CN101265890A - Piezoelectric hydraulic pump - Google Patents
Piezoelectric hydraulic pump Download PDFInfo
- Publication number
- CN101265890A CN101265890A CNA200810064461XA CN200810064461A CN101265890A CN 101265890 A CN101265890 A CN 101265890A CN A200810064461X A CNA200810064461X A CN A200810064461XA CN 200810064461 A CN200810064461 A CN 200810064461A CN 101265890 A CN101265890 A CN 101265890A
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- China
- Prior art keywords
- guide pad
- end cap
- guide block
- cylinder body
- hydraulic pump
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The invention diskloses a piezoelectric hydraulic pump and relates to a hydraulic pump, solves the problems of low output pressure, complex structure and difficult manufacture of the existing pump. A guide block (1-1) of the pump is arranged on the left end inside the cavity of a cylinder body (6); a guide block (1-2) is arranged on the right end inside the cavity of the cylinder body (6); a boss (17) is arranged on the right face of the guide block (1-2); the boss (17) is provided with a saucer washer (8); an O-shaped circle (7) is arranged on an external ring of the guide block (1-2); a piezoelectric actuator (5) is arranged inside the cylinder body (6); the left face of the guide block (1-1) is embedded on the right face of a left cover cap (4); a sealing cavity (9) is arranged between the right face of the guide block (1-2) and a right cover cap (10); the left cover cap (4) is fixedly connected with the right cover cap (10) via a hexagon socket screw (2); an oil inlet valve (13) and an oil outlet valve (14) are arranged between the left face of the right cover cap (10) and a cover plate (11). The piezoelectric hydraulic pump has the advantages of simple structure, small volume, light weight, low energy consumption, noiselessness and no electromagnetic interference.
Description
Technical field
The present invention relates to a kind of oil hydraulic pump.
Background technique
The minimum dimension of electric elements depends on maximum useful flux density, and maximum useful flux density is subjected to the limitation of magnetic saturation of magnetic material, the Magnetic flux density of magnetic material reaches a definite saturation value with the increase of externally-applied magnetic field field intensity, improves power so can only increase the size of magnetic material.Therefore the physical dimension of electric elements is big, power-mass ratio is little; In the application that drives microminiature machinery, traditional oil hydraulic pump accuracy of manufacturing height, complex structure, the difficulty of manufacturing and cost are all very high.At present, majority utilizes the delivery pressure of the piezoelectric pump that piezoelectric material is developed into very little, far can not drive actuator.
Summary of the invention
The present invention is big for the piezoelectric pump physical dimension that solves existing majority and utilize piezoelectric material to be developed into, power-mass ratio is little, delivery pressure is very little, far can not drive actuator and produce motion, traditional hydraulic pump structure is very complicated, the problem that difficulty is big and cost is high of manufacturing, a kind of piezoelectric hydraulic pump is provided, and the concrete technological scheme that addresses the above problem is as follows:
The present invention is by first guide pad, second guide pad, socket head screw, left end cap, piezoelectric actuator, cylinder body, O type circle, belleville spring, right end cap, cover plate, pipe joint, oiling valve and outlet valve are formed, first guide pad is located at the left end in the cylinder chamber, second guide pad is located at the right-hand member in the cylinder chamber, the right side of second guide pad is provided with boss, boss is provided with belleville spring, the outer shroud of second guide pad is provided with O type circle, piezoelectric actuator is located in the chamber of cylinder body, the left side of first guide pad is embedded on the right side of left end cap, medial concavity at the second guide pad right side and right end cap left end is provided with Seal cage, left end cap and right end cap socket head screw are affixed, between the left side of right end cap and cover plate, be provided with oiling valve and outlet valve, the left side and the cover plate of right end cap are affixed by socket head screw, on the cover board are provided with inlet connector and flowline connection to subsea.
Advantage of the present invention is that the driving source of conventional pump part, drive part and pump housing three are integrated, and the amplitude and the frequency of the drive signal by changing the piezoelectric actuator two ends can accurately be controlled the output flow of piezoelectric hydraulic pump.Compare with traditional piezoelectric hydraulic pump have simple in structure, volume is little, in light weight, power consumption is low, the advantage of noiseless, no electromagnetic interference.According to applying voltage or FREQUENCY CONTROL output flow.The piezoelectric hydraulic pump performance index: under the driving of voltage 1000sin (100 л t), output flow reaches 160mL/min, and Maximum allowable pressure reaches 5.7MPa.The power of piezoelectric hydraulic pump of the present invention and mass ratio are bigger 8～10 times than conventional motors or oil hydraulic pump.This piezoelectric hydraulic pump is widely used in aerospace vehicle, robot, automobile, medical apparatus, micromechanics field.
Description of drawings
Fig. 1 is a structural representation of the present invention, and Fig. 2 is the right elevation of Fig. 1.3 is packing rings among the figure, the 15th, and wire way, the 16th, cable.
Embodiment
Embodiment one: describe present embodiment in conjunction with Fig. 1.Present embodiment is by the first guide pad 1-1, the second guide pad 1-2, socket head screw 2, left end cap 4, piezoelectric actuator 5, cylinder body 6, O type circle 7, belleville spring 8, right end cap 10, cover plate 11, pipe joint 12, oiling valve 13 and outlet valve 14 are formed, the first guide pad 1-1 is located at the left end in cylinder body 6 chambeies, the second guide pad 1-2 is located at the right-hand member in cylinder body 6 chambeies, the right side of the second guide pad 1-2 is provided with boss 17, belleville spring 8 is fixed on the boss 17, the outer shroud of the second guide pad 1-2 is provided with O type circle 7, piezoelectric actuator 5 is located in the chamber of cylinder body 6, the left side of the first guide pad 1-1 is embedded on the right side of left end cap 4, medial concavity at the second guide pad 1-2 right side and right end cap 10 left ends is provided with Seal cage 9, left end cap 4 and right end cap 10 socket head screws 2 are affixed, between the left side of right end cap 10 and cover plate 11, be provided with oiling valve 13 and outlet valve 14, the left side of right end cap 10 and cover plate 11 are affixed by socket head screw 2, are provided with inlet connector 12-1 and flowline connection to subsea 12-2 on cover plate 11.
Embodiment two: the left end of the cylinder body 6 of present embodiment has wire way 15, and piezoelectric cable 16 is connected with power supply.
The present invention adopts and on the boss 17 of the second guide pad 1-2 belleville spring 8 is set, form Seal cage 9 in the right side of the second guide pad 1-2 and the medial concavity of right end cap 10 left ends, when system pressure exceeds working pressure, liquid will overflow from the surface of contact of belleville spring 8 with right end cap 10, plays the effect of safety valve.Because of spring strain and load have good linear relationship, can play the dynamics of improvement system again, make piezoelectric actuator 5 obtain bigger amplitude, improved the output flow of piezoelectric hydraulic pump.
Working principle:
Utilize the inverse piezoelectric effect of piezoelectric material, when applying alternating voltage 1000sin (ω t) for piezoelectric actuator 5, piezoelectric actuator 5 promotes the generation of the second guide pad 1-2 substantially horizontal and moves back and forth, make the volume of Seal cage 9 produce cyclically-varying because of vibration, suction by in line check valve sheet on the oiling valve 13 and the fuel-displaced check valve sheet controlling liquid on the outlet valve 14 and pumping is during oil suction, when Seal cage 9 volumes become big, in line check valve is opened, fuel-displaced closed check valve; When pressing oil, when Seal cage 9 volumes diminish, fuel-displaced one-way valve opens, in line check valve is closed.
Satisfying under the condition of usage requirement, the piezoelectric actuator 5 that can select different size is to reduce the volume of piezoelectric hydraulic pump.The present invention selects for use P-40.16 type piezoelectric actuator that general love nanometer displacement technology Co., Ltd produces as driving element.
Table one is that parameter, the table two of P-40.16 type piezoelectric actuator is the parameter of belleville spring 8.
Table one piezoelectric actuator parameter
| Model | Maximum displacement (μ m) | External diameter (mm) | Length (mm) | Maximum ouput force (N) | Rigidity (N/ μ m) | Resonant frequency (kHz) |
| P-016.40 | 60 | 16 | 54 | 6000 | 100 | 20 |
Table two butterfly spring parameter
Claims (1)
1, piezoelectric hydraulic pump, it is by first guide pad (1-1), second guide pad (1-2), socket head screw (2), left end cap (4), piezoelectric actuator (5), cylinder body (6), O type circle (7), belleville spring (8), right end cap (10), cover plate (11), pipe joint (12), oiling valve (13) and outlet valve (14) are formed, it is characterized in that first guide pad (1-1) is located at the left end in cylinder body (6) chamber, second guide pad (1-2) is located at the right-hand member in cylinder body (6) chamber, the right side of second guide pad (1-2) is provided with boss (17), boss (17) is provided with belleville spring (8), the outer shroud of second guide pad (1-2) is provided with O type circle (7), piezoelectric actuator (5) is located in the chamber of cylinder body (6), the left side of first guide pad (1-1) is embedded on the right side of left end cap (4), medial concavity at second guide pad (1-2) right side and right end cap (10) left end is provided with Seal cage (9), left end cap (4) and right end cap (10) are affixed by socket head screw (2), between the left side of right end cap (10) and cover plate (11), be provided with oiling valve (13) and outlet valve (14), the left side of right end cap (10) and cover plate (11) are affixed by socket head screw (2), are provided with inlet connector (12-1) and flowline connection to subsea (12-2) on cover plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200810064461XA CN100547240C (en) | 2008-05-07 | 2008-05-07 | Piezoelectric hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200810064461XA CN100547240C (en) | 2008-05-07 | 2008-05-07 | Piezoelectric hydraulic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101265890A true CN101265890A (en) | 2008-09-17 |
| CN100547240C CN100547240C (en) | 2009-10-07 |
Family
ID=39988514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200810064461XA Active CN100547240C (en) | 2008-05-07 | 2008-05-07 | Piezoelectric hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100547240C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192135A (en) * | 2011-06-24 | 2011-09-21 | 浙江师范大学 | Piezoelectric stack pump provided with sensor |
| CN102425534A (en) * | 2011-10-13 | 2012-04-25 | 陕西航空电气有限责任公司 | Electrical pump provided with stable structure |
| CN102709463A (en) * | 2012-06-28 | 2012-10-03 | 陈�峰 | Device and manufacturing method for packing piezoelectric ceramic |
| CN105889055A (en) * | 2014-10-21 | 2016-08-24 | 镇江大成新能源有限公司 | Electric pump of stable structure |
-
2008
- 2008-05-07 CN CNB200810064461XA patent/CN100547240C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192135A (en) * | 2011-06-24 | 2011-09-21 | 浙江师范大学 | Piezoelectric stack pump provided with sensor |
| CN102425534A (en) * | 2011-10-13 | 2012-04-25 | 陕西航空电气有限责任公司 | Electrical pump provided with stable structure |
| CN102425534B (en) * | 2011-10-13 | 2014-12-31 | 陕西航空电气有限责任公司 | Electrical pump provided with stable structure |
| CN102709463A (en) * | 2012-06-28 | 2012-10-03 | 陈�峰 | Device and manufacturing method for packing piezoelectric ceramic |
| CN102709463B (en) * | 2012-06-28 | 2014-03-12 | 陈�峰 | Manufacturing method for piezoelectric ceramic packing device |
| CN105889055A (en) * | 2014-10-21 | 2016-08-24 | 镇江大成新能源有限公司 | Electric pump of stable structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100547240C (en) | 2009-10-07 |
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