CN106704303A - Linear portable electric-hydraulic actuator - Google Patents
Linear portable electric-hydraulic actuator Download PDFInfo
- Publication number
- CN106704303A CN106704303A CN201710042573.4A CN201710042573A CN106704303A CN 106704303 A CN106704303 A CN 106704303A CN 201710042573 A CN201710042573 A CN 201710042573A CN 106704303 A CN106704303 A CN 106704303A
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- CN
- China
- Prior art keywords
- piston
- hydraulic cylinder
- rod
- electro
- linear
- 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.)
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
Abstract
The invention discloses a linear portable electric-hydraulic actuator. The linear portable electric-hydraulic actuator comprises a main shell, a two-way rotating electromagnetic pump, a valve set, and a single-piston rod hydraulic cylinder for serving as an actuation part; the two-way rotating electromagnetic pump is arranged at the tail part of the main shell, and an oil access port thereof is communicated with two oil inlets of the valve set; the single-piston rod hydraulic cylinder is arranged at the front end of the main shell; two oil outlets of the valve set are respectively connected with a hard pipe pipeline and a soft pipe pipeline; the hard pipe pipeline is communicated with a rodless cavity of the single-piston rod hydraulic cylinder; and the soft pipe pipeline is communicated with a rod cavity of the single-piston rod hydraulic cylinder. The electric-hydraulic actuation system is positioned in the cylindrical shell, is compact in structure, small in size, light in weight, high in power density, liable to integrate with other equipment products, portable and reliable, and in particular, provides new thoughts to application in the field of robots.
Description
Technical field
The present invention relates to a kind of actuator, more particularly, to a kind of electro-hydraulic actuator of linear lightweight.
Background technology
Electro-hydraulic actuator is the hot topic electromechanics liquid product of research both at home and abroad at present, and it is generally by motor, two-way quantitative pump, control
Valve processed, executive component and fuel tank composition, hydraulic power is produced by motor-driven two-way quantitative pump, pushes directly on executive component work
Make.It is good in fly-by-wire flight control system, vehicle transmission field application effect, but outside the driving of such as joint of robot and Wearable
The applications effect on driving birds is not good higher to structural compactness, flexibility, compliance requirement such as exoskeleton suit, this kind of electro-hydraulic actuator exists
There is following weak point in specific application process：
1) limited by the arrangement of electrohydraulic system oil sources and accumulator, system complex, taken up room big；
2) underaction is acted, it is difficult to suitable for high request occasion；
3) high energy consumption, all there are certain requirements to power supply offer amount and hydraulic oil demand；
4) potential leakage point is more, and maintaining is difficult.
The content of the invention
It is of the prior art electro-hydraulic to solve it is an object of the invention to provide a kind of linear electro-hydraulic actuator of lightweight
Actuator has that system complex, the big, high energy consumption that takes up room, maintaining are difficult.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of electro-hydraulic actuator of linear lightweight, it includes that main casing, bidirectional rotation electromagnetic pump, valve group and conduct are performed
The single-piston-rod hydraulic cylinder of part, wherein, the bidirectional rotation electromagnetic pump is arranged at main casing afterbody, and its oil inlet and outlet and institute
The two oil inlets connection of valve group is stated, the single-piston-rod hydraulic cylinder is arranged at the front end of the main casing, the scene 2 of the valve group
Hydraulic fluid port is connected to hard tube pipeline and hose line, and the hard tube pipeline is connected with the rodless cavity of single-piston-rod hydraulic cylinder, institute
Hose line is stated to be connected with the rod chamber of single-piston-rod hydraulic cylinder.
Especially, the alternation fixed magnetic field and the pump housing that the bidirectional rotation electromagnetic pump forms electromagnetism winding strike up partnership,
Its middle pump body is any one of gear pump, vane pump, ball pump or plunger displacement pump.
Especially, the valve group is different according to the operating mode of electro-hydraulic actuator, takes different control valve groups to close, for electro-hydraulic
The operating mode that actuator bidirectional-movement keeps, using hydraulic lock control loop；For the operating mode that electro-hydraulic actuator lifting action keeps,
Using force feed counterbalance valve control loop；For the operating mode that electro-hydraulic actuator pulling action keeps, controlled back using return oil pressure valve
Road；For the operating mode of electro-hydraulic actuator responsiveness control, throttling speed control circuit is taken.The valve group can also take other valves simultaneously
Body textural association.
Especially, when the piston rod of the single-piston-rod hydraulic cylinder stretches out, the hose line is described single living in flat shape is inhaled
When the piston rod of stopper rod hydraulic cylinder is retracted, the hose line swells.Single-piston rod is made up by the convergent-divergent of hose line
The oil mass difference of hydraulic cylinder rod chamber and rodless cavity, hose line plays a part of accumulator repairing pressurize, while the flexible pipe can
Substituted with accumulator.
Especially, it is provided with positioning cover plate between the bidirectional rotation electromagnetic pump and main casing.
Especially, end caps, the other end are provided between the tailpiece of the piston rod and main casing of the single-piston-rod hydraulic cylinder
Pressed by installed in the holding screw of main casing barrel.
Especially, the hose line is set around outside the cylinder body of the single-piston-rod hydraulic cylinder in the shape of a spiral.
Compared to existing technology, beneficial effects of the present invention are：
1) system simplifies, and is convenient to mount and dismount, and maintainability is good；
2) masterly in face of various working, the application especially for robot field provides solution；
3) space occupancy volume is small, and compact conformation is lightweight, and energy consumption is low；
4) strong and reliable integral structure, eliminates potential leakage point, and maintenance requirement is greatly reduced.
Brief description of the drawings
Fig. 1 is the structural representation of the electro-hydraulic actuator of linear lightweight that the specific embodiment of the invention 1 is provided；
Fig. 2 is the external form figure of the electro-hydraulic actuator of linear lightweight that the specific embodiment of the invention 1 is provided；
Fig. 3 is the hydraulic pressure lock control of the valve group of the electro-hydraulic actuator of linear lightweight that the specific embodiment of the invention 1 is provided
Loop processed；
Fig. 4 is the throttle grverning of the valve group of the electro-hydraulic actuator of linear lightweight that the specific embodiment of the invention 1 is provided
Loop；
Fig. 5 is the force feed back pressure of the valve group of the electro-hydraulic actuator of linear lightweight that the specific embodiment of the invention 1 is provided
Valve control loop；
Fig. 6 is the return oil pressure of the valve group of the electro-hydraulic actuator of linear lightweight that the specific embodiment of the invention 1 is provided
Valve control loop.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
Refer to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of linear electro-hydraulic actuator of lightweight, it includes main casing
1st, bidirectional rotation electromagnetic pump 2, valve group 3 and the single-piston-rod hydraulic cylinder 4 as execution unit, wherein, the bidirectional rotation electromagnetism
Pump 2 is arranged at the afterbody of main casing 1, is positioned by positioning cover plate 5 between the two, the oil inlet and outlet of the bidirectional rotation electromagnetic pump 2
Connected with two oil inlets of the valve group 3, the single-piston-rod hydraulic cylinder 4 is arranged at the front end of main casing 1, the single-piston rod
End caps 6 are provided between the tailpiece of the piston rod and main casing 1 of hydraulic cylinder 4, the other end is by the tightening installed in the barrel of main casing 1
Screw 7 presses, and 3 liang of oil-outs of the valve group are connected to hard tube pipeline 8 and hose line 9, and the hard tube pipeline 8 is living with single
The rodless cavity connection of stopper rod hydraulic cylinder 4, the hose line 9 is connected with the rod chamber of single-piston-rod hydraulic cylinder 4, and the flexible pipe
Pipeline 9 is set around outside the cylinder body of the single-piston-rod hydraulic cylinder 4 in the shape of a spiral.
When bidirectional rotation electromagnetic pump 2 is rotated forward, pressure oil flows through the side runner of valve group 3 one, hard tube pipeline 8 to single-piston rod
The rodless cavity of hydraulic cylinder 4, promotes the piston rod of single-piston-rod hydraulic cylinder 4 to stretch out, while the rod chamber fluid of single-piston-rod hydraulic cylinder 4 is returned
Stream, hose line 9 is gradually in the flat shape of suction.When bidirectional rotation electromagnetic pump 2 is reversely rotated, fluid commutation, it is another that pressure oil flows through valve group 3
One side runner, hose line 9 promote the piston rod of single-piston-rod hydraulic cylinder 4 to retract to the rod chamber of single-piston-rod hydraulic cylinder 4, while
The rodless cavity fluid of single-piston-rod hydraulic cylinder 4 flows back, and as fluid constantly flows back, hose line 9 slightly swells.
Refer to shown in Fig. 3 to Fig. 6, the valve group 3 is different according to the operating mode of electro-hydraulic actuator, takes different control valves
Combination.For the operating mode that electro-hydraulic actuator bidirectional-movement keeps, using the hydraulic lock control loop shown in Fig. 3；For electro-hydraulic work
The operating mode of dynamic device responsiveness control, using the throttling speed control circuit shown in Fig. 4；Kept for electro-hydraulic actuator lifting action
Operating mode, using the force feed counterbalance valve control loop shown in Fig. 5；For the operating mode that electro-hydraulic actuator pulling action keeps, using Fig. 6
Shown return oil pressure valve control loop.
Above example is to elaborate general principle of the invention and characteristic, and the present invention is not limited by above-mentioned example,
Without departing from the spirit and scope, the present invention also has various change and change, and these changes and modifications both fall within
In scope of the claimed invention.The claimed scope of the invention is by appending claims and its equivalent thereof.
Claims (7)
1. a kind of electro-hydraulic actuator of linear lightweight, it includes main casing, bidirectional rotation electromagnetic pump, valve group and as enforcement division
The single-piston-rod hydraulic cylinder of part, it is characterised in that the bidirectional rotation electromagnetic pump is arranged at main casing afterbody, and its oil inlet and outlet
Connected with two oil inlets of the valve group, the single-piston-rod hydraulic cylinder is arranged at the front end of the main casing, the valve group
Two oil-outs are connected to hard tube pipeline and hose line, and the hard tube pipeline connects with the rodless cavity of single-piston-rod hydraulic cylinder
Logical, the hose line is connected with the rod chamber of single-piston-rod hydraulic cylinder.
2. the electro-hydraulic actuator of linear lightweight according to claim 1, it is characterised in that the bidirectional rotation electromagnetic pump
The alternation fixed magnetic field and the pump housing that electromagnetism winding is formed strike up partnership, and its middle pump body is gear pump, vane pump, ball pump or post
Fill in any one of pump.
3. the electro-hydraulic actuator of linear lightweight according to claim 1, it is characterised in that the valve group is adopted according to operating mode
With hydraulic lock control loop, throttling speed control circuit, force feed counterbalance valve control loop, return oil pressure valve control loop any one or
Several combinations.
4. the electro-hydraulic actuator of linear lightweight according to claim 1, it is characterised in that the single-piston-rod hydraulic cylinder
Piston rod when stretching out, the hose line in inhaling flat shape, when the piston rod of the single-piston-rod hydraulic cylinder is retracted, the flexible pipe
Pipeline swells.
5. the electro-hydraulic actuator of linear lightweight according to claim 1, it is characterised in that the bidirectional rotation electromagnetic pump
Positioning cover plate is provided between main casing.
6. the electro-hydraulic actuator of linear lightweight according to claim 1, it is characterised in that the single-piston-rod hydraulic cylinder
Tailpiece of the piston rod and main casing between be provided with end caps, the other end is pressed by installed in the holding screw of main casing barrel.
7. the electro-hydraulic actuator of linear lightweight according to claim 1, it is characterised in that the hose line is helically
Shape is set around outside the cylinder body of the single-piston-rod hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042573.4A CN106704303B (en) | 2017-01-20 | 2017-01-20 | A kind of electro-hydraulic actuator of linear lightweight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042573.4A CN106704303B (en) | 2017-01-20 | 2017-01-20 | A kind of electro-hydraulic actuator of linear lightweight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704303A true CN106704303A (en) | 2017-05-24 |
| CN106704303B CN106704303B (en) | 2019-01-25 |
Family
ID=58908919
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710042573.4A Active CN106704303B (en) | 2017-01-20 | 2017-01-20 | A kind of electro-hydraulic actuator of linear lightweight |
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| Country | Link |
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| CN (1) | CN106704303B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5975967A (en) * | 1997-02-04 | 1999-11-02 | Showa Corporation | Tilt device for marine propulsion device and method for assembling the tilt device |
| CN2577023Y (en) * | 2002-11-03 | 2003-10-01 | 张洪庆 | Electrohydraulic actuator |
| 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 |
| CN202971412U (en) * | 2012-12-17 | 2013-06-05 | 上海当世流体动力控制设备有限公司 | Integrated miniature electro-hydraulic actuator |
| CN206468618U (en) * | 2017-01-20 | 2017-09-05 | 华中科技大学无锡研究院 | A kind of electro-hydraulic actuator of linear lightweight |
-
2017
- 2017-01-20 CN CN201710042573.4A patent/CN106704303B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5975967A (en) * | 1997-02-04 | 1999-11-02 | Showa Corporation | Tilt device for marine propulsion device and method for assembling the tilt device |
| CN2577023Y (en) * | 2002-11-03 | 2003-10-01 | 张洪庆 | Electrohydraulic actuator |
| 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 |
| CN202971412U (en) * | 2012-12-17 | 2013-06-05 | 上海当世流体动力控制设备有限公司 | Integrated miniature electro-hydraulic actuator |
| CN206468618U (en) * | 2017-01-20 | 2017-09-05 | 华中科技大学无锡研究院 | A kind of electro-hydraulic actuator of linear lightweight |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106704303B (en) | 2019-01-25 |
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