CN110259670A - A kind of driver - Google Patents
A kind of driver Download PDFInfo
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- CN110259670A CN110259670A CN201910509385.7A CN201910509385A CN110259670A CN 110259670 A CN110259670 A CN 110259670A CN 201910509385 A CN201910509385 A CN 201910509385A CN 110259670 A CN110259670 A CN 110259670A
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- valve
- working chamber
- driver
- flowline
- cavity
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- 239000012530 fluid Substances 0.000 claims abstract description 46
- 239000000919 ceramic Substances 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 17
- 241000826860 Trapezium Species 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 71
- 230000000694 effects Effects 0.000 description 10
- 241001672694 Citrus reticulata Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of driver, including actuator housing, the actuator housing outer wall is equipped with oil outlet and oiler, and inside is equipped with hydraulic package and Piezoelectric Driving component, forms closed working chamber between hydraulic package and Piezoelectric Driving component；Hydraulic package includes entering oil pipe into oil pipe, flowline and check valve assembly and communicating with oiler, flowline is communicated with oil outlet；Check valve assembly includes inlet one-way valve and Outlet check valves, inlet one-way valve limit fluid by it is described enter oil pipe flow to the working chamber；Outlet check valves limit fluid and flow to the flowline by the working chamber.Driver provided by the invention, after Piezoelectric Driving component accesses high frequency forward direction sinusoidal voltage, Piezoelectric Driving component changes the pressure to fluid in working chamber, the valve structure of check valve assembly will form resonance, promote flowline out of working chamber suck stream body and by oil outlet export, to realize high-frequency drive.
Description
Technical field
The present invention relates to piezoelectric hydraulic technical fields, in particular to a kind of driver.
Background technique
It is usually to use hinge that the shape of conventional aircraft wing, which changes, needs motor driven, and motor weight is big, therefore small
Type driver becomes the key point of break-through skill obstacle.In recent years, the fast-developing of intellectual material has design and research and development
There is the compact actuator of excellent properties to provide new way.It is based especially on driver designed by piezoelectric ceramics, principle is
Fluid is full of designed pump chamber, is powered so that circular fluidic flow generates pressure and flow output, and is finally converted
For certain driving force, driving effect is realized.It has the characteristics that small in size, energy is big and high reliablity, therefore in aviation
The fields such as space flight, mechanical building, accurate medical treatment have broad application prospects.
And existing piezoelectric ceramic actuator causes it to be not suitable for since the hysteresis quality of valve can not work under resonant frequency
The defect of high-frequency drive.Therefore the high Piezoelectric Ceramic of high-frequency drive, High power output, energy density can be taken into account by needing one
Device.
Summary of the invention
Problems solved by the invention is: existing piezoelectric ceramic actuator does not adapt to the problem of high-frequency drive.
To solve the above problems, the present invention provides a kind of driver, including actuator housing, the actuator housing outer wall
It is equipped with oil outlet and oiler；The inside of the actuator housing is equipped with hydraulic package and connect with described hydraulic package one end
Piezoelectric Driving component, form closed working chamber between the hydraulic package and the Piezoelectric Driving component；Described hydraulic group
Part include into oil pipe, flowline and check valve assembly, it is described enter oil pipe communicated with the oiler, the flowline with it is described
Oil outlet communicates；The check valve assembly includes inlet one-way valve and Outlet check valves, is entered described in the inlet one-way valve connection
Oil pipe and working chamber, and the inlet one-way valve limit fluid by it is described enter oil pipe flow to the working chamber；The outlet is unidirectional
Valve connects the flowline and working chamber, and the Outlet check valves limit fluid and flow to the flowline by the working chamber；
The Piezoelectric Driving component is suitable for exporting the displacement that changes into of electric energy transit check valve and the Outlet check valves, to adjust work
Pressure in chamber controls the folding of the inlet one-way valve and the Outlet check valves.
Optionally, the inlet one-way valve and the Outlet check valves include valve block, and the valve block, which is located at, is equipped with valve
On the valve seat in hole, and the valve block can cover the valve opening, and the valve block includes free end and fixing end, and the fixing end is
The short side of trapezium structure, the trapezium structure is connect with free end, and the long side of the trapezium structure is connect with the valve seat.
Optionally, the check valve assembly further includes upper valve and lower valve, and the upper valve passes through the valve seat and the lower valve
Connection, the upper valve with it is described enter oil pipe, the flowline connect, form working chamber between the lower valve and piezoelectric element.
Optionally, the inlet one-way valve further includes the first inflow hole that the upper valve is arranged in and lower valve is arranged in the
One cavity；The valve block folder is attached among first inflow hole and first cavity, and can be to first cavity direction
Deformation occurs.
Optionally, the Outlet check valves further include that the second cavity of the upper valve is arranged in and is arranged in the second of lower valve
Inflow hole；The valve block folder is attached among second inflow hole and second cavity, and can be to second cavity direction
Deformation occurs.
Optionally, the area of first inflow hole and two inflow hole is respectively less than the area of the valve block, and described
Shape of the shape of one cavity and the second cavity with the valve block matches.
Optionally, it is described enter oil pipe and the flowline bottom end be provided with annular groove, the annular groove is close for connecting
Sealing.
Optionally, the Piezoelectric Driving component includes driving structure and the piezoelectric ceramics that connect with the driving structure,
Under the piezoelectric ceramics working condition, the driving structure is moved axially along working chamber, changes working chamber volume, to make work
Intracavitary pressurization or generation negative pressure.
Optionally, sealing element is additionally provided between the driving structure and the actuator housing inner wall.
Optionally, the Piezoelectric Driving component further includes having clip, and the clip is set on the piezoelectric ceramics outer wall.
Optionally, the actuator housing includes first shell and second shell, the first shell and the second shell
Body is detachably connected with, and the hydraulic package is arranged in the first shell, and the Piezoelectric Driving component is arranged described second
In shell.
Optionally, be additionally provided on the first shell outer wall respectively with it is described enter oil pipe, the flowline and the work
The mounting hole communicated as chamber, the mounting hole have been detachably connected with sensor.
Optionally, the second shell outer wall is equipped with radiating groove, and the radiating groove is along the second shell length direction
Setting.
Compared with the existing technology, driver of the present invention has the advantage that
(1) driver provided by the invention, after Piezoelectric Driving component accesses high frequency forward direction sinusoidal voltage, Piezoelectric Driving
Component changes the pressure to fluid in working chamber, and the valve structure of check valve assembly will form resonance, promote flowline from work
Intracavitary sucking fluid is simultaneously exported by oil outlet, to realize high-frequency drive, and check valve assembly of the invention is provided simultaneously with list
To oily and unidirectional fuel-displaced function is entered, overall structure is optimized.
Driver provided by the invention, by optimizing valve structure, so that at work, valve sheet deformation amount is larger, single
Drawing liquid amount is larger, increases the output flow of driver；Meanwhile compared to existing rectangle valve block, the present invention is used trapezoidal
Valve block has better resilience and responsiveness when vibration, is suitable for high-frequency vibration.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the decomposition texture schematic diagram of driver of the present invention；
Fig. 2 is the cross-sectional view of driver of the present invention；
Fig. 3 is the partial structural diagram of driver of the present invention；
Fig. 4 is the partial structural diagram of first shell of the present invention；
Fig. 5 is the structural schematic diagram of valve seat of the present invention；
Fig. 6 is the structural schematic diagram of check valve assembly of the present invention；
Fig. 7 is the structural schematic diagram of traditional unidirectional valve leaf of the present invention；
Fig. 8 (a) is the output flow and voltage swing relationship (2.35Mpa) of rectangle valve block driver, and Fig. 8 (b) is trapezoidal
The output flow and voltage swing relationship (2.35Mpa) of valve block driver；
Fig. 9 (a) is that rectangle valve block driver goes out oil inlet pipe pressure difference and driving voltage relational graph (2.35Mpa), Fig. 9
(b) go out oil inlet pipe pressure difference and driving voltage relational graph (2.35Mpa) for trapezoidal valve block driver.
Description of symbols:
1- actuator housing, 11- first shell, 111- oiler, 112- oil outlet, 113- mounting hole, 114- counter sink,
12- second shell, 2- hydraulic package, 21- enter oil pipe, 22- flowline, 23- check valve assembly, 231- inlet one-way valve, 232-
Outlet check valves, 233- upper valve, the first inflow hole of 2331-, the second cavity of 2332-, the restriction of 2333- second hole, 234- valve seat,
235- lower valve, the first cavity of 2351-, 2352- second inlet hole, the restriction of 2353- first hole, 236- valve block, the free end 2361-,
2362- fixing end, 24- annular groove, 25- working chamber, 3- Piezoelectric Driving component, 31- driving structure, 311- connector, 312- are close
Packing piece, 313- piston, 32- piezoelectric ceramics, 33- rear cover, 34- clip, 35- sealing element, 4- sensor, 5- radiating groove, 6- are tight
Firmware, the unidirectional valve leaf of 7-.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In addition, the term " on " being previously mentioned in an embodiment of the present invention, "lower", "left", "right", "vertical", "horizontal"
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings；" length ", " width ", " thickness ",
"top", "bottom", "inner", "outside" are merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
It should be noted that be connected to hydraulic cylinder between the driver oiler and oil outlet of this paper, usually using entering oil
Oil pressure between mouth and oil outlet pushes hydraulic cylinder to do work.After the completion of assembly connection, in all cavitys of driver
It is filled with hydraulic oil, while the normal work of oil circuit for convenience, is also connected with oil pump in oiler.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
In conjunction with shown in Fig. 1-6, a kind of driver, including actuator housing 1,1 outer wall of actuator housing are equipped with oil outlet
112 and oiler 111；The Piezoelectric Driving that the inside of actuator housing 1 is equipped with hydraulic package 2 and connect with 2 one end of hydraulic package
Component 3 forms closed working chamber 25 between hydraulic package 2 and Piezoelectric Driving component 3；Hydraulic package 2 includes into oil pipe 21, goes out
Oil pipe 22 and check valve assembly 23 enter oil pipe 21 and communicate with oiler 111, and flowline 22 is communicated with oil outlet 112；Check valve
Component 23 includes inlet one-way valve 231 and Outlet check valves 232, and inlet one-way valve 231 is connected into oil pipe 21 and working chamber 25, and
Inlet one-way valve 231 limits fluid and flows to working chamber 25 by entering oil pipe 21；Outlet check valves 232 connect flowline 22 and working chamber
25, and Outlet check valves 232 limit fluid and flow to flowline 22 by working chamber 25；Piezoelectric Driving component 3 is suitable for converting electrical energy into
It is exported at displacement, to adjust the pressure in working chamber 25, controls the folding of inlet one-way valve 231 and Outlet check valves 232.
Driver provided in an embodiment of the present invention is deformed using the Cyclic flexion of piezoelectric material, and driving changes working chamber
25 volume realizes determining for fluid under the cooperation folding of inlet and outlet check valve 232 so as to cause pressure change in working chamber 25
To flowing, the activation configuration is compact simple, and small in size, energy density is high.
Inlet one-way valve 231 and Outlet check valves 232 include valve block 236, and valve block 236 is located at the valve seat equipped with valve opening
On 234, and valve block 236 can cover valve opening, and valve block 236 includes free end 2361 and fixing end 2362, and fixing end 2362 is ladder
The short side of shape structure, trapezium structure is connect with free end 2361, and the long side of trapezium structure is connect with valve seat 234.
As shown in connection with fig. 5, specifically, 234 upper valve of valve seat 233 quantity is 2, and 2 valve blocks 236 are respectively corresponded into oil
Pipe 21 and flowline 22.The free end 2361 of valve block 236 is with disc-shaped structure jaggy, and fixing end 2362 is trapezoidal knot
Structure, the width of the short straight flange of trapezium structure are L1, and the width of long straight flange is L2, and the short straight flange of L2 > L1 and free end 2361 lack
It is connected at mouthful, long straight flange is connect with valve seat 234.And inlet one-way valve 231 and Outlet check valves 232 pass through the deformation of valve block 236
Realize access, when valve block 236 deformation occurs expose valve opening, 234 place plane of valve seat and 236 place planar shaped of valve block are at an acute angle,
Namely valve port is opened, fluid can flow in or out from valve port.
Wherein, the value range that the width of the short straight flange of trapezium structure is L1 and the width of long straight flange is L2 is 1.2~
The value range of 1.5mm, L1/L2 are 0.8~0.9.It is practiced according to inventor, finds the valve block when L1, L2 are respectively less than 1.2mm
236 is smaller with the connection area of valve seat 234, in valve block 236 for a long time vibration, the risk for fractureing or failing easily occurs；And
When L1, L2 are all larger than 1.5mm, the area of corresponding first cavity 2351 and the second cavity 2332 becomes larger, and through-hole is excessive,
The structural strength that then will lead to upper valve 233 and lower valve 235 reduces, and reduces the service life of driver.
Correspondingly, the power of free end 2361 is supported all to fall on the short straight flange of fixing end 2362, in the value range for working as L1/L2
When less than 0.8, the length difference of the long straight flange and short straight flange of fixing end 2362 is excessive, the company of fixing end 2362 and free end 2361
Junction product is smaller, and in valve block 236 for a long time vibration, the short straight flange of fixing end 2362 receiving pressure is excessive, and free end 2361 is easy
There is the risk to fracture；And when the value range of L1/L2 is greater than 0.9, the length of the long straight flange of fixing end 2362 and short straight flange
Degree tends to be equal, the effect for not having and improving intrinsic frequency, increase driver output flow.
As shown in connection with fig. 7, existing driver unidirectional valve leaf 7 as shown, existing unidirectional valve leaf 7 fixing end
2362 be rectangular configuration, and the width of side is equal corresponding thereto with the width for the side that free end 2361 connects for fixing end 2362.
For convenience of description is understood, traditional unidirectional valve leaf 7 is known as rectangle valve block, valve block 236 provided in an embodiment of the present invention is claimed
For trapezoidal valve block.
Compared with rectangle valve block, trapezoidal valve block has better resilience performance when vibration, while being based on structural dynamic
Derivation, intrinsic frequency is higher when trapezoidal valve block vibrates, therefore trapezoidal valve block can have better response, be suitable for high frequency
Vibration.
Fig. 8 (a) is the output flow and voltage swing relational graph (2.35Mpa) of rectangle valve block driver, and Fig. 8 (b) is trapezoidal
The output flow and voltage swing relational graph (2.35Mpa) of valve block driver, it can be seen from the figure that the driving frequency of 200Hz
Under, output flow of the rectangle valve block driver in driving voltage 1000v is 2.7ml/s, and trapezoidal valve block driver is driving
Output flow when voltage 1000v is 3.0ml/s, and under equal conditions, the flow-rate ratio rectangle valve of trapezoidal valve block driver output
Piece driver it is big, it is contemplated that trapezoidal valve block by pump promoted pressure also can be more than rectangle valve block.
Fig. 9 (a) is that rectangle valve block driver goes out oil inlet pipe pressure difference and driving voltage relational graph (2.35Mpa), Fig. 9
(b) go out oil inlet pipe pressure difference and driving voltage relational graph (2.35Mpa) for trapezoidal valve block driver, here, the driver
Disengaging oil pipe line pressure difference is, under driver working condition, the difference of the pressure of the pressure and oiler 111 of oil outlet 112
Value.
It can be seen in figure 9 that rectangle valve block driver goes out oil inlet under the driving frequency of 200Hz, 1000v driving voltage
Pipeline pressure difference is 4.0Mpa, and it is 5.3Mpa that trapezoidal valve block driver, which goes out oil inlet pipe pressure difference, it was demonstrated that under equal conditions, ladder
The pressure difference that shape valve block driver passes in and out oil pipe line is greater than the pressure difference of rectangle valve block driver disengaging oil pipe line.Therefore, this hair
The driver that bright embodiment provides, by optimizing 236 structure of valve block, so that at work, the larger (valve port of 236 deformation quantity of valve block
It is big to open displacement), single drawing liquid amount is larger namely output flow is big.And due in actual use, if in fluid containing bubble or
Impurity, single drawing liquid amount is larger to avoid valve port from blocking, and guarantee the normal work of driver.
Wherein, actuator housing 1 includes first shell 1 and second shell 12,12 detachable of first shell 1 and second shell
It links together, wherein first shell 1 and second shell 12 are equipped with the interconnecting piece with counter sink 114, on the two interconnecting piece
Counter sink 114 is bolted to connection, as a result, convenient for handling and maintenance between the two.Hydraulic package 2 is arranged first
In shell 1, Piezoelectric Driving component 3 is arranged in the second shell 12；Under 12 assembled state of first shell 1 and second shell,
First shell 1 and second shell 12 are sealed in junction, and a part of Piezoelectric Driving component 3 protrudes into hydraulic package 2, and with
Closed working chamber 25 is formed between hydraulic package 2, when being full of fluid in working chamber 25 as a result, Piezoelectric Driving component 3 is protruded into
Part in working chamber 25 can be moved along 25 axial direction of working chamber, apply pressure to the fluid in working chamber 25, to control
The folding of inlet one-way valve 231 and Outlet check valves 232 processed.
As shown in connection with fig. 3, check valve assembly 23 further includes upper valve 233 and lower valve 235, and upper valve 233 is by valve seat 234 under
Valve 235 connect, upper valve 233 with enter oil pipe 21, flowline 22 is connect, between lower valve 235 and piezoelectric element formation working chamber 25.Tool
Body, since inlet one-way valve 231 is connected into oil pipe 21 and working chamber 25, and limits fluid and flow to working chamber by entering oil pipe 21
25；Outlet check valves 232 connect flowline 22 and working chamber 25, and limit fluid and flow to flowline 22 by working chamber 25.On and
Valve 233 simultaneously with enter oil pipe 21 and flowline 22 is connect, thus it can be seen that 231 structure of inlet one-way valve and Outlet check valves
It is unidirectional although 232 structures are integral namely inlet one-way valve 231 respectively corresponds different oil pipes in Outlet check valves 232
Valve module 23, which is provided simultaneously with, unidirectionally enters oily and unidirectional fuel-displaced function, overall structure is optimized, so that activation configuration is more compact
Simply.
Inlet one-way valve 231 further includes that the first inflow hole 2331 of upper valve 233 is arranged in and is arranged in the first of lower valve 235
Cavity 2351；The folder of valve block 236 is attached among the first inflow hole 2331 and first cavity 2351, and can be to the first cavity 2351
Deformation occurs in direction.Inlet one-way valve 231 includes the first inflow hole 2331 being fixedly connected sequentially from top to bottom, 236 and of valve block
First cavity 2351, when valve block 236 is to when deformation occurs in the first cavity 2351 direction, valve port is opened downwards, from entering oil pocket outflow
Fluid second cavity 2332 is flowed to by valve port after the first inflow hole 2331, and enter work by the second cavity 2332
Make to realize unidirectional oil absorptive function in chamber 25.
Outlet check valves 232 further include that the second cavity 2332 of upper valve 233 is arranged in and is arranged in the second of lower valve 235 to enter
Discharge orifice 2352；The folder of valve block 236 is attached among the second inflow hole 2352 and the second cavity 2332, and can be to 2332 direction of the second cavity
Deformation occurs.That is, Outlet check valves 232 include the second cavity 2332 being fixedly connected sequentially from top to bottom, valve block 236 and the
Two inflow hole 2352, when valve block 236 is to when deformation occurs in the second cavity 2332 direction, valve port is opened up, in working chamber 25
Fluid enters the second inflow hole 2352 from working chamber 25 under pressure, and flows upwardly toward the first cavity 2351 by valve port,
Enter oil outlet chamber by the second cavity 2332, and under pressure, fluid goes out the outflow of hydraulic fluid port 112, realizes unidirectional fuel-displaced function
Energy.
It is understood that the area of the first inflow hole 2331 and the second inflow hole 2352 is respectively less than the area of valve block 236,
Shape of the shape of first cavity 2351 and the second cavity 2332 with valve block 236 matches.Since inlet one-way valve 231 is used for
Limiting fluid has the valve block 236 for flowing to working chamber 25 namely inlet one-way valve 231 into oil pipe 21 that cannot send out towards 21 direction of oil pipe is entered
Change shape, and upper valve 233 plays backstop action to valve block 236.If the area of the first inflow hole 2331 is greater than 236 area of valve block,
Valve block 236 is possible to deform at the first inflow hole 2331, leads to not realize unidirectional oil absorptive function.When the first inflow hole 2331
Area be much smaller than 236 area of valve block when, be not only convenient for the inflow of fluid, moreover it is possible to prevent valve block 236 towards enter 21 direction of oil pipe become
Shape.
Certainly, if the area of the first inflow hole 2331 is greater than 236 area of valve block, and the first inflow hole 2331 and valve block 236
When being arranged in a staggered manner, backstop action can also be played, but reduces the single flow of fluid in this way, is unfavorable for driver work.
Correspondingly, flowing to flowline 22 since inlet one-way valve 231 is used to limit fluid operating chamber 25, namely outlet is unidirectionally
The valve block 236 of valve 232 cannot deform towards 25 direction of working chamber, at this point, lower valve 235 plays backstop action to this valve block 236.
If the area of the second inflow hole 2352 is greater than 236 area of valve block, valve block 236 is possible to deform at the second inflow hole 2352,
Lead to not realize unidirectional fuel-displaced function.
The shape of first cavity 2351 and the second cavity 2332 and the shape of valve block 236 can match, can not also
Match, as long as valve block 236 can in the operating condition, towards 2332 Direction distortion of the first cavity 2351 or the second cavity.This hair
Bright embodiment preferably matches, can be in the case where not influencing 234 structural strength of valve seat, utmostly just under this design
It is deformed in valve block 236, guarantees that valve port opens larger displacement.
It is understood that due to the first inflow hole of area ratio 2331 and of the first cavity 2351 and the second cavity 2332
The area of two inflow hole 2352 is big, and to make fluid in the more continuous smooth of flowing, the first cavity 2351 and the second cavity 2332 are
The through hole being arranged in lower valve 235 and upper valve 233 that fluid passes through, and the first cavity 2351 and the second cavity can be accommodated
2332 are greater than the aperture of opposite end close to the aperture of one end of valve block 236.That is, the first cavity 2351 is considered as to set
The recessed portion in lower valve 235 is set, and recessed portion bottom end is equipped with through hole.In this way, valve block 236 can be given, there are deformations
Space, meanwhile, row's suction of fluid will not be influenced because aperture is excessive.
In embodiments of the present invention, the hole being arranged on the first cavity 2351 is defined as the first restriction hole 2353, be arranged
Hole on the second cavity 2332 is defined as the second restriction hole 2333.Under 231 open state of inlet one-way valve, fluid successively flows
It is included: the first inflow hole 2331, valve block 236, the first cavity 2351 and the first restriction hole 2353；In Outlet check valves 232
Under open state, fluid is followed by including: the second inflow hole 2352, valve block 236, the second cavity 2332 and second limit hole
2333。
Head loss is obtained to reduce when fluid flows through and becomes a mandarin check valve and stream check valve out, namely reduces fluid pressure loss
Coefficient, each in fluid flowing have area change to obtain position, are provided with lead angle.As shown in connection with fig. 3, in the second inflow hole
2352 are provided with chamfering close to one end of working chamber 2, flow into convenient for fluid.Certainly, chamfering also can be set in other positions,
This different illustration.
It is provided with annular groove 24 with 22 bottom end of flowline in addition, entering oil pipe 21, annular groove 24 is for connecting sealing element 35.
The center line of annular groove 24 is located along the same line in the center line for entering oil pipe 21 or flowline 22.Sealing element 35 is arranged can be to prevent
Stop and being connected into oil pipe 21 with flowline 22, while can prevent from guaranteeing the close of oil piping system into 22 oil leak of oil pipe 21 and flowline
Feng Xing.
Specifically, Piezoelectric Driving component 3 includes driving structure 31 and the piezoelectric ceramics 32 connecting with driving structure 31, is pressing
Under 32 working condition of electroceramics, driving structure 31 is moved axially along working chamber 25, changes 25 volume of working chamber, to make working chamber
Pressurization or generation negative pressure in 25.
Driving structure 31 includes connector 311, sealing partition 312 and piston 313, and connector 311 passes through sealing partition 312
It is fixedly connected with piston 313, piston 313 is fixedly connected with 32 one end of piezoelectric ceramics.Specifically, piston 313 is connected by screw to
It is fixed on piezoelectric ceramics 32, connector 311 is fixed on piston 313 by four pieces of screws, among connector 311 and piston 313
Fixing seal partition 312, when piezoelectric ceramics 32 works, high frequency micro-displacement is transmitted to work by driving structure 31
In oil pocket.
Sealing element 35 is additionally provided between 1 inner wall of driving structure 31 and actuator housing.That is, in sealing 312 He of partition
Sealing element 35 is connected among first shell 1.Sealing element 35 described in the embodiment of the present invention is annealing red copper sealing ring, and annealing is purple
Copper material is softer, is compacted using the sealing element 35, can play good sealing effect.It is close and due to having used copper ring sealing
It is much higher to seal nitrile rubber circle used in actuator seal of the effect than most of prior art, is mentioned so as to further stable
Rise from oily oil pressure.
In addition, to mitigate driver total quality, actuator housing 1 can use hard aluminium alloy；And it is enhancing driving
The structural strength of device main component, check valve assembly 23 and driving structure 31 are stainless steel material, it is preferred that valve block 236 is adopted
With the spring steel of 0.2mm thickness.
Piezoelectric Driving component 3 further includes having rear cover 33, and rear cover 33 is torn open with piezoelectric ceramics 32 far from one end of driving structure 31
Unload formula connection.Rear cover 33 and 12 collective effect of second shell can limit translation of the piezoelectric ceramics 32 in fore-and-aft plane and turn
It is dynamic, improve the working efficiency of piezoelectric ceramics 32.Simultaneously rear cover 33 is set as being detachably connected, the height of adjustable working chamber 25
Degree, to meet different working conditions.
In embodiments of the present invention, the height of working chamber 25 is 0.8~1.0mm, preferably 0.9mm.25 height of working chamber
If it exceeds 1.0mm, required pressure in working chamber 25 when improving realization unidirectional fuel-displaced function, to reduce driver
Oil pump capacity, have an adverse effect to the using effect of driver.
Piezoelectric Driving component 3 further includes having clip 34, and clip 34 is set on 32 outer wall of piezoelectric ceramics.Clip 34 is located at pressure
For electroceramics 32 between second shell 12, clip 34 and 12 collective effect of second shell can limit piezoelectric ceramics 32 in second shell
Translation and rotation in body 12 in transverse plane, to improve the mounting stability of piezoelectric ceramics 32.
Be additionally provided on 1 outer wall of first shell respectively with the mounting hole that enters oil pipe 21, flowline 22 and working chamber 25 and communicate
113, mounting hole 113 has been detachably connected with sensor 4.Sensor 4 is pressure sensor, and is fixed on first by fastener 6
On 1 outer wall of shell.
Enter oil pocket and oil outlet chamber and all connect sensor 4, by computer, can be directly acquainted with piezoelectric pump working condition,
Pressure promotes the pressure difference at situation and 111 both ends of oil outlet 112 and oiler.
Sensor 4 is connected inside working chamber 25, the liquid pressure variation in working chamber 25 can be directly detected, to judge
The service life of one-way valve plate 236, degree of fatigue and whether need replacing out.
12 outer wall of second shell is equipped with radiating groove 5, and radiating groove 5 is arranged along 12 length direction of second shell.Radiating groove 5
Quantity can be to be multiple, and multiple radiating grooves 5 are along 12 outer wall week of second shell along being distributed.Piezoelectric ceramics 32 has much at work
Fever, setting radiating groove 5 can be good at radiating, to protect piezoelectric ceramics 32；Meanwhile under the good situations that radiate, heat dissipation
5 temperature of slot and 32 temperature of piezoelectric ceramics are close, can be by installing sensor 4 on radiating groove 5, to monitor piezoelectric ceramics 32
Temperature guarantees that driver carries out driving work under secured premise.
Driver provided in an embodiment of the present invention is at work comprising fuel-displaced and enter oily two steps:
High frequency sinusoidal forward voltage is applied to piezoelectric ceramics 32, due to the inverse piezoelectric effect of piezoelectric ceramics 32, piezoelectric ceramics
32 are deformed, and deformation drives piston 313 to move up by piezoelectric ceramics 32, and displacement is transmitted in working chamber 25, squeeze
The fluid in working chamber 25 is pressed, Fluid pressure increases in chamber, and the valve block 236 for the check valve that becomes a mandarin is due to no the first cavity of normal direction 2351
It is deformed, become a mandarin closed check valve；Meanwhile under Fluid pressure effect, the valve block 236 of check valve is flowed out to the second cavity
2332 are deformed, and flow check valve out and open；It is now in and unidirectionally goes out oil condition, fluid has arrived after the second cavity 2332
In oil pipe 22, and flowed out from oil outlet 112.
Start to reduce when applying high frequency sinusoidal forward voltage, the deformation of piezoelectric ceramics 32 starts to restore, and driving piston 313 returns
It moves back and the pressure in working chamber 25 is caused to become smaller, fluid flows in oil pipe 21 from oiler 111, and enters the first inflow hole
2331, under the suction function of working chamber 25, the valve block 236 for the check valve that becomes a mandarin is deformed to the first cavity 2351, and become a mandarin list
It is opened to valve；Simultaneously as the valve block 236 for going out stream check valve is deformed without the second cavity of normal direction 2332, check valve is flowed out and is closed
It closes；It is now in unidirectional oil suction state, fluid enters in working chamber 25 after the first cavity 2351.
The groundwork process of driver provided in an embodiment of the present invention is as follows:
Firstly, all cavitys in driver are full of hydraulic oil using pressure charging pump, and keep certain pressure；Then,
Fluid enters in oil pipe 21 by entering oilhole, and enters to be provided with accumulator in oil pipe 21 and keep the lateral pressure constant, Zhi Houliu
Body becomes a mandarin check valve, into working chamber 25；When piezoelectric ceramics 32 works, piston 313 can be pushed to move back and forth, flowed at this time
Body is compressed in 25 body of working chamber, and enters flowline 22 by going out stream check valve, finally, driven fluid is by fuel-displaced
Mouth 112 enters fluid pressure line.It is connected to hydraulic cylinder between oil outlet 112 and oiler 111, at this point, oil outlet 112 and oiler
Oil pressure between 111 can push hydraulic cylinder to do work.Above procedure back and forth carries out, and realizes the cavity circulation of fluid, works as liquid
When cylinder pressure is pulled to side, change the direction of motion of hydraulic cylinder by reversal valve, drives 32 hydraulic pump of piezoelectric ceramics to carry out again
Work.
Although the disclosure discloses as above, the protection scope of the disclosure is not limited only to this.Those skilled in the art, not
Under the premise of being detached from spirit and scope of the present disclosure, it can make various changes and modify, these changes will fall into this with modification
The protection scope of invention.
Claims (13)
1. a kind of driver, which is characterized in that including actuator housing (1), actuator housing (1) outer wall is equipped with fuel-displaced
Mouth (112) and oiler (111)；The inside of the actuator housing (1) be equipped with hydraulic package (2) and with the hydraulic package
(2) the Piezoelectric Driving component (3) of one end connection, forms closed between the hydraulic package (2) and the Piezoelectric Driving component (3)
Working chamber (25)；
The hydraulic package (2) include into oil pipe (21), flowline (22) and check valve assembly (23), it is described enter oil pipe (21)
It is communicated with the oiler (111), the flowline (22) communicates with the oil outlet (112)；
The check valve assembly (23) includes inlet one-way valve (231) and Outlet check valves (232), the inlet one-way valve
(231) enter oil pipe (21) and the working chamber (25) described in connection, and the inlet one-way valve (231) restriction fluid by it is described enter
Oil pipe (21) flows to the working chamber (25)；The Outlet check valves (232) connect the flowline (22) and working chamber (25),
And the Outlet check valves (232) limit fluid and flow to the flowline (22) by the working chamber (25)；
The Piezoelectric Driving component (3) is suitable for converting electric energy to displacement output, to adjust the pressure in working chamber (25), control
The folding of the inlet one-way valve (231) and the Outlet check valves (232).
2. driver according to claim 1, which is characterized in that the inlet one-way valve (231) and the outlet are unidirectional
Valve (232) includes valve block (236), and the valve block (236) is located on the valve seat (234) equipped with valve opening, and the valve block
(236) valve opening can be covered, the valve block (236) includes free end (2361) and fixing end (2362), the fixing end
It (2362) is trapezium structure, the short side of the trapezium structure is connect with free end (2361), the long side of the trapezium structure
It is connect with the valve seat (234).
3. driver according to claim 2, which is characterized in that the check valve assembly (23) further includes upper valve (233)
With lower valve (235), the upper valve (233) is connect by the valve seat (234) with the lower valve (235), the upper valve (233) with
It is described enter oil pipe (21), the flowline (22) connection, between the lower valve (235) and piezoelectric element formation working chamber (25).
4. driver according to claim 3, which is characterized in that the inlet one-way valve (231) further includes being arranged in institute
It states the first inflow hole (2331) of upper valve (233) and the first cavity (2351) in the lower valve (235) is set；The valve block
(236) folder is attached to first inflow hole (2331) and first cavity (2351) is intermediate, and can be to first cavity
(2351) deformation occurs in direction.
5. driver according to claim 3, which is characterized in that the Outlet check valves (232) further include being arranged in institute
It states the second cavity (2332) of upper valve (233) and the second inflow hole (2352) in lower valve (235) is set；The valve block (236)
Folder is attached to second inflow hole (2352) and second cavity (2332) is intermediate, and can be to the second cavity (2332) side
To deformation occurs.
6. driver according to claim 4 or 5, which is characterized in that first inflow hole (2331) or described second
The area of inflow hole is respectively less than the shape of the area of the valve block (236), first cavity (2351) or the second cavity (2332)
Shape of the shape with the valve block (236) matches.
7. any driver in -5 according to claim 1, which is characterized in that it is described enter oil pipe (21) and the flowline
(22) bottom end is provided with annular groove (24), and the annular groove (24) is for connecting sealing element (34).
8. any driver in -5 according to claim 1, which is characterized in that the Piezoelectric Driving component (3) includes driving
Dynamic structure (31) and the piezoelectric ceramics (32) being connect with the driving structure (31), in the piezoelectric ceramics (32) working condition
Under, the driving structure (31) moves axially along working chamber (25), changes working chamber (25) volume, to make in working chamber (25)
Pressurization generates negative pressure.
9. driver according to claim 8, which is characterized in that the driving structure (31) and the actuator housing
(1) sealing element (34) are additionally provided between inner wall.
10. driver according to claim 9, which is characterized in that the Piezoelectric Driving component (3) further includes having clip
(34), the clip (34) is set on the piezoelectric ceramics (32) outer wall.
11. according to claim 1-5, driver described in any one of 9-10, which is characterized in that the actuator housing (1)
Including first shell (11) and second shell (12), the first shell (11) is detachably connected with the second shell (12),
In the first shell (11), the Piezoelectric Driving component (3) is arranged in the second shell for hydraulic package (2) setting
(12) in.
12. driver according to claim 11, which is characterized in that be additionally provided on first shell (11) outer wall multiple
Respectively with it is described enter the mounting hole (113) that communicates of oil pipe (21), the flowline (22) and the working chamber (25), the peace
Dress hole (113) has been detachably connected with sensor (4).
13. driver according to claim 11, which is characterized in that second shell (12) outer wall is equipped with radiating groove
(5), the radiating groove (5) is arranged along the second shell (12) length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910509385.7A CN110259670B (en) | 2019-06-13 | 2019-06-13 | Driver |
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| CN201910509385.7A CN110259670B (en) | 2019-06-13 | 2019-06-13 | Driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849531A (en) * | 2019-10-18 | 2020-02-28 | 成都凯天电子股份有限公司 | Method for observing pressure gauge by directionally locking pipeline system |
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