CN202052684U - Force-control type electromagnet and permanent magnet compound excitation vibration table - Google Patents
Force-control type electromagnet and permanent magnet compound excitation vibration table Download PDFInfo
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- CN202052684U CN202052684U CN2011200296318U CN201120029631U CN202052684U CN 202052684 U CN202052684 U CN 202052684U CN 2011200296318 U CN2011200296318 U CN 2011200296318U CN 201120029631 U CN201120029631 U CN 201120029631U CN 202052684 U CN202052684 U CN 202052684U
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Abstract
Provided is a force-control type electromagnet and permanent magnet compound excitation vibration table, belonging to the technical field of electromagnetic driving devices. The vibration table provided includes a casing, solenoids, magnetic energy bodies and an object carrying mechanism, the two magnetic energy bodies are respectively arranged from up to down in the casing through the manner of horizontal rotating shafts and are contacted to each other, the two solenoids are respectively arranged in the casing and at the two sides of the magnetic energy bodies, the object carrying mechanism is movably arranged at the top of the casing and is contacted with one of the magnetic energy bodies. The vibration table provided realizes that the rigid magnetic energy bodies are excited by the electromagnet to generate direct displacement driving, and the vibration table provided, which is a vibration device or apparatus being broad in band, heavy in load and large in displacement, also has the advantages of simple structure, high reliability and driving efficiency, being free of the hidden trouble of the random dragging of moving-coils and leads, accurate and controllable amplitude, and being capable of realizing the vibration driving under 5Hz, namely from a quasi-static state to a high frequency state.
Description
Technical field
The utility model relates to a kind of device of electromagnetic driver technical field, specifically is the electromagnetic permanent magnet combined excited vibration platform of a kind of power control type.
Background technology
In the last few years, because the needs of vibration-testing under the work condition environment of space flight, aviation, navigation field ROV or precision equipment, the demand of high-performance vibration-testing equipment was more and more urgent.At present vibratory equipment mainly contains hydraulic pressure, pneumatic, electromagnetism and mechanical vibration equipment several types.Wherein hydraulic pressure, pneumatic and mechanical vibratory equipment drive controlling unit and how can not be fit to field vibration-testing performance demands such as space flight because attainable driving frequency is low.Electromagnetic Drive is owing to adopt electromagnetic signal control, the realization that drives realizes by the electromagnetic energy effect, control is convenient, response is sensitive, is particularly suitable for realizing the realization of dither equipment, and the most driving links of Electromagnetic Drive that adopt of therefore present high-performance vibratory equipment realize.As the electromagnetic vibration generator system of Britain Ling company, its device drives operation principle is based on the voice coil motor drive principle, and drive coil drives a mover that is suspended in drive coil central authorities as stator by alternating electromagnetic force usually, produces vibration.Yet, also there is obvious defects in this class Electromagnetic Drive shake table, mainly be because mover is in the suspension duty all the time, the following vibratory drive of 5Hz is difficult to realize, in the driving process because this suspension drives the moving rigidity deficiency that makes in the driving process, its high-frequency drive displacement is less in addition, the driving amplitude inaccuracy, and it is bigger to drive energy consumption.
Find through retrieval prior art, China Patent No. ZL200820087256.0 applying date 2008-5-16, put down in writing a kind of " a kind of electromagnetic vibration generator system ", this technology comprises stage body, stage body comprises first magnet, first transition block, center conducting magnetic column, second transition block, second magnet, is arranged with moving-coil on the conducting magnetic column of center; Also comprise motion platform and two frame shape air-float guide rails, the motion platform is located in the air-float guide rail slidably; Also comprise drive motors, the screw mandrel that is attached thereto, screw mandrel is connected with a planker, and lead-in wire and tracheae all are connected with planker; The grating chi also is installed on the air-float guide rail, the communication block that also is provided with the grating reading head relative on the motion platform and is connected with grating reading head with the grating chi, communication block is connected with a controller, and drive motors is connected with controller signals.This patent advantage has been to provide a kind of electromagnetic vibration generator system with complete ancillary equipment, be synchronized with the movement by controller control motor-driven screw mandrel traction planker accompany movement platform, the additional force that makes air inlet pipe and connect electrical lead does not influence the distortion factor of big stroke of shake table and low frequency waveform.
But the prior art is to realize by the voice coil motor drive form of " being provided with moving-coil ", and the driving transmission links such as screw mandrel that need drive motors, are attached thereto.Like this, the vibratory equipment that drives based on moving-coil at first exists the difficult 5Hz that maybe can't realize with interior low frequency driving, and parts and link that its driving relates to are many, also need motor and leading screw screw body to be synchronized with the movement in the driving by control traction planker accompany movement platform, and have air inlet pipe and connect involving and side effect such as additional force of electrical lead, make whole platform can not realize directly driving efficiently and high reliability drives.
The utility model content
The utility model is at the prior art above shortcomings, provide a kind of power control type electromagnetic permanent magnet combined excited vibration platform, utilize the magnetic energy body of direction abnormity under electricity, magnetic pumping effect, to produce magnetic pole deflection and make the magnetic energy body of direction abnormity in the process that its length direction changes, produce the effect that the mechanism that is in contact with it is produced the direct promotion of rigidity, and produce the big effect that drives.This device realizes that a kind of simple in structure, the reliability and driving efficient height, no moving-coil and the lead servo-actuated that produce direct displacement drive by electromagnetic excitation rigidity magnetic energy body involve hidden danger, amplitude is accurately controlled, can realize below 5Hz, i.e. wideband from the quasistatic to the high frequency, heavy load, big displacement vibrating device or equipment.
The utility model is achieved through the following technical solutions, the utility model comprises: housing, solenoid, magnetic energy body and loading mechanism, wherein: two magnetic energy bodies respectively with horizontal rotating shaft mode upper and lower settings in enclosure interior and be in contact with one another, solenoid is arranged at enclosure interior and over against the second magnetic energy body, loading mechanism is movably set in the top of housing and contacts with a magnetic energy body.
Described housing comprises: the outer framework of base, rotating shaft support frame, magnetic circuit internal frame body and fuselage, wherein: the outer framework of fuselage is fixedlyed connected with base, and rotating shaft support frame and magnetic circuit internal frame body are respectively with being arranged in the outer framework of fuselage surely and being positioned at the inside and outside of solenoid.
Described magnetic energy body is by being movably set in enclosure interior and forming with loading mechanism and the contacted first magnetic energy body of the second magnetic energy body and the second magnetic energy body that is fixedly set in enclosure interior below respectively, wherein: the first magnetic energy body is a cylindrical structural, and the second magnetic energy body is the direction polymorphic structure.
Described first time is provided with the Flexible Reset body between magnetic energy body and the enclosure interior.
Described solenoid is one or more os, specifically is positioned at housing and is arranged at the outside of the second magnetic energy body.
Described loading mechanism comprises: the objective table that from top to bottom is fixedly connected sequentially, structure sensor, displacement output panel and the displacement output body of rod, wherein: the displacement output body of rod contacts with the magnetic energy body with housing flexible connection and its lower end.
Described loading mechanism is provided with the axis of guide, and this axis of guide specifically is positioned at the lower surface of displacement output panel and flexibly connects with housing, realizes guiding.
The utility model shake table initialization state, before not feeding the electromagnetic excitation signal, by the effect of elasticity recovery body, the magnetic energy body by the time complex elasticity body pressure constraint in the horizontal direction, this moment, magnetic pole was on the horizontal direction.During work, solenoid is switched on, because the electromagnetic field direction is vertical with initial magnetic energy body pole orientation, when electromagnetic field intensity is enough, magnetic pole deflection will take place in the magnetic energy body, along with the length direction of magnetic pole deflection magnetic energy body also changes to vertical direction from horizontal direction, the magnetic energy body is to vertical direction deflection, thereby when overcoming the elasticity recovery restraining force, head on and push the displacement output body of rod when countershaft holds rotation and move up, and then push displacement output panel and the final driving objective table of structure sensor and its test specimen of going up placement and move up.The distance that should move is directly proportional with electromagnetic field intensity or impressed current intensity, can be by applying the corresponding control of electric current, maximum displacement be direction abnormity magnetic energy body center to the distance on summit, pole orientation upper end with to the direction upper end summit vertical with pole orientation apart from difference.After the displacement output body of rod is by jack-up, cut off electric current or apply reversing the current, the magnetic energy body will be under the recovery pressure effect of elasticity recovery body so, or elasticity recovery body recovery pressure and oppositely the electromagnetic force force action issue commentaries on classics until horizontal level, fall when the displacement output body of rod and then objective table and the meeting of the test block on it like this.Like this, this new device can be along with applying forward and reverse variable-current in the solenoid, the process that the test block realization on the objective table once pumps with add electric current or outage to solenoid.Based on this, repeat the switching electric current or feed alternating current to coil, this novel vibrating platform will be realized vibration processes up and down reciprocatingly so.The amplitude of this vibration and vibration frequency all can be done corresponding control by the power and the frequency that apply current signal.
Shake table of the present utility model, between objective table and displacement output panel, be provided with pressure structure sensor with enough bonding strengths, when objective table push to test part lifting meeting pulled back, thrust and pulling force that displacement output panel is delivered on the test block can be by the real-time sensings of structure sensor equivalent.So, shake table of the present utility model not only can be realized the shake table effect, and be applied to the driving force on the test block in this vibration processes and drive acceleration or drive flat rate and can be detected in real time, thereby the final electromagnetic permanent magnet combined excited vibration platform of realizable force control type.
The utility model relates to the electromagnetic permanent magnet combined excited vibration of a kind of power control type system, is made up of with linear array formula, flat and array or 3 D stereo array and in parallel or its solenoid of connecting the electromagnetic permanent magnet combined excited vibration platform of above-mentioned several power control types.This system can be used for simulation realize to as bridge etc. large-scale anti-vibration, the work of anti-external applied load experiment test of grow " length " facility arranged, be used to simulate realization and the anti-vibration as influences such as road surface, wave, earthquakes of the vehicles, building, anti-external applied load experiment test studied or be used to simulate realization the external force resistance under external applied load impact, vibration and the power effect of the vehicles, building three-dimensional, anti-vibration, anti-external applied load experiment test are studied.
Compared with prior art, the utlity model has following advantage:
1. realized based on the direct vibratory drive under electromagnetism and the effect of magnetic energy bluk recombination magnetic energy, driven the efficient height, energy-conservation;
2, oscillating movement drives directly, and mechanism is simple, good rigidly, good reliability;
3, drive vibration frequency and can apply signal of telecommunication control by the outside fully, can realize that quasistatic arrives the wideband vibration of high frequency;
4, realize that easily large amplitude drives; Also realize small amplitude easily; Vibration displacement is accurately controlled;
5. flexible stress, strain size and precision can be by accurately applying magnetic field or current's intensity is controlled, and control is simple, convenient;
6, have structure sensing link, be applied to driving force on the measured piece, acceleration, displacement etc. in the vibratory drive process and can be implemented monitoring or convert and obtain, thus the convenient closed-loop control that realizes vibration-testing.
Description of drawings
Fig. 1 is the utility model structural representation;
Wherein: (a) being the pressure-less state schematic diagram, (b) is the pressure state schematic diagram.
Fig. 2 is the electromagnetic permanent magnet combined excited vibration system schematic of embodiment power control type;
Wherein: (a) being linear array, (b) is planar array, (c) is solid array.
The specific embodiment
Below embodiment of the present utility model is elaborated; present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: housing 1, solenoid 2, magnetic energy body 3,4 and loading mechanism 5, wherein: two magnetic energy bodies 3,4 are inner and be in contact with one another in housing 1 with horizontal rotating shaft mode upper and lower settings respectively, solenoid 2 is positioned at enclosure interior and over against the second magnetic energy body 4, loading mechanism 5 is movably set in the top of housing 1 and contacts with a magnetic energy body.
Described housing 1 comprises: the outer framework 9 of base 6, rotating shaft support frame 7, magnetic circuit internal frame body 8 and fuselage, wherein: the outer framework 9 of fuselage is fixedlyed connected with base 6, and rotating shaft support frame 7 and magnetic circuit internal frame body 8 are fixedly set in the outer framework 9 of fuselage respectively and are positioned at the inside and outside of solenoid 2.
Described magnetic energy body is inner and form with loading mechanism 5 and the second magnetic energy body, the 4 contacted first magnetic energy bodies 3 and the second magnetic energy body 4 that is fixedly set in housing 1 inner below respectively by being movably set in housing 1, wherein: the first magnetic energy body 3 is a cylindrical structural, and the second magnetic energy body 4 is oval column type structure.
Described first time is provided with back-moving spring 11 between magnetic energy body 3 and housing 1 inside.
Described solenoid 2 is one or more os, specifically be positioned at housing and be arranged at the outside of the second magnetic energy body 4, heart position then is placed in one magnetic energy body 4 when solenoid 2 is an o: the outside that then evenly is arranged at the second magnetic energy body 4 when solenoid 2 is two above os.
Described loading mechanism 5 comprises: the objective table 12 that from top to bottom is fixedly connected sequentially, structure sensor 13, displacement output panel 14 and the displacement output body of rod 15, wherein: the displacement output body of rod 15 contacts with the magnetic energy body with housing 1 flexible connection and its lower end.
Be provided with linear bearing 16 between described displacement take-off lever and the housing 1.
Described structure sensor 13 is a piezoelectric force transducer.
Described loading mechanism 5 is provided with the axis of guide 17, and this axis of guide 17 specifically is positioned at the lower surface of displacement output panel 14 and flexibly connects with housing 1, realizes guiding.
Be provided with linear bearing 16 between the described axis of guide 17 and the housing 1.
This device initialization state, before not feeding the electromagnetic excitation signal, by the Flexible Reset body is back-moving spring 11 effect, the magnetic energy body be permanent magnet and outsourcing base 6 thereof be reset elastomer be the constraint of back-moving spring 11 pressure in the horizontal direction, this moment, permanent magnet pole was on the horizontal direction.During work, to solenoid 2 energisings, because the electromagnetic field direction of its generation is vertical with initial permanent magnet magnetic extreme direction, when electromagnetic field intensity is enough, magnetic pole deflection will take place in permanent magnet, along with the length direction of magnetic pole deflection permanent magnet also changes to vertical direction from horizontal direction, permanent magnet is to vertical direction deflection, thereby when overcoming back-moving spring 11 restraining forces, heading on countershaft forwards and pushes the displacement output body of rod 15 moving the time and move up, and then push displacement output panel 14 and structure sensor 13 final driving objective tables 12 and its test specimen of going up placement moves up, shown in the figure dotted line.
The distance that should move is directly proportional with electromagnetic field intensity or impressed current intensity, can be by applying the corresponding control of electric current, maximum displacement be the second magnetic energy body be the direction abnormity elliptical cylinder-shape permanent magnet center to the distance on summit, pole orientation upper end and summit, end on the direction vertical with pole orientation apart from difference.After the displacement output body of rod 15 is by jack-up, cut off electric current or apply reversing the current, permanent magnet will be under the recovery pressure effect of back-moving spring 11 so, or the recovery pressure of back-moving spring 11 and oppositely the electromagnetic force force action issue commentaries on classics until horizontal level, the displacement output body of rod 15 and then objective table 12 can fall after rise with test block on it like this.In the whole driving process, the mobile all by the linear bearing 16 that is arranged on the outer framework 9 of fuselage of moving of the body of rod 15 and displacement output panel 14 exported in displacement, and the axis of guide 17 and linear bearing 16 guiding, causes the driving oscillating movement more steady.In addition, the axis of guide 17 outsides between displacement output panel 14 and fuselage housing support body upper end cover are enclosed with rubber elastomer 18, this side and the impact of 15 pairs of permanent magnets of the displacement output body of rod can play buffering and fall during objective table 12 time, another the convenient ability that can share the tested load of the displacement output body of rod 15 carryings makes the displacement output body of rod 15 can drive the test block of bigger quality.In addition, in the shake table course of work, but the phase transformation class cooling mediums 10 such as gap filling paraffin in fuselage housing support body and magnetic circuit internal frame body 8, to stop solenoid 2 heatings.
Like this, according to above explanation, this device can be along with applying forward and reverse variable-current in the solenoid 2, the process that the test block realization on the objective table 12 once pumps with adding electric current or outage for solenoid 2.Based on this, repeat switching electric current or feeding alternating current for solenoid 2, this device will be realized vibration processes up and down reciprocatingly so.The amplitude of this vibration and vibration frequency all can be done corresponding control by the power and the frequency that apply current signal.
Simultaneously, the shake table of this device, between objective table 12 and displacement output panel 14, be provided with pressure structure sensor 13 and be piezoelectric force transducer with enough bonding strengths, when objective table 12 push to test part lifting meetings pulled back, thrust and pulling force that displacement output panel 14 is delivered on the test block can be by the real-time sensings of pressure sensor equivalent.So, the shake table of this device not only can be realized the shake table effect, and be applied to the driving force on the test block in this vibration processes and drive acceleration or driving frequency can be detected or obtain by conversion in real time, thereby the final electromagnetic permanent magnet combined excited vibration platform of realizable force control type.
As shown in Figure 2, present embodiment passes through the electromagnetic permanent magnet combined excited vibration platform 19 of above-mentioned several power control types with the linear array formula, planar array formula or 3 D stereo array are arranged, encourage corresponding driven member or driven member array 20, and independent respectively control or and or its solenoid of connecting form the electromagnetic permanent magnet combined excited vibration of corresponding force control type system, this system can be used for simulation and realizes as bridge etc. is large-scale the anti-vibration of growing " length " facility being arranged, anti-external applied load experiment test work, being used for simulation realizes the vehicles, building as road surface, wave, the anti-vibration of influence such as earthquake, anti-external applied load experiment test is studied or is used for simulation and realizes the vehicles, the external applied load of building three-dimensional is impacted, external force resistance under vibration and the power effect, anti-vibration, anti-external applied load experiment test research.
Claims (10)
1. electromagnetic permanent magnet combined excited vibration platform of power control type, comprise: housing, solenoid, magnetic energy body and loading mechanism, it is characterized in that: two magnetic energy bodies respectively with horizontal rotating shaft mode upper and lower settings in enclosure interior and be in contact with one another, solenoid is positioned at enclosure interior and over against the second magnetic energy body, loading mechanism is movably set in the top of housing and contacts with a magnetic energy body.
2. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 1, it is characterized in that, described housing comprises: the outer framework of base, rotating shaft support frame, magnetic circuit internal frame body and fuselage, wherein: the outer framework of fuselage is fixedlyed connected with base, and rotating shaft support frame and magnetic circuit internal frame body are fixedly set in the outer framework of fuselage respectively and are positioned at the inside and outside of solenoid.
3. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 1, it is characterized in that, described magnetic energy body is by being movably set in enclosure interior and forming with loading mechanism and the contacted first magnetic energy body of the second magnetic energy body and with the second magnetic energy body that is arranged at the enclosure interior below surely respectively, wherein: the first magnetic energy body is a cylindrical structural, and the second magnetic energy body is the direction polymorphic structure.
4. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 3 is characterized in that, described first time is provided with the Flexible Reset parts between magnetic energy body and the enclosure interior.
5. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 1 and 2 is characterized in that described solenoid is one or more os, specifically is positioned at housing and is arranged at the outside of the second magnetic energy body.
6. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 1 is characterized in that, described loading mechanism comprises; The objective table that from top to bottom is fixedly connected sequentially, structure sensor, displacement output panel and the displacement output body of rod, wherein: the displacement output body of rod flexibly connects with housing and its lower end contacts with the magnetic energy body.
7. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 1 is characterized in that, is provided with linear bearing between described displacement take-off lever and the housing.
8. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 1 is characterized in that, described loading mechanism is provided with the axis of guide, and this axis of guide specifically is positioned at the lower surface of displacement output panel and flexibly connects with housing, realizes guiding.
9. the electromagnetic permanent magnet combined excited vibration platform of power control type according to claim 1 is characterized in that, is provided with linear bearing between the described axis of guide and the housing.
10. the electromagnetic permanent magnet combined excited vibration of power control type system is characterized in that being arranged with linear array formula, planar array formula or 3 D stereo array and in parallel or its solenoid of connecting is formed by the electromagnetic permanent magnet combined excited vibration platform of several the above-mentioned described power control of arbitrary claim types.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200296318U CN202052684U (en) | 2011-01-28 | 2011-01-28 | Force-control type electromagnet and permanent magnet compound excitation vibration table |
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| CN2011200296318U CN202052684U (en) | 2011-01-28 | 2011-01-28 | Force-control type electromagnet and permanent magnet compound excitation vibration table |
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| CN102205308A (en) * | 2011-01-28 | 2011-10-05 | 上海交通大学 | Force-controlled electromagnetic permanent magnetic composite excitation vibration platform |
| CN102716851A (en) * | 2012-06-06 | 2012-10-10 | 西安交通大学 | Electric vibrating platform with controllable inertia force, damping force and elastic force |
| CN104849007A (en) * | 2015-05-08 | 2015-08-19 | 哈尔滨工业大学 | Four-magnetic-circuit symmetric excitation rectangular open magnetic field type electromagnetic vibration table magnetic circuit structure with magnetic field tracking compensation |
| CN104849008A (en) * | 2015-05-08 | 2015-08-19 | 哈尔滨工业大学 | Cylindrical closed magnetic field type low-frequency vibration calibration table with long permanent magnet tube radial excitation |
| CN104865029A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨工业大学 | Cylindrical enclosed magnetic-field-type electromagnetic shake table magnetic circuit structure centripetally excited by long permanent magnetism tube |
| CN104865031A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨工业大学 | Dual-permanent-magnetism-tube two-end symmetrically-excited cylindrical enclosed magnetic-field-type low-frequency vibration calibration bench capable of realizing eddy current compensation |
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| CN106197922A (en) * | 2016-07-12 | 2016-12-07 | 浙江海洋大学 | A kind of vertical vibration table with magnetic driving mechanism |
| CN106323576A (en) * | 2016-08-26 | 2017-01-11 | 浙江海洋大学 | Horizontal vibration table having magnetic force driving mechanism |
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- 2011-01-28 CN CN2011200296318U patent/CN202052684U/en not_active Expired - Lifetime
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| CN102205308A (en) * | 2011-01-28 | 2011-10-05 | 上海交通大学 | Force-controlled electromagnetic permanent magnetic composite excitation vibration platform |
| CN102716851A (en) * | 2012-06-06 | 2012-10-10 | 西安交通大学 | Electric vibrating platform with controllable inertia force, damping force and elastic force |
| CN102716851B (en) * | 2012-06-06 | 2014-07-23 | 西安交通大学 | Electric vibrating platform with controllable inertia force, damping force and elastic force |
| CN104849008B (en) * | 2015-05-08 | 2016-06-22 | 哈尔滨工业大学 | The cylindrical hermetic magnetic field type low-frequency vibration calibration console of the long centripetal excitation of permanent magnetism pipe |
| CN104849008A (en) * | 2015-05-08 | 2015-08-19 | 哈尔滨工业大学 | Cylindrical closed magnetic field type low-frequency vibration calibration table with long permanent magnet tube radial excitation |
| CN104865029A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨工业大学 | Cylindrical enclosed magnetic-field-type electromagnetic shake table magnetic circuit structure centripetally excited by long permanent magnetism tube |
| CN104865031A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨工业大学 | Dual-permanent-magnetism-tube two-end symmetrically-excited cylindrical enclosed magnetic-field-type low-frequency vibration calibration bench capable of realizing eddy current compensation |
| CN104865031B (en) * | 2015-05-08 | 2016-04-27 | 哈尔滨工业大学 | Two permanent magnetism pipe two ends symmetrical excitation cylindrical hermetic magnetic field type low-frequency vibration calibration console of eddy current compensation |
| CN104865029B (en) * | 2015-05-08 | 2016-06-08 | 哈尔滨工业大学 | The cylindrical hermetic magnetic field type electromagnetic vibration generator system magnetic structure of the long centripetal excitation of permanent magnetism pipe |
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| CN105614924A (en) * | 2016-01-25 | 2016-06-01 | 吴发南 | Melon pulp clearing machine |
| CN105686022A (en) * | 2016-01-25 | 2016-06-22 | 吴发南 | Pulp remover |
| CN105840705A (en) * | 2016-05-06 | 2016-08-10 | 上海交通大学 | Magnetic particle driven shock absorption system |
| CN105840705B (en) * | 2016-05-06 | 2018-10-23 | 上海交通大学 | Magnetic particle drives shock absorption system |
| CN105921392A (en) * | 2016-06-14 | 2016-09-07 | 上海交通大学 | Conjugate constant-diameter cam type composite magnetic energy reciprocating vibration platform and driving component and method |
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| CN106197922A (en) * | 2016-07-12 | 2016-12-07 | 浙江海洋大学 | A kind of vertical vibration table with magnetic driving mechanism |
| CN106197922B (en) * | 2016-07-12 | 2018-10-30 | 浙江海洋大学 | A kind of vertical vibration table with magnetic driving mechanism |
| CN106323576A (en) * | 2016-08-26 | 2017-01-11 | 浙江海洋大学 | Horizontal vibration table having magnetic force driving mechanism |
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| CN106824775A (en) * | 2017-02-07 | 2017-06-13 | 南京大树智能科技股份有限公司 | A kind of electromagnetic vibration sieves adjustable amplitude drive device |
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