CN107747568A - A kind of electro-hydraulic actuator system of leveling - Google Patents
A kind of electro-hydraulic actuator system of leveling Download PDFInfo
- Publication number
- CN107747568A CN107747568A CN201710859057.0A CN201710859057A CN107747568A CN 107747568 A CN107747568 A CN 107747568A CN 201710859057 A CN201710859057 A CN 201710859057A CN 107747568 A CN107747568 A CN 107747568A
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- Prior art keywords
- valve
- leveling
- electro
- fuel tank
- actuator system
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of leveling with electro-hydraulic actuator system, including fuel tank assembly, integrated package, connection component, driving and electric machine assembly and hydraulic pressure cylinder assembly, the fuel tank assembly, integrated package, driving and electric machine assembly are mounted on the connection component, and the hydraulic pressure cylinder assembly is connected with the integrated package by flexible pipe；The upper end of the hydraulic pressure cylinder assembly is fixedly connected with the lower end of the car body.Leveling of the present invention can effectively solve the problem that the problem of centralized fuel feeding is present with electro-hydraulic actuator system and can realize energy-conservation, with good control characteristic and energy conservation characteristic, its reliability can also be improved on missile truck by applying, and be had great importance to Launch Vehicle Leveling system；Meanwhile leveling of the present invention is integrated all component with electro-hydraulic actuator system, the miniaturization of integrated system can be effectively realized.
Description
Technical field
The present invention relates to leveling electro-hydraulic Actuator technique field, more particularly to a kind of electro-hydraulic actuator system of leveling.
Background technology
All there is leveling system in the large erecting equipments such as missile truck, traditional leveling system uses centralized fuel feeding：
Fluid is delivered to by each leveling supporting legs by centerline fuel tank and pipeline, not only system design is complicated for such system, and stringing is numerous
It is trivial, it is also easy to the various problems such as pipeline leakage occur, once a certain section of pipeline or joint go wrong, car launcher etc. can not be just
Often work.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of electro-hydraulic actuator system of leveling, to solve existing tune
The problem of flat system design is complicated, stringing is cumbersome, pipeline is easily revealed, while solve existing design and can not realize that miniaturization is integrated
The problem of, present system is applied on missile truck, moreover it is possible to improve the reliability of missile truck.
It is limited to problems existing for the centralized fuel feeding scheme of tradition, the present invention proposes the skill using distributed leveling supporting legs
Art scheme, simultaneously as the advantages of big control accuracy of hydraulic system power density is high, the invention discloses a kind of for leveling
Electro-hydraulic actuator system；A kind of electro-hydraulic actuator system of leveling of the invention, is mainly used in Launch Vehicle Leveling system,
Actuator system of the present invention uses profile scheme, can save centralized oil sources and complicated cumbersome pipeline, meanwhile, the present invention
Electro-hydraulic actuator system inherits the advantages of big control accuracy of hydraulic system power density is high, in addition, the electro-hydraulic work of the present invention
Dynamic device system also has the advantages that energy saving is high；, again can be independent meanwhile the present invention can both act to four supporting leg leveling simultaneously
Action, in order to tackle different work condition environments.
The purpose of the present invention is mainly achieved through the following technical solutions：
A kind of leveling electro-hydraulic actuator system, including fuel tank assembly, integrated package, connection component, driving and group of motors
Part and hydraulic pressure cylinder assembly, the fuel tank assembly, integrated package, driving and electric machine assembly are mounted on the connection component, institute
Hydraulic pressure cylinder assembly is stated to be connected by flexible pipe with the integrated package；The upper end of the hydraulic pressure cylinder assembly and the lower end of the car body are consolidated
Fixed connection.
The present invention is integrated above-mentioned each component, effectively reduces volume of the leveling with electro-hydraulic actuator；Simultaneously will be upper
State that each component is integrated to be can effectively solve the problem that the problem of centralized fuel feeding is present and can realize energy-conservation, with good control characteristic with
Energy conservation characteristic, its reliability can also be improved on missile truck by applying.
Further, the connection component is attached with car body, and is provided separately with hydraulic pressure cylinder assembly；Or the company
Connected components are installed on the hydraulic pressure cylinder assembly..
Present hydraulic cylinder component is attached by flexible pipe and integrated package, can be whole leveling system flexible arrangement
It is convenient.
Further, each component is 4 sets, and the surrounding for being respectively arranged at car body constitutes distributed four groups of tune
Flat supporting leg, by cable connection between four groups of leveling supporting legs, realize leveling control.
Further, the fuel tank assembly includes two-way quantitative pump, fuel tank, air cleaner, liquid level liquid thermometer and filter screen,
The air cleaner, liquid level liquid thermometer and filter screen are mounted on the fuel tank, and the two-way quantitative pump passes through the fuel tank
It is connected with the driving and electric machine assembly.
Further, the integrated package includes valve block, Solenoid ball valve, overflow valve, check valve, differential valve and liquid controlled reversing
Valve, the Solenoid ball valve, overflow valve, check valve, differential valve and pilot operated directional control valve are installed on the valve block.
Further, the hydraulic pressure cylinder assembly includes hydraulic cylinder, and the hydraulic cylinder is connected with the Solenoid ball valve.
Further, the driving and electric machine assembly include servo-driver and servomotor, the servo-driver control
The servomotor is made, the servomotor is connected with the two-way quantitative pump.
Further, the servomotor is connected with the valve block.
Further, the Solenoid ball valve includes the first Solenoid ball valve and the second Solenoid ball valve, and the overflow valve includes the
One overflow valve and the second overflow valve, two-way quantitative pump infiltration in the fuel tank, the servomotor with it is described two-way fixed
Amount pump is connected；One end of the two-way quantitative pump is connected by first Solenoid ball valve with the hydraulic cylinder, described two-way fixed
The other end of amount pump passes sequentially through the second solenoid valve, valve for pressure difference is connected with hydraulic cylinder；First Solenoid ball valve also passes through
First overflow valve is joined directly together with the fuel tank, and first Solenoid ball valve also passes sequentially through first overflow valve, list
It is connected to valve, pilot operated directional control valve with the fuel tank；The second solenoid valve also passes through second solenoid valve and the direct phase of the fuel tank
Even, the second solenoid valve also passes sequentially through the second solenoid valve, check valve, pilot operated directional control valve and is connected with the fuel tank, institute
Second solenoid valve is stated also to be joined directly together with the pilot operated directional control valve.
Further, the pilot operated directional control valve is divided into left position and right position, when the hydraulic cylinder is descending, the pilot operated directional control valve
It is operated in left position；When the hydraulic cylinder is up, the pilot operated directional control valve is operated in right position.
Beneficial effects of the present invention are：
1) the electro-hydraulic actuator system of a kind of leveling of the invention, the problem of centralized fuel feeding is present and energy be can effectively solve the problem that
Energy-conservation is realized, there is good control characteristic and energy conservation characteristic, its reliability can also be improved on missile truck by applying, right
Launch Vehicle Leveling system has great importance；
2) leveling of the present invention is integrated all component with electro-hydraulic actuator system, can effectively realize integrated system
The miniaturization of system.
In the present invention, it can also be mutually combined between above-mentioned each technical scheme, to realize more preferred compositions schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or is understood by implementing the present invention.The purpose of the present invention and other advantages can by write specification, right
Specifically noted structure is realized and obtained in claim and accompanying drawing.
Brief description of the drawings
Accompanying drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, identical reference symbol represents identical part.
Fig. 1 is a kind of schematic diagram of the electro-hydraulic actuator system of leveling；
Fig. 2 is a kind of arrangement schematic diagram of the electro-hydraulic actuator system of leveling.
In figure, 1- fuel tanks, 2- servomotors, 3- two-way quantitative pumps, 4- pilot operated directional control valves, 5- check valves, the overflows of 6- first
Valve, the overflow valves of 7- second, the Solenoid ball valves of 8- first, the Solenoid ball valves of 9- second, 10- differential valves, 11- hydraulic cylinders, 12- fuel tank groups
Part, 13- integrated packages, 14- connection components, 15- drivings and electric machine assembly, 16- vehicle frames, 17- hydraulic pressure cylinder assemblies.
Embodiment
The preferred embodiments of the present invention are specifically described below in conjunction with the accompanying drawings, wherein, accompanying drawing forms the application part, and
It is used for the principle for explaining the present invention together with embodiments of the present invention, is not intended to limit the scope of the present invention.
The specific embodiment of the present invention, discloses a kind of electro-hydraulic actuator system of leveling, also refers to a kind of leveling
With EHA systems, as shown in figure 1, including fuel tank 1, servomotor 2, two-way quantitative pump 3, pilot operated directional control valve 4, check valve 5, first
Overflow valve 6, the second overflow valve 7, the first Solenoid ball valve 8, the second Solenoid ball valve 9, differential valve 10 and hydraulic cylinder 11；
Wherein, two-way quantitative pump 3 is infiltrated in fuel tank 1, and servomotor 2 is connected with two-way quantitative pump 3, and control it is two-way fixed
Measure pump 3；One end of two-way quantitative pump 3 is connected by the first Solenoid ball valve 8 with hydraulic cylinder 11, the other end of two-way quantitative pump 3 according to
It is secondary to be connected by second solenoid valve 9, valve for pressure difference 10 with hydraulic cylinder 11；First Solenoid ball valve 8 also passes through the first overflow valve 6 and fuel tank
1 is joined directly together, meanwhile, the first Solenoid ball valve 8 also passes sequentially through the first overflow valve 6, check valve 5, pilot operated directional control valve 4 and fuel tank 1
It is connected；Second solenoid valve 9 is also joined directly together by second solenoid valve 7 and fuel tank 1, while second solenoid valve 9 also passes sequentially through
Two magnetic valves 7, check valve 5, pilot operated directional control valve 4 are connected with fuel tank 1, and second solenoid valve 9 is also joined directly together with pilot operated directional control valve 4.
The effect of two-way quantitative pump 3 is that the two-way function of leveling supporting legs can be realized by the steering of controlling pump, realizes branch
The stretching and retraction of leg.
The effect of pilot operated directional control valve 4 has two, first, play a part of repairing, when hydraulic cylinder 11 is descending, liquid controlled reversing
Valve 4 is operated in left position, and when low pressure oil way vacuum occurs because of fluid deficiency, fuel tank 1 is to low-pressure system repairing；When hydraulic cylinder 11
When up, pilot operated directional control valve 4 is operated in right position, and now the more oil return fluid of system flows back to fuel tank；Second, play displacement deep fat
Effect.
The effect of check valve 5 is the hydraulic oil and fuel tank 1 of the outlet of isolation two-way quantitative pump 3 when hydraulic cylinder 11 is descending
UNICOM, oil return is completely cut off when up and is contacted with the direct of fuel tank 1.
First overflow valve 6 and the second overflow valve 7 are all to play a part of safety valve, wherein when the first overflow valve 6 is descending
Safety valve, safety valve when the second overflow valve 7 is up.
The effect of first Solenoid ball valve 8 and the second Solenoid ball valve 9 makes supporting leg realize reliable stopping at an arbitrary position, realizes
Effective self-locking, due to its No leakage, it is possible to achieve supporting leg keeps certain position for a long time.
Differential valve 10 is balanced valve, and it plays balanced loaded effect, supporting leg can be made not fall.
When a kind of leveling of the present invention is worked with electro-hydraulic actuator system, its operation principle is：First Solenoid ball valve 8 and second
After Solenoid ball valve 9 is opened, servomotor 2 drives two-way quantitative pump 3 to realize the flexible of hydraulic cylinder 11；When hydraulic cylinder 11 is descending, liquid
Control reversal valve 4 is operated in left position, and when low pressure oil way vacuum occurs because of fluid deficiency, fuel tank 1 is to low-pressure system repairing；Hydraulic pressure
When cylinder 11 is up, pilot operated directional control valve 4 is operated in right position, and now the more oil return fluid of system flows back to fuel tank 1；Here enclosed is used
The mode for repairing that fuel tank is unpowered, it ensures the pressure of fuel tank 1 by an air cleaner with precompressed；First Solenoid ball valve
8 and second Solenoid ball valve 9 closed after leveling terminates, hydraulic cylinder 11 is locked；Back pressure is in the second electromagnetism caused by differential valve 10
Ball valve 9 can prevent that hydraulic cylinder 11 is descending because of deadweight after opening, and motion is gentle when hydraulic cylinder 11 can be made descending.
Another specific embodiment of the present invention, leveling is integrated with electro-hydraulic actuator system, is then fitted into car
On body, as shown in Fig. 2 including fuel tank assembly 12, integrated package 13, connection component 14, driving and electric machine assembly 15, fuel tank assembly
12nd, connection component 14 and driving and electric machine assembly 15 are installed on integrated package 13 by screw thread；
Fuel tank assembly 12 includes：Two-way quantitative pump, fuel tank, air cleaner, liquid level liquid thermometer and filter screen, air-filtering
Device, liquid level liquid thermometer and filter screen are mounted on fuel tank, and two-way quantitative pump is connected through fuel tank with servomotor.
Integrated package 13 includes：Valve block, all valves, various terminal and screw plug, the effect of valve block are with electro-hydraulic by leveling
All valves are linked together by various terminal in actuator system, and screw plug is to block up unwanted hole in valve block, institute
Some valves refer to pilot operated directional control valve 4, check valve 5, the first overflow valve 6, the second overflow valve 7, the first Solenoid ball valve 8, the second electromagnetism
Ball valve 9 and differential valve 10.
Connection component 14 includes：Leveling can be that to separate can also connect with hydraulic cylinder in itself with electro-hydraulic actuator system
It is connected together, is a kind of separation connection as shown in Figure 2, therefore the connection component 14 in the present embodiment is exactly connection valve block and car body
Attachment structure, the present embodiment be by being threadably mounted on car body, but the present invention be not limited only to screw thread installation, can also select
Installed using other modes, as long as meeting the integrated of each component.
Driving and electric machine assembly 15 include：Servo-driver, servomotor；Wherein servo-driver and servomotor integrates
To that together, can reduce volume to greatest extent, motor passes through valve block (motor is connected through a screw thread with valve block) and two-way quantitative
Pump 3 is connected, and two-way quantitative pump 3 is immersed in fuel tank (wherein two-way quantitative pump 3 is connected through a screw thread with valve block), and fuel tank passes through bolt
It is connected with valve block, except the other elements of fuel tank annex are integrated on valve block, fuel tank annex refers to air cleaner, liquid level
Temperature meter and filter screen；The exquisiteness that can realize all elements by compact design integrates.
It is noted that in integrated morphology shown in Fig. 2, hydraulic pressure cylinder assembly 17 is passed through with leveling with electro-hydraulic actuator system
Separate type is connected, and hydraulic pressure cylinder assembly 17 is connected on car body by flange, and leveling is installed with electro-hydraulic actuator system by screw thread
On car body, hydraulic cylinder is connected with leveling with electro-hydraulic actuator system by flexible pipe, and such arrangement can make whole leveling system
Flexible arrangement of uniting is convenient；Hydraulic pressure cylinder assembly and leveling can certainly be designed as one with electro-hydraulic actuator system by designing
Body, such leveling with electro-hydraulic actuator system by being threadably mounted on hydraulic cylinder, final hydraulic cylinder by flange or other
Connected mode is installed on car body.
It is noted that the present invention is integrated leveling with electro-hydraulic actuator system, it is integrated with the institute of electromechanical hydraulic control
There is component, only by cable connection Upper system, the changes in flow rate of electro-hydraulic actuator system turned by servomotor
Speed change realizes that the present invention provides fluid needed for electro-hydraulic actuator system by sealed reservoir, and two-way quantitative pump infiltrates
It can play a part of lubricating in fuel tank and cool；Leveling can pass through mechanical structure with electro-hydraulic actuator system and hydraulic cylinder
It is joined directly together with compacter, can also be connected by flexible pipe and be easy to arrange.Due to leveling with electro-hydraulic actuator system mostly should
With on plane hydraulic system, its executive component is double acting asymmetric cylinder, and leveling is asymmetrical cylinder with hydraulic cylinder, so it is mended
Oil is more difficult than on aircraft, and the present invention uses the air cleaner of prepressing type, and oil can be kept on the basis of without using slippage pump
Case has certain pressure, realizes unpowered repairing；Other aircraft does not need balancing gravity to bear with leveling with electro-hydraulic actuator system
Carry, therefore do not need differential valve, loaded greatly additionally, due to missile truck, easily leakage makes leveling deterioration in accuracy to supporting leg, makes here
Self-locking can be effectively realized with Solenoid ball valve.
The leveling system of existing missile truck (by taking four supporting legs as an example) is four supporting legs by centerline fuel tank fuel feeding
The system for moving last leveling again simultaneously, because pipeline is complicated and the presence of pipeline makes missile truck easily because pipeline occurs
Failure and influence to launch, so leveling system without pipeization design just have realistic meaning.The present invention plans leveling and makes independence
Module, this is omitted from the variety of problems that complex pipeline is brought, and only need to realize leveling control by cable can, and the present invention adjusts
It is flat highly integrated with electro-hydraulic actuator system, electromechanical hydraulic control system is closely connected, space is saved and is easily installed, be advantageous to lead to
, can be widely used in different products with the implementation of change, seriation modularization and standardization.
In summary, the invention provides a kind of leveling with electro-hydraulic actuator system, can effectively solve the problem that centralized fuel feeding
The problem of existing simultaneously can realize energy-conservation, have good control characteristic and energy conservation characteristic, and applying on missile truck can be with
Its reliability is improved, is had great importance to Launch Vehicle Leveling system；Meanwhile the electro-hydraulic actuator system of leveling of the present invention
System can integrate, and realize integrated miniaturization.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.
Claims (10)
1. the electro-hydraulic actuator system of a kind of leveling, it is characterised in that including fuel tank assembly, integrated package, connection component, driving
And electric machine assembly and hydraulic pressure cylinder assembly, the fuel tank assembly, integrated package, driving and electric machine assembly are mounted on the connection group
On part, the hydraulic pressure cylinder assembly is connected with the integrated package by flexible pipe；The upper end of the hydraulic pressure cylinder assembly and the car body
Lower end be fixedly connected.
2. the electro-hydraulic actuator system of a kind of leveling according to claim 1, it is characterised in that the connection component and car
Body is attached, and is provided separately with hydraulic pressure cylinder assembly；Or the connection component is installed on the hydraulic pressure cylinder assembly.
3. the electro-hydraulic actuator system of a kind of leveling according to claim 1, it is characterised in that each component is
4 sets, the surrounding for being respectively arranged at car body constitutes distributed four groups of leveling supporting legs, passes through electricity between four groups of leveling supporting legs
Cable connects, and realizes leveling control.
4. the electro-hydraulic actuator system of a kind of leveling according to claim 1, it is characterised in that the fuel tank assembly includes
Two-way quantitative pump, fuel tank, air cleaner, liquid level liquid thermometer and filter screen, the air cleaner, liquid level liquid thermometer and filter screen are equal
It is installed on the fuel tank, the two-way quantitative pump is connected through the fuel tank with the driving and electric machine assembly.
5. the electro-hydraulic actuator system of a kind of leveling according to claim 4, it is characterised in that the integrated package includes
Valve block, Solenoid ball valve, overflow valve, check valve, differential valve and pilot operated directional control valve, the Solenoid ball valve, overflow valve, check valve are poor
Pressure valve and pilot operated directional control valve are installed on the valve block.
A kind of 6. electro-hydraulic actuator system of leveling according to claim 5, it is characterised in that the hydraulic pressure cylinder assembly bag
Hydraulic cylinder is included, the hydraulic cylinder is connected with the Solenoid ball valve.
7. the electro-hydraulic actuator system of a kind of leveling according to claim 6, it is characterised in that the driving and group of motors
Part includes servo-driver and servomotor, and the servo-driver controls the servomotor, the servomotor with it is described
Two-way quantitative pump is connected.
8. the electro-hydraulic actuator system of a kind of leveling according to claim 7, it is characterised in that the servomotor and institute
Valve block is stated to be connected.
9. the electro-hydraulic actuator system of a kind of leveling according to claim 6, it is characterised in that the Solenoid ball valve includes
First Solenoid ball valve and the second Solenoid ball valve, the overflow valve include the first overflow valve and the second overflow valve, the two-way quantitative
Pump is infiltrated in the fuel tank, and the servomotor is connected with the two-way quantitative pump；One end of the two-way quantitative pump passes through
First Solenoid ball valve is connected with the hydraulic cylinder, and the other end of the two-way quantitative pump passes sequentially through second electromagnetism
Valve, valve for pressure difference are connected with hydraulic cylinder；First Solenoid ball valve is also joined directly together by first overflow valve with the fuel tank,
First Solenoid ball valve also passes sequentially through first overflow valve, check valve, pilot operated directional control valve and is connected with the fuel tank；It is described
Second solenoid valve is also joined directly together by second solenoid valve and the fuel tank, and the second solenoid valve also passes sequentially through described second
Magnetic valve, check valve, pilot operated directional control valve are connected with the fuel tank, the second solenoid valve also with the direct phase of the pilot operated directional control valve
Even.
A kind of 10. electro-hydraulic actuator system of leveling according to claim 9, it is characterised in that the pilot operated directional control valve
It is divided into left position and right position, when the hydraulic cylinder is descending, the pilot operated directional control valve is operated in left position；When the hydraulic cylinder is up, institute
State pilot operated directional control valve and be operated in right position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859057.0A CN107747568B (en) | 2017-09-21 | 2017-09-21 | Electro-hydraulic actuator system for leveling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859057.0A CN107747568B (en) | 2017-09-21 | 2017-09-21 | Electro-hydraulic actuator system for leveling |
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| Publication Number | Publication Date |
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| CN107747568A true CN107747568A (en) | 2018-03-02 |
| CN107747568B CN107747568B (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710859057.0A Active CN107747568B (en) | 2017-09-21 | 2017-09-21 | Electro-hydraulic actuator system for leveling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488114A (en) * | 2018-05-04 | 2018-09-04 | 贵阳海之力液压有限公司 | A kind of pump control hydraulic transmission system applied to exoskeleton robot |
| CN114704525A (en) * | 2022-04-18 | 2022-07-05 | 太重集团榆次液压工业(济南)有限公司 | Direct-drive volume control electro-hydraulic servo device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04302702A (en) * | 1991-03-29 | 1992-10-26 | Amada Co Ltd | Control method and device for hydraulic cylinder and plate finishing machine |
| US20080152513A1 (en) * | 2006-12-20 | 2008-06-26 | Hans Esders | Hydraulic circuit arrangement with recovery of energy |
| CN104179739A (en) * | 2014-08-13 | 2014-12-03 | 徐州重型机械有限公司 | Dual-pump bidirectional confluence control system and fire truck adopting same |
| CN204403026U (en) * | 2014-12-25 | 2015-06-17 | 柳工无锡路面机械有限公司 | A kind of road-surface milling machine scraper floating hydraulic system |
| CN104847710A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Electro-hydraulic hybrid actuator based on oil-gas balance |
| CN105366604A (en) * | 2015-11-05 | 2016-03-02 | 湖北省专用汽车研究院 | Working bucket leveling mechanism of hydraulic aerial cage |
| CN106402060A (en) * | 2016-10-17 | 2017-02-15 | 哈尔滨工业大学 | Direct drive type volume control electrohydraulic servo hydraulic system for hydraulic press |
-
2017
- 2017-09-21 CN CN201710859057.0A patent/CN107747568B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04302702A (en) * | 1991-03-29 | 1992-10-26 | Amada Co Ltd | Control method and device for hydraulic cylinder and plate finishing machine |
| US20080152513A1 (en) * | 2006-12-20 | 2008-06-26 | Hans Esders | Hydraulic circuit arrangement with recovery of energy |
| CN104179739A (en) * | 2014-08-13 | 2014-12-03 | 徐州重型机械有限公司 | Dual-pump bidirectional confluence control system and fire truck adopting same |
| CN204403026U (en) * | 2014-12-25 | 2015-06-17 | 柳工无锡路面机械有限公司 | A kind of road-surface milling machine scraper floating hydraulic system |
| CN104847710A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Electro-hydraulic hybrid actuator based on oil-gas balance |
| CN105366604A (en) * | 2015-11-05 | 2016-03-02 | 湖北省专用汽车研究院 | Working bucket leveling mechanism of hydraulic aerial cage |
| CN106402060A (en) * | 2016-10-17 | 2017-02-15 | 哈尔滨工业大学 | Direct drive type volume control electrohydraulic servo hydraulic system for hydraulic press |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488114A (en) * | 2018-05-04 | 2018-09-04 | 贵阳海之力液压有限公司 | A kind of pump control hydraulic transmission system applied to exoskeleton robot |
| CN114704525A (en) * | 2022-04-18 | 2022-07-05 | 太重集团榆次液压工业(济南)有限公司 | Direct-drive volume control electro-hydraulic servo device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107747568B (en) | 2020-07-10 |
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