CN206361072U - The magnetorheological actuator acted on based on ultrasonic near field - Google Patents
The magnetorheological actuator acted on based on ultrasonic near field Download PDFInfo
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- CN206361072U CN206361072U CN201720019384.0U CN201720019384U CN206361072U CN 206361072 U CN206361072 U CN 206361072U CN 201720019384 U CN201720019384 U CN 201720019384U CN 206361072 U CN206361072 U CN 206361072U
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- rotary shaft
- annular seal
- seal space
- near field
- flow liquid
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- 239000007788 liquid Substances 0.000 claims abstract description 46
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 238000002955 isolation Methods 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 6
- 238000013016 damping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Abstract
A kind of magnetorheological actuator acted on based on ultrasonic near field, it includes rotary shaft（18）, left shell（4）, right shell body（9）And outside framework oil seal（16）, rotary shaft（18）One end be passed through left shell（4）In outside framework oil seal（16）After stretch out left shell（4）Outside, rotary shaft（16）The other end be located at by left shell（4）And right shell body（9）In the annular seal space of composition, magnet exciting coil is arranged in annular seal space（10）, magnet exciting coil（10）Pass through magnetic shield cylinder（11）Realized and the magnetic flow liquid in annular seal space with annular seal space（15）Isolation, it is characterized in that described rotary shaft（18）Brake puck is installed on one end in annular seal space（14）, in right shell body（9）Disk stator is installed in the one side in annular seal space（13）, disk stator（13）On piezoelectric ceramics is installed（12）.The utility model has expanded the damp adjustable range of magnetorheological actuator, and fast response time, the rotating speed continuously adjustabe of rotary shaft, it is easy to control.
Description
Technical field
The utility model is related to a kind of bidirectional damper adjusting means, particularly a kind of based on the magnetorheological of ultrasonic near field effect
Actuator.
Background technology
Magnetic flow liquid is a kind of novel intelligent material, due to having excellent magnetic rheology effect, response speed in magnetic field
It hurry up, have the application of maturation in speed control field, stepless time adjustment can be realized, control performance is good, and magnetic flow liquid can be with
Reversible efficient change, response speed grade between fluid and solid.Although can be with for the rotary shaft that rotates freely of high speed
By applying different magnetic field intensities to magnetic flow liquid, realize that rotary shaft any time controls at any angle, but at a high speed certainly
By the rotary shaft that rotates without control when, because magnetic flow liquid is removed behind magnetic field, magnetic flow liquid shows as Newtonian fluid state, and has
Certain null field viscosity, produces certain null field to brake puck and damps square, it will hinder the high speed of rotary shaft to rotate freely.Such as
The structure of one regulation magnetic flow liquid null field damping of design among really magnetorheological actuator, it becomes possible to high when realizing rotary shaft without control
Speed is freely rotatable.
Utility model content
The purpose of this utility model be existing magnetic flow liquid actuator rotary shaft without control when damping force is larger can not
The problem of normal work, a kind of magnetic flow liquid actuator acted on based on ultrasonic near field of matching is designed, passes through ultrasonic near field work
Work part and magnetorheological working portion are combined to realize freely rotating and control at any angle at a high speed for rotary shaft, whole to make
Dynamic device fast response time, it is easy to control, simple and compact for structure, velocity variations continuously adjustabe, expands the damping regulation of magnetic flow liquid
Scope
The technical solution of the utility model is：
A kind of magnetorheological actuator acted on based on ultrasonic near field, it includes rotary shaft 18, left shell 4, right shell body 9 and bone
Frame oil sealing 16, one end of rotary shaft 18, which is passed through after the outside framework oil seal 16 in left shell 4, to be stretched out outside left shell 4, rotary shaft
16 other end is located in the annular seal space being made up of left shell 4 and right shell body 9, and magnet exciting coil 10, excitation are arranged in annular seal space
Coil 10 is realized by magnetic shield cylinder 11 with annular seal space isolates with magnetic flow liquid 15 in annular seal space, it is characterized in that described turn
Brake puck 14 is installed on one end that moving axis 18 is located in annular seal space, is located in right shell body 9 in the one side in annular seal space and installs
Have and piezoelectric ceramics 12 is installed on disk stator 13, disk stator 13.
Described disk stator 13 and piezoelectric ceramics 12 is pasted together first, and disk stator 13 passes through screw thread and right shell body
9 link together.
Left bearing 3 is installed at the endoporus step of described left shell 4, and clamp nut 1 and spacing be fixed on of pad 2 turn
On moving axis 18；The right bearing 17 of support rotating shaft is installed at the shaft shoulder and the endoporus step of left shell 4 of rotary shaft 18.
Described outside framework oil seal is fixed by the shaft shoulder of rotary shaft 18 and the step of left shell 4；The He of brake puck 14
Rotary shaft 18 is connected through a screw thread, and rotary shaft 18 is turned left through outside framework oil seal 16, right bearing 17 and left bearing 3 by the right side, and is passed through
The compress gasket 2 of clamp nut 1 realizes the fixation of rotary shaft 18.
Described magnet exciting coil 10 and magnetic shield cylinder 11 are arranged on the fixed position in left and right housing by sealing ring 6, lead to
Cross bolt 7 and nut 8 locks whole actuator.
Through hole of the left shell provided with injection magnetic flow liquid 15, after magnetic flow liquid fills cavity, with sealing screw 5
Through hole is sealed.
The beneficial effects of the utility model are：
Ultrasonic near field working portion and magnetorheological working portion are combined to realize the freedom of rotary shaft by the utility model
Rotate and control at any angle at a high speed, whole actuator fast response time, it is easy to control, simple and compact for structure, velocity variations
Continuously adjustabe, extends the damp adjustable range of magnetic flow liquid.
Brief description of the drawings
Fig. 1 is operation principle schematic diagram of the present utility model.
Fig. 2 is the overall structure diagram of actuator of the present utility model.
Fig. 3 is the overall structure graphics of actuator of the present utility model.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Embodiment one.
As Figure 1-3.
It is a kind of to reduce the method that magnetic flow liquid actuator null field damps square, it is characterized in that being installed additional in the side of disk stator 13
Piezoelectric ceramics 12, when the rotary shaft that rotates freely of high speed is without control, makes piezoelectric ceramics be powered, excite disk stator produce one and
The ultrasonic travelling wave of rotary shaft rotating Vortex, so as to produce the driving moment of one and rotary shaft rotating Vortex, reduces magnetic flow liquid
To the damping square of brake puck in the case of null field, realize that rotary shaft is freely rotatable at a high speed.As shown in Fig. 2 the utility model is sharp
Different magnetic field intensities are produced with size of current difference is applied to magnet exciting coil, the shear stress change that magnetic flow liquid is produced is right
Brake puck produces different braking moments, realizes that the rotary shaft 17 rotated freely to high speed is controlled at any angle in space.
The utility model excites the ultrasonic travelling wave of disk stator 13 using piezoelectric ceramics 12, produces magnetic flow liquid 15 and brake puck is surpassed
Sound antifriction function and tangential sound viscous force, apply certain antifriction function and driving moment to brake puck 14, adjust magnetic flow liquid
The moment of resistance of 15 pairs of brake pucks in the case of null field.Whole actuator of the present utility model has ultrasonic field portion and magnetorheological
Working portion is constituted, and rotary shaft can at any angle be controlled by applying different magnetic field intensities realizations to magnetic flow liquid；It is high
When the rotary shaft that speed is rotated freely is without control, the ultrasonic travelling wave of disk stator and rotary shaft rotating Vortex is excited, so as to produce rotation
To the damping square of brake puck in the case of the driving moment of axle rotating Vortex, reduction magnetic flow liquid null field, realize rotary shaft at a high speed
It is freely rotatable, as shown in Figure 1.
Embodiment two.
As Figure 1-3.
A kind of magnetic flow liquid actuator acted on based on ultrasonic near field, its three-dimensional contour structures are as shown in figure 3, it includes pressure
Tight nut 1, pad 2, left bearing 3, left shell 4, sealing screw 5, sealing ring 6, bolt 7, nut 8, right shell body 9, magnet exciting coil
10th, magnetic shield cylinder 11, piezoelectric ceramics 12, disk stator 13, brake puck 14, magnetic flow liquid 15, outside framework oil seal 16, right bearing
17th, rotary shaft 18, as shown in Fig. 2 disk stator 13 and piezoelectric ceramics 12 are pasted together first, disk stator 13 passes through screw thread
Linked together with right shell body 9, by applying certain voltage to piezoelectric ceramics, excite the ultrasonic travelling wave of disk stator, pass through
Ultrasonic friction reducing effect and tangential sound viscous force of the magnetic flow liquid to brake puck 14 are produced, certain antifriction is produced to brake puck
To the moment of resistance of brake puck in the case of effect and driving moment, regulation magnetic flow liquid null field；Left bearing 3 passes through left shell 4
Endoporus step and clamp nut 1 are pressed on pad 2 and fixed, the shaft shoulder and left shell that right bearing 17 passes through rotary shaft 18
4 endoporus steps are fixed, and can realize that the high-speed smooth of rotary shaft 18 is run by installing two bearings；Outside framework oil seal leads to
The step of the shaft shoulder and left shell 4 of crossing rotary shaft 18 is fixed, and can effectively be realized to magnetic flow liquid using outside framework oil seal 16
The sealing of 15 solid-states and liquid, and outside framework oil seal is applied to the sealing of rotation class rotary shaft；Brake puck 14 and rotary shaft 18
It is connected through a screw thread, rotary shaft 18 is turned left through outside framework oil seal 16, right bearing 18 and left bearing 3 by the right side, and passes through clamp nut 1
Compress gasket 2 realizes the axial restraint of rotary shaft 18, while realizing the axial restraint of brake puck 14；By magnet exciting coil 10, every
Magnetic sleeve 11 and sealing ring 6 are arranged on the relevant position in housing, and whole actuator is locked by bolt 7 and nut 8, by every
The magnetic line of force that magnetic sleeve can produce magnet exciting coil is as much as possible through magnetic flow liquid, and that improves magnetic flow liquid 15 utilizes effect
Rate, realizes the sealing of magnetic flow liquid using the one side of sealing ring 6 in addition, on the other hand realizes the exhausted of magnet exciting coil and magnetic flow liquid
Edge；Magnetic flow liquid 15 is injected by injection orifice, fills after the working clearance in housing, is sealed with sealing screw 5.
Operation principle of the present utility model is：As shown in figure 1, when the rotary shaft rotated freely at a high speed first is without control, ultrasound
Field portion starts effect, applies the voltage of specific frequency to piezoelectric ceramics, excites the ultrasonic vibration of disk stator, pass through piezoelectricity
The reasonable Arrangement of ceramics, motivates the ultrasonic travelling wave with the disk stator of rotary shaft rotating Vortex so that magnetic flow liquid is to braking
Disk produces certain ultrasonic suspending force and tangential sound viscous force, and one side ultrasonic suspending force causes the magnetic in magnetic flow liquid
Grain is more evenly distributed among the base fluid of magnetic flow liquid, improves the utilization ratio of magnetic flow liquid；On the other hand to rotary shaft
Produce certain homodromous driving moment, it is possible to reduce magnetic flow liquid is realized and turned to the null field damping torque of rotary shaft
The high speed of moving axis is rotated freely.When needing the rotary shaft realization to high speed rotation to control at any angle, piezoelectric ceramics is removed
Application voltage, ultrasonic field portion is stopped, due to the effect in ultrasonic near field so that the magnetic-particle in magnetic flow liquid is more
Plus be evenly distributed among the base fluid of magnetic flow liquid, now apply certain electric current to magnet exciting coil, what magnet exciting coil was produced
The magnetic line of force passes through magnetic flow liquid, and the magnetic-particle in magnetic flow liquid makes quick response after being magnetized, and along magnetic line of force side
To in chainlike distribution, and with the increase of magnetic field intensity, solid-state and semi-solid state is presented in magnetic flow liquid, and one is produced to brake puck
Fixed braking moment, is controlled rotary shaft at any angle so as to realize；After the electric current of magnet exciting coil is removed, magnetic flow liquid is extensive
Multiple Newtonian fluid state, applies the voltage of specific frequency to piezoelectric ceramics, and ultrasonic near field effect, rotary shaft is recovered freely to revolve at a high speed
Turn.Whole process realizes the accurate control that axle is rotated freely to high speed.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, some improvement can also be made on the premise of the utility model principle is not departed from, these improvement also should be regarded as
Protection domain of the present utility model.
It is same as the prior art or can be realized using prior art that the utility model is not directed to part.
Claims (6)
1. a kind of magnetorheological actuator acted on based on ultrasonic near field, it includes rotary shaft（18）, left shell（4）, right shell body（9）
And outside framework oil seal（16）, rotary shaft（18）One end be passed through left shell（4）In outside framework oil seal（16）After stretch out left housing
Body（4）Outside, rotary shaft（18）The other end be located at by left shell（4）And right shell body（9）In the annular seal space of composition, pacify in annular seal space
Mounted in magnet exciting coil（10）, magnet exciting coil（10）Pass through magnetic shield cylinder（11）Realized and the magnetic flow liquid in annular seal space with annular seal space
（15）Isolation, it is characterized in that described rotary shaft（18）Brake puck is installed on one end in annular seal space（14）,
Right shell body（9）Disk stator is installed in the one side in annular seal space（13）, disk stator（13）On piezoelectric ceramics is installed
（12）.
2. the magnetorheological actuator according to claim 1 acted on based on ultrasonic near field, it is characterized in that described disk is determined
Son（13）And piezoelectric ceramics（12）It is pasted together first, disk stator（13）Pass through screw thread and right shell body（9）Link together.
3. the magnetorheological actuator according to claim 1 acted on based on ultrasonic near field, it is characterized in that described left shell
（4）Endoporus step at left bearing is installed（3）, and clamp nut（1）And pad（2）It is spacing to be fixed on rotary shaft（18）On；
Rotary shaft（18）The shaft shoulder and left shell（4）The right bearing of support rotating shaft is installed at endoporus step（17）.
4. the magnetorheological actuator according to claim 1 acted on based on ultrasonic near field, it is characterized in that described skeleton oil
Envelope passes through rotary shaft（18）The shaft shoulder and left shell（4）Step be fixed；Brake puck（14）And rotary shaft（18）Pass through
Threaded connection, rotary shaft（18）Turned left by the right side through outside framework oil seal（16）, right bearing（17）And left bearing（3）, and by compressing
Nut（1）Compress gasket（2）Realize rotary shaft（18）Fixation.
5. the magnetorheological actuator according to claim 1 acted on based on ultrasonic near field, it is characterized in that described excitation wire
Circle（10）With magnetic shield cylinder（11）Pass through sealing ring（6）Fixed position in left and right housing, passes through bolt（7）And spiral shell
It is female（8）Lock whole actuator.
6. the magnetorheological actuator according to claim 1 acted on based on ultrasonic near field, it is characterized in that on the left shell
Provided with injection magnetic flow liquid（15）Through hole, after magnetic flow liquid fills cavity, use sealing screw（5）Through hole is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720019384.0U CN206361072U (en) | 2017-01-09 | 2017-01-09 | The magnetorheological actuator acted on based on ultrasonic near field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720019384.0U CN206361072U (en) | 2017-01-09 | 2017-01-09 | The magnetorheological actuator acted on based on ultrasonic near field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206361072U true CN206361072U (en) | 2017-07-28 |
Family
ID=59380372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720019384.0U Withdrawn - After Issue CN206361072U (en) | 2017-01-09 | 2017-01-09 | The magnetorheological actuator acted on based on ultrasonic near field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206361072U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641082A (en) * | 2017-01-09 | 2017-05-10 | 南京航空航天大学 | Magnetorheological fluid actuator and method for reducing zero field damping torque of magnetorheological fluid actuator |
| CN111207159A (en) * | 2020-03-20 | 2020-05-29 | 中国矿业大学 | Novel magnetorheological suspensions clutch |
-
2017
- 2017-01-09 CN CN201720019384.0U patent/CN206361072U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641082A (en) * | 2017-01-09 | 2017-05-10 | 南京航空航天大学 | Magnetorheological fluid actuator and method for reducing zero field damping torque of magnetorheological fluid actuator |
| CN106641082B (en) * | 2017-01-09 | 2018-07-31 | 南京航空航天大学 | Reduce the method and its actuator of magnetorheological fluid actuator null field damping square |
| CN111207159A (en) * | 2020-03-20 | 2020-05-29 | 中国矿业大学 | Novel magnetorheological suspensions clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170728 Effective date of abandoning: 20180731 |
|
| AV01 | Patent right actively abandoned |