 4 left ends are abutted against, and its oil duct directly docks.The inlet port of hydraulic manifold block 6 is provided with filter screen 8.Be provided with piston 9, piston rod 10 in the oil cylinder 7 and be enclosed within the guide sleeve 11 of piston rod 10 left parts.Oil cylinder 7 left ends are by upper shield 12 fixing sealings.
With reference to accompanying drawing 2, the structure of the right oil circuit is that oil sucting one-way valve 13 imports communicate with fuel tank 1.Be provided with filter screen 8 at inlet port.The inlet parallel of the outlet of oil sucting one-way valve 13 and relief valve 14, one-way valve 15.The outlet of relief valve 14 communicates with fuel tank 1.The outlet of one-way valve 15 is in parallel with outlet, the oil cylinder 7 right chambeies of Pilot operated check valve 16.Return the import of liquid throttle valve 17 1 ends connection Pilot operated check valve 16, an end communicates with fuel tank.Two-way oil pump 4 two ends respectively with left and right oil circuit oil sucting one-way valve 13,13 ' outlet end connect.Left side oil circuit and the right oil circuit symmetry, no longer narration.Pilot operated check valve 16,16 ' is respectively controlled left and right sides oil circuit.Meter out valve 17,17 ' function be when final controlling element bears negative load, the flow velocity that stops withdrawing oil, Pilot operated check valve 16,16 ' outlet end be formed into a backflow oil pressure, this backflow oil pressure makes its execution function of Pilot operated check valve 16,16 ' uninterruptedly.Backflow throttle valve 17,17 ' be adjustable, regulate according to the situation of the negative load of bear.
Claims (2)
1, a kind of meter out formula electro-hydraulic actuator, it is made of oil cylinder, fuel tank, hydraulic manifold block, two-way oil pump, cross coupler, oil tank base support, motor, it is characterized in that, hydraulic manifold block is interior except that being provided with oil sucting one-way valve, relief valve, one-way valve, Pilot operated check valve, also be provided with the meter out valve, meter out valve one end connects the entrance point of Pilot operated check valve, and the other end communicates with fuel tank; Hydraulic manifold block one end and two-way oil pump are abutted against, and the other end and oil cylinder are abutted against, and at two end faces that lean on mutually, oil circuit directly communicates.
2, meter out formula electro-hydraulic actuator according to claim 1 is characterized in that the inlet port place is provided with filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00201908 CN2419402Y (en) | 2000-01-03 | 2000-01-03 | Return throttling style electric fluid activator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00201908 CN2419402Y (en) | 2000-01-03 | 2000-01-03 | Return throttling style electric fluid activator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2419402Y true CN2419402Y (en) | 2001-02-14 |
Family
ID=33571060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00201908 Expired - Lifetime CN2419402Y (en) | 2000-01-03 | 2000-01-03 | Return throttling style electric fluid activator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2419402Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359187C (en) * | 2005-01-12 | 2008-01-02 | 中国科学院金属研究所 | Simple and convenient hydraulic integrated block |
| CN102384124A (en) * | 2011-09-15 | 2012-03-21 | 上海当世流体动力控制设备有限公司 | Integral type minisize electrohydraulic actuator |
| CN104405225A (en) * | 2014-10-16 | 2015-03-11 | 乔明齐 | Automobile automatic door device micro type hydraulic actuator and control method thereof |
| CN109538549A (en) * | 2018-12-25 | 2019-03-29 | 浙江致腾电气成套设备有限公司 | A kind of intelligent well cover with miniature explosion-proof hydraulic power system |
-
2000
- 2000-01-03 CN CN 00201908 patent/CN2419402Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359187C (en) * | 2005-01-12 | 2008-01-02 | 中国科学院金属研究所 | Simple and convenient hydraulic integrated block |
| CN102384124A (en) * | 2011-09-15 | 2012-03-21 | 上海当世流体动力控制设备有限公司 | Integral type minisize electrohydraulic actuator |
| CN104405225A (en) * | 2014-10-16 | 2015-03-11 | 乔明齐 | Automobile automatic door device micro type hydraulic actuator and control method thereof |
| CN109538549A (en) * | 2018-12-25 | 2019-03-29 | 浙江致腾电气成套设备有限公司 | A kind of intelligent well cover with miniature explosion-proof hydraulic power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |