CN201854166U - Shaft-type linear motor - Google Patents
Shaft-type linear motor Download PDFInfo
- Publication number
- CN201854166U CN201854166U CN2010205294225U CN201020529422U CN201854166U CN 201854166 U CN201854166 U CN 201854166U CN 2010205294225 U CN2010205294225 U CN 2010205294225U CN 201020529422 U CN201020529422 U CN 201020529422U CN 201854166 U CN201854166 U CN 201854166U
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- type linear
- permanent
- elementary
- electric motors
- linear electric
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Abstract
The utility model discloses a shaft-type linear motor which comprises a primary and a secondary, wherein the primary is sheathed on the secondary; furthermore, an air gap exists between the internal surface of the primary and the external surface of the secondary so that the secondary can carry out linear motion along the axial direction; the primary comprises a shell and a coil winding; the secondary comprises an axially arranged core shaft and permanent magnetic rings that are sheathed on the core shaft and filled with magnetism along the axial direction. The shaft-type linear motor is characterized in that the coil winding comprises at least one hollow coil; the quantity of the permanent magnetic rings is at least two; the magnetism filling directions of the adjacent permanent magnetic rings are opposite; and the adjacent permanent magnetic rings are spaced by magnetic yokes. Compared with the prior art, in the shaft-type linear motor, the electromagnetic suction and the positioning force of alveolus do not exist between the primary and the secondary; and the thrust-weight ratio is large.
Description
Technical field
The utility model relates to the techniques of linear motor field.
Background technology
Cylindrical linear mainly contains permanent-magnet synchronous and responds to two kinds of asynchronous linear motors.There is tangible slot effect in the elementary ribbon core structure that is generally of permanent magnetic linear synchronous motor, and can't eliminates fully, influences precision positioning; In addition, because rigging error, primary and secondary is easy to generate magnetic attraction.Inductive asynchronous linear electric motors primary structure and synchronous machine are similar, secondary complex for conduction and permeability magnetic material composition, because pushing force density is little, efficient is low, servo performance is relatively poor, is not suitable for the precise motion system.
The utility model content
Technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of shaft type linear electric motors are provided, with the elimination slot effect, and electromagnetic attraction elementary and time inter-stage.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of shaft type linear electric motors, comprise primary and secondary, elementary be enclosed within secondary on, and there is air gap between elementary inner surface and the secondary outer surface, so that secondary moving linearly vertically, elementary shell and the coil windings of comprising secondaryly comprises vertically the mandrel of placing, and the permanent-magnetic clamp that is socketed on the mandrel and magnetizes vertically; Wherein, coil windings is made up of at least one air core coil, and permanent-magnetic clamp has two at least, and the magnetizing direction of adjacent permanent-magnetic clamp is opposite, between the adjacent permanent-magnetic clamp by yoke at interval.
For optimizing technique scheme, the measure of taking also comprises:
Between above-mentioned two air core coils adjacent one another are with insulating trip at interval.
Above-mentioned permanent-magnetic clamp is 5: 1～4: 1 with the axial length ratio of yoke.
Above-mentioned elementary end is provided with and can prevents the air core coil fixedly end ring of play vertically; Fixedly end ring is made by non-magnet material.
Can prevent the permanent-magnetic clamp fixture of play vertically above-mentioned secondary also comprising; This fixture is made by non-magnet material.
Compared with prior art, the elementary employing of a kind of shaft type linear electric motors of the utility model does not have the air core coil of core structure, thereby has avoided primary and secondary slot effect fully, has eliminated primary and secondary electromagnetic attraction simultaneously; In addition, suitably select the thickness of air core coil, elementary and secondary abundant lotus root is closed, produce maximum thrust-weight ratio.
Description of drawings
Fig. 1 is the structural representation of a kind of shaft type linear electric motors among the utility model embodiment;
Fig. 2 is the axial cutaway view of Fig. 1.
Embodiment
Below with reference to drawings and Examples the utility model is described in further detail.
Fig. 1 and Fig. 2 are a kind of structural representations of the utility model shaft type linear electric motors, Reference numeral wherein is: elementary 20, secondary 30, shell 21, insulating trip 22, air core coil 23, fixedly end ring 24, the fixedly wall thickness 25 of end ring, yoke 31, mandrel 32, permanent-magnetic clamp 33, fixture 34, screw 35.
As shown in Figure 1, the shaft type linear electric motors comprise elementary 20 and secondary 30 in the present embodiment, wherein elementary 20 is square, be enclosed within secondary 30 outside, and there is air gap between elementary inner surface and the secondary outer surface, behind elementary 20 access three-phase currents, with secondary 30 magnetic couplings, produce axial thrust, form linear reciprocating motion.
Fig. 2 is the axial cutaway view of Fig. 1, and elementary 20 comprise shell 21, insulating trip 22, a plurality of air core coil 23 and fixing end ring 24.Wherein, shell 21 is made of non-magnet_conductible material, and insulating trip 22 is made by insulating material; Air core coil 23 solderless wrapped connection vertically and is spaced with insulating trip 22 on the inner surface of shell 21, and promptly two adjacent air core coils 23 are separated by by insulating trip 22; Also be provided with in elementary 20 ends and can prevent the air core coil winding 23 fixedly end ring 24 of play vertically, fixedly end ring 24 is made by non-magnet_conductible material; Shell 21, insulating trip 22, air core coil 23 is packaged into one with fixing end ring 24 usefulness casting glues.
Secondary 30 comprise yoke 31, mandrel 32 and a plurality of permanent-magnetic clamp 33 of annular.Wherein, Huan Xing yoke 31 and permanent-magnetic clamp 33 are socketed in respectively on the mandrel 32; Permanent-magnetic clamp 33 magnetizes vertically, and the magnetizing direction of two permanent-magnetic clamps 33 adjacent one another are is opposite; Between two permanent-magnetic clamps 33 adjacent one another are with annular yoke 31 at interval; Secondary end also be provided be used for fixing permanent-magnetic clamp 33 vertically play fixture 34, fixture 34 is fixed by screw 35 two ends.Annular yoke 31 is made by permeability magnetic material; Mandrel 32 and fixture 34 are made by nonmagnetic substance.
As shown in Figure 2, permanent-magnetic clamp 33 magnetizes vertically, the magnetizing direction of two permanent-magnetic clamps 33 adjacent one another are is opposite, alternately be bonded on the yoke 31 of annular, the yoke 31 of the annular that will lead from the flux concentrating that permanent-magnetic clamp 33 flows out, air core coil 23 through elementary 20 is got back to adjacent yoke, through the permanent-magnetic clamp formation magnetic loop of another adjacent opposite polarity.Magnetic field in the magnetic circuit and winding linkage promptly produce long-range navigation thatch power; Because there is not invalid end in air core coil 23, suitably selects the thickness of air core coil, and elementary and secondary abundant lotus root is closed, and produces maximum thrust-weight ratio.
Close in order to produce maximum linkage magnetic, permanent-magnetic clamp 33 is chosen as 5: 1 with the thickness ratio of the yoke 31 of annular～and 4: 1; In addition, in order to reduce eddy current damping, fixedly the wall thickness 25 of end ring is guaranteeing under the sufficient mechanical strength, and is as far as possible little.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (7)
1. shaft type linear electric motors comprise elementary (20) and secondary (30), and elementary (20) are enclosed within on secondary (30), and have air gap between elementary (20) inner surface and secondary (30) outer surface, so that secondary (30) moving linearly vertically; Elementary (20) comprise shell (21) and coil windings, secondary (30) comprise the mandrel of placing vertically (32) and are socketed in the permanent-magnetic clamp (33) that mandrel (32) is gone up and magnetized vertically, and it is characterized in that: described coil windings is made up of at least one air core coil (23); Described permanent-magnetic clamp (33) has two at least, and the magnetizing direction of adjacent permanent-magnetic clamp (33) is opposite, between the adjacent permanent-magnetic clamp (33) by yoke (31) at interval.
2. a kind of shaft type linear electric motors according to claim 1 is characterized in that: described permanent-magnetic clamp (33) is 5: 1～4: 1 with the axial length ratio of yoke (31).
3. a kind of shaft type linear electric motors according to claim 1 is characterized in that: the end of described elementary (30) is provided with and can prevents air core coil (23) the fixedly end ring (24) of play vertically.
4. a kind of shaft type linear electric motors according to claim 1 is characterized in that: described secondary (20) also comprise can prevent permanent-magnetic clamp (33) fixture of play (34) vertically.
5. a kind of shaft type linear electric motors according to claim 3 is characterized in that: described fixedly end ring (24) is made by non-magnet material.
6. a kind of shaft type linear electric motors according to claim 4 is characterized in that: described fixture (34) is made by non-magnet material.
7. according to the described a kind of shaft type linear electric motors of arbitrary claim in the claim 1 to 6, it is characterized in that: use insulating trip (22) at interval between two air core coils (23) adjacent one another are.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205294225U CN201854166U (en) | 2010-09-10 | 2010-09-10 | Shaft-type linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205294225U CN201854166U (en) | 2010-09-10 | 2010-09-10 | Shaft-type linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201854166U true CN201854166U (en) | 2011-06-01 |
Family
ID=44096546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205294225U Expired - Lifetime CN201854166U (en) | 2010-09-10 | 2010-09-10 | Shaft-type linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201854166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594089A (en) * | 2012-03-08 | 2012-07-18 | 魏玉贤 | Underground three-phase direct-current permanent magnet closed-loop straight motor |
| CN106688169A (en) * | 2014-03-05 | 2017-05-17 | Eel能源 | Electric generator having permanent magnets and fitted with a magnetic flux collector |
-
2010
- 2010-09-10 CN CN2010205294225U patent/CN201854166U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594089A (en) * | 2012-03-08 | 2012-07-18 | 魏玉贤 | Underground three-phase direct-current permanent magnet closed-loop straight motor |
| CN106688169A (en) * | 2014-03-05 | 2017-05-17 | Eel能源 | Electric generator having permanent magnets and fitted with a magnetic flux collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |