CN1954904A - Drive device of orbital table and table using the drive device - Google Patents
Drive device of orbital table and table using the drive device Download PDFInfo
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- CN1954904A CN1954904A CN 200510114727 CN200510114727A CN1954904A CN 1954904 A CN1954904 A CN 1954904A CN 200510114727 CN200510114727 CN 200510114727 CN 200510114727 A CN200510114727 A CN 200510114727A CN 1954904 A CN1954904 A CN 1954904A
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- shaking table
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- drive unit
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Abstract
A driver for the on-track shaker is a full-function motor with large number of phases, which s composed of the motors with incomplete function and less number of phases and installed to the cranks of said shaker (one to one). Said motors are linked. A shaker with said driver is also disclosed.
Description
Technical field
The present invention relates to a kind of drive unit of track shaking table, the invention still further relates to the track shaking table that uses this drive unit.
Background technology
So-called track shaking table also claims oscillator, be widely used in the fields such as biology, medical science, food, chemical industry, hold burning on the upper surface that fixes on cage chair, that include various liquid bosom, test tube, culture dish or other container along a kind of path movement of track with uniform circumduction, play mixing or stir its content.Especially, the mode that the track shaking table moves cage chair is: in X-Y plane, all point all moves on a kind of circumferential path with common radius on the upper surface of cage chair, but on cage chair arbitrarily the on line of point-to-point transmission all keep translation all the time at the volley.Usually, burning bosom, test tube, culture dish or other container is attached on the upper surface that is fastened on the pallet on the cage chair, thereby be contained in wherein liquid around the inwall whirling of container or vibration, mix promoting, perhaps accelerate the exchange between interaction or accelerating liquid and the local gas environment.
Routinely, described shaking table mainly comprises a bearing, cage chair, pivot props up mechanism and drive unit, a described pivot prop up mechanism and is connected between cage chair and the bearing, comprises at least one crank.Described crank has a vertical upper shaft, a vertical lower end axle and a coupling part.The lower end axle connects on the bearing by bearing, and upper shaft is connected on the cage chair by bearing.The axis of lower end axle and the distance between the upper shaft are called the eccentric throw of crank.Under the drive of driving force, the axis of the upper shaft of crank will move circumferentially along the circle of its radius by the eccentric throw decision of crank, and whole pivot props up mechanism's prevention cage chair around any axis rotation, thereby all points of cage chair can both, and be merely able to move by the circumferential path of the eccentric throw of crank decision along having its radius.
Shaking table for example can also comprise the known device of those of ordinary skill in counterweight, pallet, jig, casing or the like field, equally neither target of the present invention, and therefore not explanation in this manual.
The drive unit of shaking table is the turning motor of an adjustable speed normally, and motor drives at least one crank by a belt drive unit.In the case, usually motor is fixedly mounted on the bearing in the below of crank.
Summary of the invention
Therefore target of the present invention is to propose a kind of track shaking table drive unit, uses the shaking table of this shaking table drive unit not need transmission device, does not need additional axle and the bearing or the hitch bar of conventional motor.
Another target of the present invention is to propose a kind of shaking table that comprises described shaking table drive unit.
Track shaking table drive unit of the present invention comprises a plurality of driven units, for example three driven units.A described driven unit comes down to the motor of a low number of phases, for example monophase machine.A driven unit, just the rotor of the motor of a low number of phases directly is fixedly mounted on the lower end axle of a crank, the stator of the motor of the described low number of phases and rotor are fixedly mounted on the bearing of shaking table with one heart, between adjacent rotor and corresponding crank upper shaft axis and the lower end axis difference of the angle of line and adjacent magnetic pole of the stator center line to each other angle and be the angle of rotor polar distance/total number of phases, described total number of phases is the summation of the number of phases of whole described a plurality of driven units, when for example adopting three single-phase driven units, described total number of phases is three.Here, also can be that rotor is identical with corresponding crank relative angular position, and adjacent magnetic pole of the stator center line to each other angle be the angle of rotor polar distance/total number of phases.Can also be rotor with the difference of the angle of the upper shaft of corresponding crank and the line between the axle of lower end be rotor polar distance/total number of phases, the magnetic pole of the stator center line be parallel to each other.Described driven unit in the field under the control of known electronic switch in turn the task driven shaking table finish continuous track gyration.
Preferably, described each driven unit is a switched reluctance motor, and single-phase switched reluctance motor preferably.Preferably the stator magnet number of poles of described switched reluctance motor is an even number and identical with the rotor magnetic pole number arbitrarily, and more preferably the stator magnet number of poles of described switched reluctance motor, rotor magnetic pole number are can not be by three even numbers of dividing exactly.
Because the synchronous interaction of crank relation is a plurality of, preferably, three driven units that are fixedly mounted on respectively on the axle of crank lower end, alternately drives each crank under the control of electronic switch, has formed total motor of a split type high number of phases.
Description of drawings
From understanding other features and advantages of the present invention further to explaining of embodiment of the present invention with reference to the accompanying drawings.In the accompanying drawings:
Fig. 1 is a schematic diagram, is used to illustrate a kind of operation principle of drive unit of track shaking table of prior art;
Fig. 2 is a decomposition diagram, and a kind of basic structure of a preferred implementing form of the drive unit according to track shaking table of the present invention is shown;
Fig. 3 a-3b is the stator of explanation embodiment shown in Figure 2 and the schematic diagram of rotor relative position relation, is used to illustrate the operation principle of the drive unit of track shaking table of the present invention;
Fig. 4 is the stator of another preferred implementation of driven unit of explanation track shaking table drive unit of the present invention and the schematic diagram of rotor relative position relation.
The specific embodiment
Referring to Fig. 1, the track shaking table of schematically illustrated a kind of prior art among the figure, comprise one be positioned at the bearing 1 of top, a cage chair 2 and a pivot of being made up of three cranks 3 that is positioned at the below props up mechanism.The plane of the plane of bearing 1 and cage chair 2 is parallel to each other.Described crank 3 has a vertical upper shaft 3a, a vertical lower end axle 3b and a coupling part 3c.Lower end axle 3b connects on the bearing by bearing, and upper end 3a axle is connected on the cage chair by bearing.The axis of lower end axle 3b and the distance between the upper shaft 3a are called the eccentric throw of crank 3.Under the drive of driving force, the axis of the upper shaft of crank will move circumferentially along the circle of its radius by the eccentric throw decision of crank 3, and whole pivot props up mechanism's prevention cage chair around any axis rotation, thereby all points of cage chair can both, and be merely able to move by the circumferential path of the eccentric throw of crank decision along having its radius.The bearing of one of lower end axle of three cranks 3 under passing stretches out from the below of bearing 1, accepts driving force by belt drive unit from the motor M of an adjustable speed.
Below with reference to the non-limiting preferred embodiment of Fig. 2 and Fig. 3 explanation according to a kind of drive unit of track shaking table of the present invention.Add 100 with the part of Fig. 1 identical function with identical label among Fig. 2 and Fig. 3 and refer to, and no longer its function is described in detail.
Fig. 2 is a decomposing schematic representation, and a preferred embodiment of drive unit of the present invention is shown.Wherein, described drive unit comprises three driven unit 16a, 16b, 16c.Each stator driven unit 16a, 16b, 16c respectively comprise stator 14a, a 14b, 14c and rotor 15a, a 15b, 15c.As shown in Figure 2, rotor 15a, 15b, 15c rotation are arranged on the lower end axle 103b of crank 103 regularly.Three rotor 15a, 15b, 15c are identical with the angular relationship of corresponding crank.Rotor core is a salient pole type with for example silicon steel sheet manufacturing of soft magnetic materials, and four magnetic poles are arranged in the present embodiment, and rotor does not have coil.Three stator 14a, 14b, 14c are fixedly mounted on the bearing 101, surround rotor 15a, 15b, 15c respectively with one heart, constitute three driven unit 16a, 16b, 16c together with corresponding rotor.Stator core soft magnetic materials manufacturing also is a salient pole type, and four magnetic poles are arranged in the present embodiment, respectively is wound with a coil on four magnetic poles. Driven unit 16a, 16b, four coil series connection of 16c or formation one phase winding that is connected in parallel are by electronic switch control energising and outage not shown in the figures.The magnetic pole of the stator center pole of three driven units is pressed from both sides 30 ° of angles mutually as shown in Figure 3.The mutual alignment relation of three rotor 15a, 15b, 15c and three stator 14a, 14b, 14c also is shown among Fig. 3, and the axle center that has connected rotor 15a, 15b, 15c with chain-dotted line among the figure is to illustrate their synchronous interaction relation.
The operation principle of shaking table drive unit of the present invention is described below with reference to Fig. 3 a-Fig. 3 b.Switch S a and the power supply E of driven unit 16a only are shown among the figure, and omit and illustrate the parts that operation principle is irrelevant.For the purpose of simplifying the description, the following description passes to electric current with the stator coil of each driven unit based on 50% dutycycle.
Referring to Fig. 3 a, in this position, the angle of the magnetic pole center line of the stator 14a of driven unit 16a and the pole center line of rotor 15a is a miter angle.Sa makes its winding energising if at this moment close a switch, and sets up a magnetic field in this assembly, and magnetic flux is located closure through stator yoke, magnetic pole of the stator, air gap, rotor magnetic pole, rotor yoke etc.Magnetic resistance when the magnetic resistance of magnetic circuit is greater than the central lines of magnetic pole of the stator, rotor magnetic pole at this moment, therefore rotor 15a will be subjected to the torque of the tangential magnetic pull generation of the magnetic line of force crooked in the air gap, rotor 15a is counterclockwise rotated, drive crank 103a and 103b, 103c and counterclockwise rotate.Be not difficult to find out that the rotation of crank 103a and 103b, 103c is synchronous, thereby the rotation of rotor 15a, 15b, 15c also is synchronous.
When rotor 15a rotated 30 ° of angles, because the rotation of rotor 15a, 15b, 15c is synchronous, and the pole center line angle of cut of stator 14a and stator 14a is 30 ° of angles, the magnetic pole of stator 14b is identical when just in time beginning to switch on driven unit 16a with the relative position of the magnetic pole of rotor 15b, shown in Fig. 3 b.Carve the stator winding electrifying that makes driven unit 16b at this moment, set up a magnetic field at driven unit 16b, identical with above-mentioned principle, rotor 15b is subjected to the torque of the tangential magnetic pull generation of the magnetic line of force crooked in the air gap, rotor 15b is counterclockwise rotated, and the torque that rotor 15a is produced with stator 14a is superposition mutually.Comparison diagram 3a and Fig. 3 b are as can be seen, when these two stator 14a, 14b switch on when making rotor turn over 15 ° of angles more jointly simultaneously, the pole center line of stator 14a overlaps with the pole center line of rotor 15a, at this moment magnetic resistance minimum, rotor 15a reaches the equilbrium position, be stator 14a and rotor 15a during extremely to the utmost point, the tangential force of driven unit 16a contribution disappears.Carve at this moment and open switch S a, thereby the outage of the winding of stator 14a makes it rotor 15a not to be produced the braking square.When the independent energising of driven unit 16b turns over 15 ° of angle again, state when the pole center line of the stator 14c of driven unit 16c and the relative position of the magnetic pole of rotor 15c just in time begin to switch on the stator winding of driven unit 16a or 16b is identical, so the energising of the winding of the stator 14c of driven unit 16c.In driven unit 16c, set up a magnetic field.The stator winding of driven unit 16b and 16c is switched on simultaneously and is made rotor turn over 15 ° of angles, the then stator winding of driven unit 16c when energising makes rotor turn over 15 ° of angle more separately, whole drive unit is promptly just the same with state shown in Fig. 3 a, and only the magnetic pole of the commentaries on classics 15a that the magnetic pole of the stator 14a of driven unit 16a is relative has turned over 90 ° of angles.That is to say that three driven unit 16a, 16b, 16c wheel flow-thru electrode once are installed in to equal angles position relation the rotor polar distance that three the counterclockwise 15a of rotor, 15b, 15c on three crank lower end axles have rotated 90 °.Continuously press the order of a-b-c-a and give each phase stator winding wheel flow-thru electrode respectively, three rotor 15a, 15b, 15c promptly rotate in the counterclockwise direction continuously synchronously.Give each phase stator winding wheel flow-thru electrode respectively if continuously press the order of a-c-b-a, three rotor 15a, 15b, 15c promptly rotate along clockwise direction continuously.
The energising of stator 14a, 14b, 14c coil and outage are finished by electronic switch, and signal that electronic switch can send by position sensor with known mode in the field or phase current detect the signal that sends and control.Therefore the shaking table drive unit of this embodiment can be called switching magnetic-resistance formula drive unit.When the use location sensor provides switch controlling signal, for example can be with the position, angle of a crank lower end axle as detected object.
Be not difficult to find out that more than Shuo Ming driven unit comes down to single-phase switched reluctance motor.Known as those of ordinary skill in the field, the single-phase switch reluctance motor is not gone up self-running ability at an arbitrary position.But because the angular relationship of the synchronized relation of three rotor 15a, 15b of the driven unit of shaking table drive unit of the present invention, 15c and three stator 14a, 14b, 14c pole center line, three driven unit 16a, 16b of the present invention, 16c be in conjunction with the threephase switch reluctance motor that has constituted an integral body, and possess the advantage that switched reluctance motor and other motor are compared.The transmission device of conventional track shaking table has been removed in the application of the present invention on the track shaking table, and the axle of drive unit is exactly the lower end axle of crank, has reduced number of spare parts and has reduced the fringe cost of making motor separately, can also dwindle the volume of complete machine simultaneously.
Compare with the ordinary tap switched reluctance motor, shaking table drive unit of the present invention also has its unique advantage.For example between different driving assembly stator of the present invention and stator, rotor and rotor, do not have public yoke, do not have the alternate mutual inductance when switching on simultaneously.And, if be not subjected to the inductive interference of the phase of switching on when adopt detecting the angle position of induced electromotive force detection rotor of certain phase by known method in the field fully.
Those of ordinary skill it can also be seen that counting switched reluctance motor with rotor magnetic pole and comparing bigger repetitive rate and electromagnetic conversion rate are arranged of the present invention and routine in the field.Advantage and feature that the inventor finds out easily for those of ordinary skill in more such fields are not further described.
More than Shuo Ming embodiment is a kind of magnetic pole arrangement of the 4-4 utmost point, yet the present invention can also have other magnetic pole arrangement.Preferably the number of magnetic poles of described driven unit is an even number.The stator of the driven unit of a 8-8 utmost point arrangement and the schematic diagram of rotor core punching shown in Fig. 4.Because number of magnetic poles of the present invention can have many possibilities, provide great flexibility for the shaking table design that different torque requests, different rotating speeds require and speed stability requires or the like.
More than the supposition of the drive current dutycycle of explanation 50% is not that the present invention is necessary just for convenience of explanation.
Driven unit of the present invention is not limited to single-phase, and track shaking table drive unit of the present invention also is not limited to comprise three driven units.It is contemplated that the driven unit that two-phase is set when for example needing on two or three cranks, constitute like this four mutually or six phase drive units also have reversible self-starting ability on the optional position.
More than the rotor of each driven unit is identical with respect to the angle position relation of corresponding crank in the explanation, the angle of a rotor polar distance/number of phases and adjacent magnetic pole of the stator center line staggers, but the rotor that each driven unit also can be arranged is with respect to stagger the accordingly angle of a rotor pole road/number of phases of the crank of correspondence, and the embodiment that adjacent magnetic pole of the stator center line is parallel to each other can have adjacent magnetic pole of the stator center line even with always the stagger embodiment of angle of a rotor polar distance/number of phases of rotor centerline.
Driven unit of the present invention also is not limited to the switching magnetic-resistance formula, for example can be magneto or the like.
Shaking table of the present invention mainly is meant the track shaking table, but the present invention does not get rid of the straight line shaking table or the track-linear dual-purpose shaking table of reequiping with technique known on track shaking table basis.
By read with explanation, can propose the embodiment of various improvement and modification and do not depart from the scope of the present invention above explanation in the field, therefore the definition that only provides of category of the present invention by claims.
Claims (10)
1. track shaking table drive unit, described track shaking table drive unit comprises a plurality of driven units, each described driven unit all has a stator and a rotor, come down to the motor of a low number of phases, the stator of described driven unit is fixedly mounted on the bearing of shaking table, concentric with rotor, be wound with coil on the stator, it is characterized in that, the rotor of each driven unit directly is fixedly mounted on the lower end axle of corresponding crank, the center line angle each other of the difference of the upper shaft of adjacent rotor pole center line and corresponding crank and the angle of lower end axle line and adjacent magnetic pole of the stator and equal rotor polar distance/total number of phases, described total number of phases is the summation of the number of phases of whole described a plurality of driven units, controls the energising and the outage of the stator winding of driven unit with electronic switch.
2. track shaking table drive unit as claimed in claim 1 is characterized in that, a described driven unit is a switched reluctance motor.
3. track shaking table drive unit as claimed in claim 1 or 2 is characterized in that, described driven unit is a single-phase switched reluctance motor.
4. as one of above claim described track shaking table drive unit, it is characterized in that the stator magnet number of poles of described switched reluctance motor is an even number and identical with the rotor magnetic pole number.
5. as the described track shaking table of one of claim 1 to 3 drive unit, it is characterized in that the stator magnet number of poles of described switched reluctance motor is an even number, and is identical with the rotor magnetic pole number.
6. track shaking table drive unit as claimed in claim 1 or 2 is characterized in that each of described a plurality of driven units is the switched reluctance motor of a two-phase.
7. as one of above claim described track shaking table drive unit, wherein, the pole center line of all rotors is identical with the angle position of corresponding crank relation, and the center line of adjacent magnetic pole of the stator is the angle of rotor polar distance/total number of phases to each other, described total number of phases be all described a plurality of driven units the number of phases and.
8. as the described track shaking table of one of claim 1 to 6 drive unit, adjacent rotor pole center line is the angle of rotor polar distance/total number of phases with the angle difference of the upper shaft lower end axle line of corresponding crank, and the center line of magnetic pole of the stator is parallel to each other, described total number of phases be all described a plurality of driven units the number of phases and.
9. track shaking table, described shaking table comprises a bearing, a cage chair and a pivot that is connected between bearing and the cage chair and props up mechanism, described pivot props up mechanism and comprises at least one crank, the lower end of described crank is a vertical axle, be connected on the bearing by a bearing, its upper end also is a vertical axle, is connected on the cage chair by a bearing, it is characterized in that its drive unit is the described shaking table drive unit of one of above claim.
10. shaking table as claimed in claim 9 is characterized in that, described shaking table is reciprocating type shaking table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510114727 CN1954904A (en) | 2005-10-26 | 2005-10-26 | Drive device of orbital table and table using the drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510114727 CN1954904A (en) | 2005-10-26 | 2005-10-26 | Drive device of orbital table and table using the drive device |
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| Publication Number | Publication Date |
|---|---|
| CN1954904A true CN1954904A (en) | 2007-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510114727 Pending CN1954904A (en) | 2005-10-26 | 2005-10-26 | Drive device of orbital table and table using the drive device |
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|---|---|
| CN (1) | CN1954904A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028150A (en) * | 2014-06-24 | 2014-09-10 | 苏州大学 | Culture solution shake-up device capable of enabling four polarons to be completely in state of dynamic balance |
| CN112410214A (en) * | 2020-06-22 | 2021-02-26 | 北京桑翌实验仪器研究所 | Rail mounted vibration incubator |
| CN114768629A (en) * | 2022-02-10 | 2022-07-22 | 苏州捷美电子有限公司 | Constant temperature oscillator |
-
2005
- 2005-10-26 CN CN 200510114727 patent/CN1954904A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028150A (en) * | 2014-06-24 | 2014-09-10 | 苏州大学 | Culture solution shake-up device capable of enabling four polarons to be completely in state of dynamic balance |
| CN104028150B (en) * | 2014-06-24 | 2016-08-24 | 苏州大学 | Quadrapole complete dynamic balancing culture fluid oscillating uniform device |
| CN112410214A (en) * | 2020-06-22 | 2021-02-26 | 北京桑翌实验仪器研究所 | Rail mounted vibration incubator |
| WO2021258267A1 (en) * | 2020-06-22 | 2021-12-30 | Shinetek Instrument Research Institute | Incubator with orbital shaker |
| US11898133B2 (en) | 2020-06-22 | 2024-02-13 | Shinetek Instrument Research Institute | Orbital incubator shakers |
| CN114768629A (en) * | 2022-02-10 | 2022-07-22 | 苏州捷美电子有限公司 | Constant temperature oscillator |
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Open date: 20070502 |