CN105605038B - A kind of suitable load energy regenerating electricity hydrostatic actuating system - Google Patents
A kind of suitable load energy regenerating electricity hydrostatic actuating system Download PDFInfo
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- CN105605038B CN105605038B CN201610141422.XA CN201610141422A CN105605038B CN 105605038 B CN105605038 B CN 105605038B CN 201610141422 A CN201610141422 A CN 201610141422A CN 105605038 B CN105605038 B CN 105605038B
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- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
Abstract
The application is related to a kind of suitable load energy regenerating electricity hydrostatic actuating system, including：Hydraulic pump, symmetrical hydraulic cylinder and energy recovery mechanism；Wherein：Symmetrical hydraulic cylinder includes housing and symmetrical piston, and housing is divided into mutual disconnected first chamber and second chamber by symmetrical piston；Energy recovery mechanism includes first input end, the second input, the first output end and the second output end, and hydraulic pump includes oil-out and oil inlet；Oil-out connects with first input end, and the first output end connects with first chamber, and second chamber connects with the second input, and the second output end connects with oil inlet；Energy recovery mechanism is used for when along carrying energy regenerating electricity hydrostatic actuating system and being in along working condition is carried, and receives and stores first chamber or the fluid of second chamber output.The scheme of the application can receive when along load working condition and store load discharges this portion of energy with driving load to energy caused by actuator acting, and non-along when carrying working condition.
Description
Technical field
The application is related to electric hydrostatic actuating system field, particularly a kind of along load energy regenerating electricity hydrostatic actuating system.
Background technology
Electric hydrostatic actuating system (Electro static hydraulic actuator, EHA) refers to drive by controlling
The rotating speed of the motor of hydraulic pump and direction and then change closed hydraulic loop flow and pressure, the servo system of driving hydraulic cylinder motion
System.EHA is the important development direction of current aviation actuator, available for the electro-hydraulic servo actuator for substituting concentration hydraulic power source.Mesh
It is preceding to be applied in the world on multiple advanced aircraft models.
In the course of the work, the problem of heating is serious, radiating is difficult be present, and then cause EHA to cause in the EHA of prior art
Temperature rise is fast, temperature is high.To find out its cause, one is because radiated caused by closed hydraulic loop difficult；In addition, electric drive device
Heating be also an important thermal source.
In the coordinate system that speed and power are formed, during EHA start, load, which can be considered, to be distributed in four quadrants：
First, three quadrant EHA externally do work, and two, the outer bound pair EHA actings of four-quadrant.Under the operating mode of two, four-quadrant, EHA hydraulic pump work
To make in hydraulic motor operating mode, motor is operated in generator operating mode, and aircraft power network does not allow electric energy to feed back to onboard networks at present,
This portion of energy must be converted into heat by resistance, be further exacerbated by EHA temperature regime.
The content of the invention
The brief overview on the application is given below, so as to provide on the application it is some in terms of basic reason
Solution.It should be appreciated that this general introduction is not the exhaustive general introduction on the application.It is not intended to determine the key of the application
Or pith, nor intended limitation scope of the present application.Its purpose only provides some concepts in simplified form, with
This is as the preamble in greater detail discussed later.
The main purpose of the application is to provide a kind of suitable load energy regenerating electricity hydrostatic actuating system, it is intended to solves such as
Upper described technical problem.
In a first aspect, this application provides a kind of along load energy regenerating electricity hydrostatic actuating system, including：It is hydraulic pump, symmetrical
Hydraulic cylinder and the first energy recovery mechanism；Wherein：Symmetrical hydraulic cylinder includes housing and symmetrical piston, and housing is divided into by symmetrical piston
Mutual disconnected first chamber and second chamber；First energy recovery mechanism includes first input end, the second input, first defeated
Go out end and the second output end, hydraulic pump includes oil-out and oil inlet；Oil-out connects with first input end, the first output end with
First chamber connects, and second chamber connects with the second input, and the second output end connects with oil inlet；First energy recovery mechanism
For when along carrying energy regenerating electricity hydrostatic actuating system and being in along working condition is carried, receiving and storing first chamber or the second chamber
The fluid of room output.
Using the suitable load energy regenerating electricity hydrostatic actuating system of the application, when it is in along working condition is carried, the first energy
Amount recovering mechanism can receive and store load discharges this to energy caused by actuator acting, and non-along when carrying working condition
Portion of energy improves the operating efficiency of actuator with driving load, reduces the energy of actuator reverse power generation, so as to reduce
The caloric value of braking resistor, the temperature of electric hydrostatic actuating system is advantageously reduced, expand electric hydrostatic actuating system uses model
Enclose.
Brief description of the drawings
With reference to the explanation of the embodiment of the present application, can be more readily understood that below in conjunction with the accompanying drawings the application more than and its
Its objects, features and advantages.Part in accompanying drawing is intended merely to show the principle of the application.In the accompanying drawings, identical or similar
Technical characteristic or part will be represented using same or similar reference.
Fig. 1 is the schematic block diagram of the suitable embodiment of load energy regenerating electricity hydrostatic actuating system one of the application；
Fig. 2 is the schematic diagram of another embodiment of suitable load energy regenerating electricity hydrostatic actuating system of the application；
When Fig. 3 is that the suitable load energy regenerating electricity hydrostatic actuating system shown in Fig. 2 is operated in the first working condition, fluid flowing
The schematic diagram in direction；
When Fig. 4 is that the suitable load energy regenerating electricity hydrostatic actuating system shown in Fig. 2 is operated in the second working condition, fluid flowing
The schematic diagram in direction；
When Fig. 5 is that the suitable load energy regenerating electricity hydrostatic actuating system shown in Fig. 2 is operated in three working conditions, fluid flowing
The schematic diagram in direction；
When Fig. 6 is that the suitable load energy regenerating electricity hydrostatic actuating system shown in Fig. 2 is operated in four working conditions, fluid flowing
The schematic diagram in direction.
Embodiment
Illustrate embodiments herein with reference to the accompanying drawings.Retouched in the accompanying drawing of the application or a kind of embodiment
The element and feature that the element and feature stated can be shown in one or more other accompanying drawings or embodiment are combined.Should
Work as attention, for purposes of clarity, eliminated in accompanying drawing and explanation known to, those of ordinary skill in the art unrelated with the application
Part and processing expression and description.
It is shown in Figure 1, it is the schematic structure of the suitable embodiment of load energy regenerating electricity hydrostatic actuating system one of the application
Block diagram.
The suitable load energy regenerating electricity hydrostatic actuating system of the present embodiment includes hydraulic pump 110, symmetrical hydraulic cylinder 120 and first
Energy recovery mechanism 130.
Symmetrical hydraulic cylinder 120 includes housing and symmetrical piston 121, and housing is divided into mutually disconnected the by symmetrical piston 121
One chamber 122 and second chamber 123.
First energy recovery mechanism 130 may include first input end, the second input, the first output end and the second output
End, hydraulic pump 110 include oil-out and oil inlet.
The oil-out of hydraulic pump 110 connects with the first input end of the first energy recovery mechanism 130, the first energy-recovering machine
First output end of structure 130 connects with first chamber 122, the input of 123 and first energy recovery mechanism of second chamber 130 second
Connection, the output end of the first energy recovery mechanism 130 second connect with the oil inlet of hydraulic pump 110.
First energy recovery mechanism 130 is used to carry working condition in suitable along load energy regenerating electricity hydrostatic actuating system
When, receive and store first chamber 122 or second chamber 123 export fluid.
In other words, it is (i.e. suitable to carry energy regenerating when being done work with the load that symmetrical piston 121 is connected to symmetrical hydraulic cylinder 120
Electric hydrostatic actuating system is in along load working condition) when, it can enter positioned at the fluid of first chamber 122 or second chamber 123
Enter in the first energy recovery mechanism 130, and stored by the first energy recovery mechanism 130, improve the operating efficiency of actuator, subtract
Lack the energy of actuator reverse power generation, so as to reduce the caloric value of braking resistor, advantageously reduce electric hydrostatic actuator
Temperature, expand the use range of electric hydrostatic actuator.
Furthermore, it is necessary to illustrate, in each embodiment of the application, the oil-out and oil inlet of hydraulic pump are not used to illustrate
The function of the two is only fuel-displaced or oil-feed, but be directed at description application scheme when, the two is made a distinction.In fact,
The oil-out of hydraulic pump in each embodiment of the application can be used for excavationg pump inner fluid, can also make the fluid in the external world through fuel-displaced
Mouth enters inside hydraulic pump.Similarly, the oil inlet of hydraulic pump may be used to the external world fluid enter hydraulic pump through oil inlet
Inside, it can be used for pump inner fluid being expelled to outside.
It is shown in Figure 2, it is the schematic knot of another embodiment of suitable load energy regenerating electricity hydrostatic actuating system of the application
Composition.
Similar with the embodiment shown in Fig. 1, the suitable load energy regenerating electricity hydrostatic actuating system of embodiment illustrated in fig. 2 equally wraps
Include hydraulic pump 210, the energy recovery mechanism 230 of symmetrical hydraulic cylinder 220 and first.
Unlike the embodiment shown in Fig. 1, the present embodiment further describes this and made along energy regenerating electricity hydrostatic is carried
The concrete structure of each part in dynamic system.
Specifically, the first energy recovery mechanism 230 in the present embodiment includes sensor (not shown), controller
(not shown), the second energy recovery mechanism and the first accumulator 231.Wherein, sensor is used to gather suffered by symmetrical piston
The velocity attitude of the Impact direction of power and symmetrical piston.Controller is used to determine along load energy based on Impact direction and velocity attitude
The working condition of electric hydrostatic actuating system is reclaimed, when along energy regenerating electricity hydrostatic actuating system is carried in along working condition is carried,
Control the first energy recovery mechanism 230 to receive the fluid that first chamber 222 or second chamber 223 export, and fluid is stored into
In first accumulator 231.
In addition, controller is additionally operable to when along energy regenerating electricity hydrostatic actuating system is carried in the non-working condition along load, control
Make the first energy recovery mechanism 230 and receive the fluid stored and the oil that will be stored in the first accumulator 231 in the first accumulator 231
Liquid is exported to first chamber 222 or second chamber 223.Alternatively, the first accumulator 231 can be high pressure accumulator, for example, the
Can have high-pressure gasbag or similar techniques in one accumulator 231 so that into the first accumulator 231 fluid have it is higher
Oil pressure, so as to realize the potential energy of fluid store.
In some optional implementations, the second energy recovery mechanism may include the first magnetic valve 232 and the second electromagnetism
Valve 233.
First magnetic valve 232 and second solenoid valve 233 can be two-position four-way solenoid valve.
First magnetic valve 232 may include the first control terminal CT1, the first hydraulic fluid port A1, the second hydraulic fluid port B1, the 3rd hydraulic fluid port C1 and
Four hydraulic fluid port D1.
First control terminal CT1 is used for the control signal for receiving controller output, and controls the first hydraulic fluid port based on control signal
Connected relation between A1, the second hydraulic fluid port B1, the 3rd hydraulic fluid port C1 and the 4th hydraulic fluid port D1.Wherein, the first hydraulic fluid port A1 and the first energy
The first input end connection of recovering mechanism 230, the second hydraulic fluid port B1 connect with the first output end of the first energy recovery mechanism 230.
Because the first input end of the first energy recovery mechanism 230 connects with the oil-out of hydraulic pump 210, thus the first electricity
Oil-outs of the first hydraulic fluid port A1 of magnet valve 232 also with hydraulic pump 210 connects.
Similarly, second solenoid valve 233 includes the second control terminal CT2, the 5th hydraulic fluid port A2, the 6th hydraulic fluid port B2, the 7th hydraulic fluid port
C2 and the 8th hydraulic fluid port D2.Second control terminal CT2 is used for the control signal for receiving controller output, and based on control signal control the
Connected relation between five hydraulic fluid port A2, the 6th hydraulic fluid port B2, the 7th hydraulic fluid port C2 and the 8th hydraulic fluid port D2.5th hydraulic fluid port A2 and the first energy
The second output end connection of recovering mechanism 230, the 6th hydraulic fluid port B2 connect with the second input of the first energy recovery mechanism 230.
In addition, symmetrical piston 221 includes cock body 2211, the first post portion 2212 and the second post portion 2213.
Wherein, housing is divided into mutual disconnected first chamber 222 and second chamber 223 by cock body 2211.
First post portion 2212 and the second post portion 2213 are symmetrical on cock body 2211, and the first post portion 2212 and the second post portion
2213 one end is connected with cock body.
The other end in the second post portion 2213 connects with load, for based between first chamber 222 and second chamber 223
Hydraulic pressure difference promotes load movement.
Alternatively, the suitable load energy regenerating electricity hydrostatic actuating system of the present embodiment can also include servomotor 240, first
Check valve 250, the second check valve 260 and the second accumulator 270.
Wherein, servomotor 240 is connected with hydraulic pump 210, for driving hydraulic pump 210 to turn clockwise or revolving counterclockwise
Turn.First check valve 250 is connected between the second accumulator 270 and the oil-out of hydraulic pump 210, for making the second accumulator
Fluid in 270 pumps out hydraulic fluid port stream when the oil-out pressure of hydraulic pump 210 is less than the second 270 pressure of accumulator to hydraulic pressure 210
Dynamic supplement fluid, avoids cavitating.
Second check valve 260 is connected between the second accumulator 270 and the oil inlet of hydraulic pump 210, for making the second storage
Fluid in energy device 270 to the inlet pressure of hydraulic pump 210 when being less than the pressure of the second accumulator 270 to hydraulic pump oil-feed
Mouth flowing, avoids cavitating.
Hydraulic pump 210 also includes drain tap, and the second accumulator 270 is connected with drain tap, for receiving drain tap discharge
Fluid.
Second accumulator 270 also with the 3rd hydraulic fluid port C1 of the first magnetic valve 232 and the 7th hydraulic fluid port of second solenoid valve 233
C2 connections, for making the fluid in the second accumulator 270 flow into first chamber or second through the first magnetic valve or second solenoid valve
Chamber, or, for receiving the fluid of first chamber or second chamber discharge.
Below, by by taking the suitable load energy regenerating electricity hydrostatic actuating system shown in Fig. 2 as an example, further illustrate that the application's is suitable
Carry the recycling and reuse how energy regenerating electricity hydrostatic actuating system carries out energy using the first energy recovery mechanism 230.
As shown in figure 3, it is operated in for the suitable load energy regenerating electricity hydrostatic actuating system of the application along carrying the of working condition
During one working condition, the schematic diagram of fluid flow direction.
In the first operative state, the Impact direction of symmetrical piston institute stress is along symmetrical piston and points to second chamber
223 direction (the F direction of arrow in such as Fig. 3), the velocity attitude of symmetrical piston are along symmetrical piston and point to first chamber 222
Direction (the v direction of arrow in such as Fig. 3).
In the first operative state, controller to the second control terminal CT2 output control signals of second solenoid valve 233 so that
5th hydraulic fluid port A2 connects with the 8th hydraulic fluid port D2, and the 6th hydraulic fluid port B2 connects with the 7th hydraulic fluid port C2.Meanwhile controller is also to the first electromagnetism
First control terminal CT1 output control signals of valve 232 are so that the first hydraulic fluid port A1 connects with the second hydraulic fluid port B1, the 3rd hydraulic fluid port C1 and
Four hydraulic fluid port D1 disconnect.
In other words, in the first operative state, the load being connected with the second post portion 2213 promotes the symmetrical of hydraulic cylinder 220
Piston so that fluid is discharged from the first chamber 222 of hydraulic cylinder 220, by the second hydraulic fluid port B1 of the first magnetic valve 232 and first
Hydraulic fluid port A1, discharged into the mouth of going on a tour of hydraulic pump 210, and from the oil inlet of hydraulic pump 210, then the through second solenoid valve 233
Five hydraulic fluid port A2 and the 8th hydraulic fluid port D2, into the first accumulator 231, realize the recovery of energy.In addition, in another loop, fluid
Discharged from the second accumulator 270, the 7th hydraulic fluid port C2 and the 6th hydraulic fluid port B2 by second solenoid valve 233 enter symmetrical hydraulic cylinder
220 second chamber 223.
As shown in figure 4, it is operated in for the suitable load energy regenerating electricity hydrostatic actuating system of the application along carrying the of working condition
During two working conditions, the schematic diagram of fluid flow direction.
In a second operative state, the Impact direction of symmetrical piston institute stress is along symmetrical piston and points to first chamber
222 direction (the F direction of arrow in such as Fig. 4), the velocity attitude of symmetrical piston are along symmetrical piston and point to second chamber 223
Direction (the v direction of arrow in such as Fig. 4).
In a second operative state, controller to the second control terminal CT2 output control signals of second solenoid valve 233 so that
5th hydraulic fluid port A2 connects with the 6th hydraulic fluid port B2, and the 7th hydraulic fluid port C2 and the 8th hydraulic fluid port D2 disconnect.Meanwhile controller is also to the first electromagnetism
First control terminal CT1 output control signals of valve 232 are so that the first hydraulic fluid port A1 connects with the 4th hydraulic fluid port D1, the second hydraulic fluid port B1 and
Three hydraulic fluid port C1 are connected.
In other words, in a second operative state, the load being connected with the second post portion 2213 promotes the symmetrical of hydraulic cylinder 220
Piston so that fluid is discharged from the second chamber 223 of hydraulic cylinder 220, the 6th hydraulic fluid port B2 and the 5th by second solenoid valve 233
Hydraulic fluid port A2, into the oil inlet of hydraulic pump 210.Fluid and servomotor 240 into the oil inlet of hydraulic pump 210 drive liquid jointly
Press pump 210 rotates so that the oil-out of hydraulic pump 210 discharge high-voltage oil liquid, the first hydraulic fluid port A1 through the first magnetic valve 232 and the
Four hydraulic fluid port D1, into the first accumulator 231, realize energy stores.In addition, in an other loop, fluid is from the second accumulation of energy
Device 270 is discharged, and enters the first chamber of symmetrical hydraulic cylinder 220 by the 3rd hydraulic fluid port C1 and the second hydraulic fluid port B1 of the first magnetic valve 232
Room 222.
As shown in figure 5, it is operated in the of non-load working condition for the suitable load energy regenerating electricity hydrostatic actuating system of the application
During three working conditions, the schematic diagram of fluid flow direction.
Under the 3rd working condition, the Impact direction of symmetrical piston institute stress is along symmetrical piston and points to second chamber
223 direction (the F direction of arrow in such as Fig. 5), the velocity attitude of symmetrical piston are along symmetrical piston and point to second chamber 223
Direction (the v direction of arrow in such as Fig. 4).
Under the 3rd working condition, controller to the second control terminal CT2 output control signals of second solenoid valve 233 so that
5th hydraulic fluid port A2 connects with the 8th hydraulic fluid port D2, and the 6th hydraulic fluid port B2 connects with the 7th hydraulic fluid port C2.Meanwhile controller is also to the first electromagnetism
First control terminal CT1 output control signals of valve 232 are so that the first hydraulic fluid port A1 connects with the second hydraulic fluid port B1, the 3rd hydraulic fluid port C1 and
Four hydraulic fluid port D1 disconnect.
In other words, under the 3rd working condition, symmetrical hydraulic cylinder 220 overcomes extraneous load externally acting, controller control
Second solenoid valve 223 processed works, and makes the 5th hydraulic fluid port A2 and the 8th hydraulic fluid port D2 connections of second solenoid valve, the 6th hydraulic fluid port B2 and the 7th
Hydraulic fluid port C2 connections.Then fluid now will flow according to the direction shown in Fig. 5, and load force promotes symmetrical hydraulic cylinder 220 so that oil
Liquid is from the second chamber 223 of symmetrical hydraulic cylinder 220, the 6th hydraulic fluid port B2 and the 7th hydraulic fluid port C2 by second solenoid valve 233, enters
Second accumulator 270.Meanwhile the first fluid discharge in accumulator 231, the 8th hydraulic fluid port D2 by second solenoid valve 233 and
5th hydraulic fluid port A2 enter hydraulic pump 210 oil inlet, drive hydraulic pump 210 to rotate jointly with servomotor 240 so that fluid from
The oil-out discharge fluid of hydraulic pump 210, enters symmetrical liquid by the first hydraulic fluid port A1 and the second hydraulic fluid port B1 of the first magnetic valve 232
The first chamber 222 of cylinder pressure 220, so as to drive symmetrical hydraulic cylinder 220 to move, realize the utilization of energy in the first accumulator 231.
As shown in fig. 6, it is operated in the of non-load working condition for the suitable load energy regenerating electricity hydrostatic actuating system of the application
During four working conditions, the schematic diagram of fluid flow direction.
Under the 4th working condition, the Impact direction of symmetrical 220 stress of piston is along symmetrical piston and points to the first chamber
The direction (the F direction of arrow in such as Fig. 6) of room 222, the velocity attitude of symmetrical piston 220 are along symmetrical piston and point to the first chamber
The direction (the v direction of arrow in such as Fig. 4) of room 222.
Under the 4th working condition, controller to the second control terminal CT2 output control signals of second solenoid valve 233 so that
5th hydraulic fluid port A2 connects with the 6th hydraulic fluid port B2, and the 7th hydraulic fluid port C2 and the 8th hydraulic fluid port D2 disconnect.Meanwhile controller is to the first magnetic valve
232 the first control terminal CT1 output control signals are so that the first hydraulic fluid port A1 connects with the 4th hydraulic fluid port D1, the second hydraulic fluid port B1 and the 3rd
Hydraulic fluid port C1 is connected.
In other words, under the 4th working condition, symmetrical hydraulic cylinder gram 220 takes extraneous load force and promotes symmetrical hydraulic cylinder
220 externally actings, now, controller controls the first magnetic valve 232 to work, and makes the first hydraulic fluid port A1 and the of the first magnetic valve 232
Four hydraulic fluid port D1 connections, the second hydraulic fluid port B1 and the 3rd hydraulic fluid port C1 connections, then fluid now will according to shown in Fig. 6 direction flow,
Load force promotes symmetrical hydraulic cylinder 220, is discharged from the first chamber 222 of hydraulic cylinder 220, the second oil through the first magnetic valve 232
Mouth B1 mouths and the 3rd hydraulic fluid port C1, into the second accumulator 270.Meanwhile the first fluid discharge in accumulator 231, by first
The 4th hydraulic fluid port D1 and the first hydraulic fluid port A1 of magnetic valve 232 enter the oil-out of hydraulic pump 210, are driven jointly with servomotor 240
Hydraulic pump 210 rotates, the oil inlet discharge high-voltage oil liquid of hydraulic pump 210, through the 5th hydraulic fluid port A2 of second solenoid valve 233 and the 6th
Hydraulic fluid port B2 enters the second chamber 223 of symmetrical hydraulic cylinder 220, and driving symmetrical hydraulic cylinder 220 moves, and realizes the second accumulator
The utilization of energy in 231.
It can be seen from the above that using the suitable load energy regenerating electricity hydrostatic actuating system of the application, when it is in
During along carrying working condition, the first energy recovery mechanism can receive and store load to energy caused by actuator acting, and
It is non-to discharge this portion of energy along when carrying working condition with driving load, the operating efficiency of actuator is improved, reduces actuator
The energy of reverse power generation, so as to reduce the caloric value of braking resistor, the temperature of electric hydrostatic actuator is advantageously reduced, expands electricity
The use range of hydrostatic actuator.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from the inventive concept, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (10)
- It is 1. a kind of along load energy regenerating electricity hydrostatic actuating system, it is characterised in that including hydraulic pump, symmetrical hydraulic cylinder and the first energy Measure recovering mechanism；Wherein：The symmetrical hydraulic cylinder includes housing and symmetrical piston, and the housing is divided into mutual disconnected first by the symmetrical piston Chamber and second chamber；First energy recovery mechanism includes first input end, the second input, the first output end and the second output end, described Hydraulic pump includes oil-out and oil inlet；The oil-out connects with the first input end, and first output end connects with the first chamber, and described second Chamber connects with second input, and second output end connects with the oil inlet；First energy recovery mechanism is used to carry working condition in suitable along load energy regenerating electricity hydrostatic actuating system described When, receive and store the first chamber or the second chamber output fluid；First energy recovery mechanism includes sensor, controller, the second energy recovery mechanism and the first accumulator；Second energy recovery mechanism includes the first magnetic valve；First magnetic valve includes the first control terminal, the first hydraulic fluid port, the second hydraulic fluid port, the 3rd hydraulic fluid port and the 4th hydraulic fluid port, and described One control terminal is used for the control signal for receiving controller output, and based on the control signal control first hydraulic fluid port, Connected relation between second hydraulic fluid port, the 3rd hydraulic fluid port and the 4th hydraulic fluid port, wherein, first hydraulic fluid port connects with the first input end Logical, second hydraulic fluid port connects with first output end.
- It is 2. according to claim 1 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that；The sensor is used for the velocity attitude for the Impact direction and symmetrical piston for gathering the symmetrical piston institute stress；The controller is used to determine that the suitable energy regenerating electricity hydrostatic that carries is made based on the Impact direction and the velocity attitude The working condition of dynamic system, when the suitable load energy regenerating electricity hydrostatic actuating system is in along working condition is carried, described in control Second energy recovery mechanism receives the fluid of the first chamber or second chamber output, and the fluid is stored into institute State in the first accumulator.
- It is 3. according to claim 2 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that：The controller is additionally operable to, when the suitable load energy regenerating electricity hydrostatic actuating system is in the non-working condition along load, control Second energy recovery mechanism receives the fluid that is stored in first accumulator and will stored in first accumulator Fluid is exported to the first chamber or the second chamber.
- It is 4. according to claim 3 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that：Second energy recovery mechanism includes second solenoid valve；First magnetic valve and the second solenoid valve are two-position four-way solenoid valve；The second solenoid valve includes the second control terminal, the 5th hydraulic fluid port, the 6th hydraulic fluid port, the 7th hydraulic fluid port and the 8th hydraulic fluid port, and described Two control terminals are used for the control signal for receiving controller output, and based on the control signal control the 5th hydraulic fluid port, Connected relation between 6th hydraulic fluid port, the 7th hydraulic fluid port and the 8th hydraulic fluid port, wherein, the 5th hydraulic fluid port connects with second output end Logical, the 6th hydraulic fluid port connects with second input.
- It is 5. according to claim 4 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that：The symmetrical piston includes cock body, the first post portion and the second post portion；Wherein, the housing is divided into mutual disconnected first chamber and second chamber by the cock body；The first post portion and the second post portion are symmetrical on the cock body, and the first post portion and the second post portion One end is connected with the cock body；The other end in the second post portion connects with load, for based on the liquid between the first chamber and the second chamber Pressure difference promotes the load movement.
- It is 6. according to claim 5 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that：It is described to include the first working condition along load working condition；Under first working condition, the Impact direction of the symmetrical piston institute stress is along the symmetrically piston and points to institute The direction of second chamber is stated, the velocity attitude of the symmetrical piston is along the symmetrical piston and points to the side of the first chamber To；The controller is further used for being in first working condition along load energy regenerating electricity hydrostatic actuating system described When, to the second control terminal output control signal of the second solenoid valve so that the 5th hydraulic fluid port connects with the 8th hydraulic fluid port Logical, the 6th hydraulic fluid port connects with the 7th hydraulic fluid port；The controller is additionally operable to when the suitable load energy regenerating electricity hydrostatic actuating system is in first working condition, to First control terminal output control signal of first magnetic valve is described so that first hydraulic fluid port connects with second hydraulic fluid port 3rd hydraulic fluid port disconnects with the 4th hydraulic fluid port.
- It is 7. according to claim 5 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that：It is described to include the second working condition along load working condition；Under second working condition, the Impact direction of the symmetrical piston institute stress is along the symmetrically piston and points to institute The direction of first chamber is stated, the velocity attitude of the symmetrical piston is along the symmetrical piston and points to the side of the second chamber To；The controller is further used for being in second working condition along load energy regenerating electricity hydrostatic actuating system described When, to the second control terminal output control signal of the second solenoid valve so that the 5th hydraulic fluid port connects with the 6th hydraulic fluid port Logical, the 7th hydraulic fluid port disconnects with the 8th hydraulic fluid port；The controller is additionally operable to when the suitable load energy regenerating electricity hydrostatic actuating system is in second working condition, to First control terminal output control signal of first magnetic valve is described so that first hydraulic fluid port connects with the 4th hydraulic fluid port Second hydraulic fluid port connects with the 3rd hydraulic fluid port.
- It is 8. according to claim 5 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that：The non-suitable working condition that carries includes the 3rd working condition；Under the 3rd working condition, the Impact direction of the symmetrical piston institute stress is along the symmetrically piston and points to institute The direction of second chamber is stated, the velocity attitude of the symmetrical piston is along the symmetrical piston and points to the side of the second chamber To；The controller is further used for being in the 3rd working condition along load energy regenerating electricity hydrostatic actuating system described When, to the second control terminal output control signal of the second solenoid valve so that the 5th hydraulic fluid port connects with the 8th hydraulic fluid port Logical, the 6th hydraulic fluid port connects with the 7th hydraulic fluid port；The controller is additionally operable to when the suitable load energy regenerating electricity hydrostatic actuating system is in three working condition, to First control terminal output control signal of first magnetic valve is described so that first hydraulic fluid port connects with second hydraulic fluid port 3rd hydraulic fluid port disconnects with the 4th hydraulic fluid port.
- It is 9. according to claim 5 along load energy regenerating electricity hydrostatic actuating system, it is characterised in that：The non-suitable working condition that carries includes the 4th working condition；Under the 4th working condition, the Impact direction of the symmetrical piston institute stress is along the symmetrically piston and points to institute The direction of first chamber is stated, the velocity attitude of the symmetrical piston is along the symmetrical piston and points to the side of the first chamber To；The controller is further used for being in the 4th working condition along load energy regenerating electricity hydrostatic actuating system described When, to the second control terminal output control signal of the second solenoid valve so that the 5th hydraulic fluid port connects with the 6th hydraulic fluid port Logical, the 7th hydraulic fluid port disconnects with the 8th hydraulic fluid port；The controller is additionally operable to when the suitable load energy regenerating electricity hydrostatic actuating system is in four working condition, to First control terminal output control signal of first magnetic valve is described so that first hydraulic fluid port connects with the 4th hydraulic fluid port Second hydraulic fluid port connects with the 3rd hydraulic fluid port.
- 10. the suitable load energy regenerating electricity hydrostatic actuating system according to claim 5-9 any one, it is characterised in that also Including servomotor, the first check valve, the second check valve and the second accumulator；Wherein：The servomotor is connected with the hydraulic pump, for driving the hydraulic pump to turn clockwise or rotate counterclockwise；First check valve is connected between second accumulator and the oil-out of the hydraulic pump, for making described second Fluid in accumulator flows to the oil-out of the hydraulic pump；Second check valve is connected between second accumulator and the oil inlet of the hydraulic pump, for making described second Fluid in accumulator flows to the oil inlet of the hydraulic pump；The hydraulic pump also includes drain tap, and second accumulator is connected with the drain tap, for receiving the drain tap The fluid of discharge；Second accumulator also with the 3rd hydraulic fluid port of first magnetic valve and the second solenoid valve described Seven hydraulic fluid ports connect, for making the fluid in second accumulator flow into institute through first magnetic valve or the second solenoid valve First chamber or the second chamber are stated, or, for receiving the fluid of the first chamber or second chamber discharge.
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| CN108591193B (en) * | 2018-05-25 | 2019-09-10 | 北京航空航天大学 | Electric hydrostatic actuator system with energy recycling system |
| CN108591144B (en) * | 2018-07-02 | 2023-07-25 | 福建工程学院 | Hydraulic system of motor-driven double-dosing pump double-accumulator distributed direct-drive excavator |
| CN114326390B (en) * | 2021-12-10 | 2024-03-15 | 北京航空航天大学 | High-precision anti-interference control method for electric energy feedback simulation system of electro-hydrostatic actuator |
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| JP2006177397A (en) * | 2004-12-21 | 2006-07-06 | Yanmar Co Ltd | Hydraulic circuit |
| CN101245794A (en) * | 2008-03-21 | 2008-08-20 | 太原理工大学 | Redundant electrohydraulic servo-controlling system |
| CN102061646A (en) * | 2010-10-26 | 2011-05-18 | 浙江大学 | Hydraulic excitation system of tamping device |
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| CN102864778A (en) * | 2012-09-11 | 2013-01-09 | 同济大学 | Hydraulic system for hydraulic pile hammer |
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| CN1815041A (en) * | 2005-02-06 | 2006-08-09 | 何扬东 | Concrete pump hydraulic system auxiliary energy-storage flow-increasing device |
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|---|---|---|---|---|
| JP2006177397A (en) * | 2004-12-21 | 2006-07-06 | Yanmar Co Ltd | Hydraulic circuit |
| CN101245794A (en) * | 2008-03-21 | 2008-08-20 | 太原理工大学 | Redundant electrohydraulic servo-controlling system |
| CN102061646A (en) * | 2010-10-26 | 2011-05-18 | 浙江大学 | Hydraulic excitation system of tamping device |
| CN102691681A (en) * | 2012-06-26 | 2012-09-26 | 重庆键英液压机电有限公司 | Novel three-point type bending machine hydraulic system with quick energy conservation |
| CN102864778A (en) * | 2012-09-11 | 2013-01-09 | 同济大学 | Hydraulic system for hydraulic pile hammer |
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