CN103411015B - The single-phase piece insertion type direct acting electromagnet of force-displacement behavior symmetry - Google Patents
The single-phase piece insertion type direct acting electromagnet of force-displacement behavior symmetry Download PDFInfo
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Abstract
The single-phase direct acting piece insertion type electromagnet of force-displacement behavior symmetry, comprises armature assembly, stator component, housing, front cover and rear end cover; Described stator component has monophase current excitation structure; Annular permanent magnets is between the right retainer of stator and the left retainer of stator, and the model split divided equally according to whole circumference becomes even number region, and territory, N polar region and territory, S polar region are spaced; Armature retainer surface is divided into the region corresponding with permanent magnet, and the region of inserting the first armature silicon steel plate 5 is spaced with the region of inserting the second armature silicon steel plate 15.Second rectangular teeth on first armature silicon steel plate 5 needs the distance of second rectangular teeth facewidth fallen behind on the second armature silicon steel plate 15; And the 3rd rectangular teeth on the first armature silicon steel plate 5 needs the distance of the 3rd the rectangular teeth facewidth shifted to an earlier date on the second armature silicon steel plate 15.
Description
Technical field
The present invention relates to the electromechanical converter belonging to electro-hydraulic proportional valve in Fluid-transmission and control field, particularly relate to a kind of single-phase piece insertion type direct acting electromagnet of force-displacement behavior symmetry.
Background technique
In electric-hydraulic proportion/servo-control system, as electric-hydraulic proportion/servovalve critical component electromechanical converter due to working stroke less, its performance mainly pursues the real-time and precision that electric energy and mechanical energy changes, namely require, while ensureing certain ouput force/moment, to obtain higher dynamic response as far as possible.In addition, in particular circumstances (as applications such as vehicle-mounted or Aero-Space), also require that valve and electromechanical switching mechanism are while guarantee output power, can reduce boundary dimension and weight as far as possible.
With traditional electromechanical converter as compared with torque motor, linear force motor and proportion electro-magnet, the maximum feature of biconvex tooth-like valve electromechanical converter is that stators and rotators (armature) has some little teeth, thus there is the feature that ouput force (moment) and control accuracy are directly proportional to the number of teeth of rotor (armature), in the fields such as the 2D valve based on hydraulic servo screw mechanism, obtain application in recent years.Biconvex tooth-like valve electromechanical converter can be divided into radial split-phase type and axial phase formula two kinds according to the difference of stator phase-splitting mode, the latter is compared with the former, by stator excitation being rearranged to mutually the one or both sides of permanent magnet, thus the novel valve electromechanical converter such as multiple rotary, direct-acting type, single-phase and two-phase can be formed, and be easy to be designed to the high pressure resistant structure of wet type.
All there is the problem of eddy current in the electromagnetic element worked under interchange control mode, is all generally by the mode of stator-rotor iron core lamination is reduced eddy current loss.The biconvex tooth-like valve electromechanical converter of axial phase formula due to can not as radial phase separation structure lamination vertically, so can only monolithic construction be adopted.But this structure eddy current effect under exchange way controls is serious, the idle work loss of electromechanical converter is increased, coil heating is serious, and eddy current also plays certain inhibition to the change of electric current in controlled winding, have impact on the dynamic performance of electromechanical converter.In addition, the feature of its rotor monolithic construction also determines the soft magnetic material that block of metal must be used as iron core, thus weight is remained high, and have impact on the power-weight ratio of complete machine.For this reason, also there is patent to propose to utilize plastic materialss such as strengthening nylon as rotor retainer, form the high dynamic axial phase formula electromechanical converter of low eddy current by the mode of inserted sheet.
It is no matter the single-phase direct acting electromagnet of monolithic construction or piece insertion type structure, its basic functional principle is all one side stator being placed in permanent magnet, stator forms three sections of annular working gas gaps successively with armature, permanent magnet produces polarizing magnetic field under two sections of working gas gaps wherein, field coil is stator interior generation controlling magnetic field mutually belonging to it then, and field current direction changes and causes controlling magnetic field to do differential superposition to produce electromagnetic force to permanent magnet pole magnetizing field.If suppose that the magnetic resistance of stator iron core and armature is zero, then the polarizing magnetic field intensity that produces under two sections of working gas gaps of permanent magnet is identical, now magnetic circuit is symmetrical, and namely the force-displacement behavior amplitude that obtains under different direction field current of electromagnet is equal, and force-displacement behavior is symmetrical, but actual conditions are stator iron core and armature all has certain magnetic resistance, theoretical according to magnetic circuit, polarizing magnetic field intensity under one section of working gas gap that now distance permanent magnet is far away is more weak, and polarizing magnetic field under the nearer one section of working gas gap of distance permanent magnet is stronger, this magnetic circuit just causing electromagnet is asymmetric, when the magnetic field of field current and the magnetic field difference fold added-time of permanent magnet, the force-displacement behavior of electromagnet is subject to the impact in field current direction, namely the force-displacement behavior amplitude obtained under the field current of different direction is not etc., present a kind of asymmetric feature, when it can be used as valve electromechanical converter to use, this asymmetric force-displacement behavior can have influence on the positioning precision of valve, make it cannot present the due high-performance of Proportional valve.
Summary of the invention
The present invention will overcome prior art to be affected by the magnetoresistive effect of stator iron core and armature, present a kind of defect of asymmetric feature, a kind of magnetoresistive effect impact that can overcome iron core and armature is provided, the force-displacement behavior amplitude obtained under different direction field current is equal, the electromagnet of force-displacement behavior symmetry.
The single-phase direct acting piece insertion type electromagnet of force-displacement behavior symmetry, comprise armature assembly, stator component, housing, front cover and rear end cover, stator component retrains fixing by housing 2, front cover 1 and rear end cover 3 vertically; It is characterized in that: described stator component has monophase current excitation structure;
Annular permanent magnets 10 is between the right retainer of stator 12 and the left retainer 4 of stator and changed into N pole and S level by axial magnetic; Permanent magnet 10 is divided into even number region according to the mode of the whole circumference quartering, the equal axial charging in each region, and territory, N polar region and territory, S polar region are spaced;
Described armature assembly comprises armature retainer 6, first armature silicon steel plate 5, second armature silicon steel plate 15 and push rod 7; Armature retainer 6 is provided with axis hole near rear end cover 3 side, and push rod 7 one end and the axis hole of armature retainer 6 are that interference is connected, and its other end is supported on front cover 1 by linear bearing 8, push rod 7 for valve spool;
The radial external cylindrical surface of armature retainer 6 has some equally distributed slots for inserting the first armature silicon steel plate 5 and the second armature silicon steel plate 15, first armature silicon steel plate 5 and the second armature silicon steel plate 15 are and adopt the cold stamping shaped flat-shaped of silicon steel material, it have the distribution in unequal interval and equal three rectangular teeths of the facewidth; On second armature silicon steel plate 15 facewidth of three rectangular teeths need and two pole-core widths under the first stator silicon steel sheet 11 and the pole-core width of the second stator silicon steel sheet 9 equal, unify to be designated as P1; The pole-core width of the first stator silicon steel sheet 11 near permanent magnet 10 1 pole and the pole-core width of the second stator silicon steel sheet 9, and the distance S2 demand fulfillment relation S1=S2+P1/2 on the axial dimension three sum S1 of annular permanent magnets 10 and the second armature silicon steel plate 15 between two rectangular teeths of rear end cover 3; Demand fulfillment relation L2=L1+P1/2 between the live part length L1 of whole stationary part and the length L2 of the second armature silicon steel plate 15;
The length of the first armature silicon steel plate 5, thickness and on it rectangular teeth facewidth of distribution identical with the second armature silicon steel plate 15; Second rectangular teeth on first armature silicon steel plate 5 falls behind the distance of second rectangular teeth facewidth on the second armature silicon steel plate 15, i.e. S3=S2+P1; And the 3rd rectangular teeth on the first armature silicon steel plate 5 needs the distance of the 3rd the rectangular teeth facewidth shifted to an earlier date on the second armature silicon steel plate 15, i.e. S4=L2-P1;
The surface of armature retainer 6 is divided into the even number region corresponding with permanent magnet 10, and the slot count in each region is equal, and the region of inserting the first armature silicon steel plate 5 is spaced with the region of inserting the second armature silicon steel plate 15.
Preferably, permanent magnet 10 becomes 4 regions according to the model split of the whole circumference quartering, the equal axial charging in each region, and territory, N polar region and territory, S polar region are spaced.
Further, the monophase current excitation structure of described stator component comprises: the right retainer of stator 12, first stator silicon steel sheet 11, the left retainer of stator 4, second stator silicon steel sheet 9, coil retainer 14, control coil 13 and circular permanent magnet 10; The right retainer of stator 12 being radially distributed with equally spaced slot for inserting the first stator silicon steel sheet 11, first stator silicon steel sheet 11 is the flat Contraband shape adopting silicon steel material cold stamping shaped; The left retainer of stator 4 being equally radially distributed with equally spaced slot for inserting the second stator silicon steel sheet 9, second stator silicon steel sheet 9 is the flat-shaped adopting silicon steel material cold stamping shaped; First stator silicon steel sheet 11 and the second stator silicon steel sheet 9 all insert the right retainer of stator 12 and the left retainer of stator 4 slot with the cooperation of interference a little produces the necessary stator tooth structure of electromagnetic force to form;
The semi-cylindrical form of the right retainer 12 of stator in hollow, inside it, cylinder is emptied, form part-annular cavity, the right retainer 12 of the stator that described coil retainer 14 is positioned at two same shapes fastens the cavity formed mutually, and control coil 13 forms current excitation phase around on it;
Further, armature retainer 6 is the enhancing nylon material molding and forming of high strength, and armature retainer 6, in hollow cup-shaped, effectively to reduce the movement inertia of armature, improves its dynamic response; The right retainer of stator 12 and the left retainer 4 of stator, all by the enhancing nylon material molding and forming of high strength, while the strength and stiffness that maintenance is certain, can greatly alleviate complete machine weight, be conducive to the power-weight ratio improving complete machine; Housing and front and rear cover also adopt the enhancing nylon material molding and forming of high strength.
Beneficial effect of the present invention is mainly manifested in: the Electromagnetic Design 1, by improving, make the force-displacement behavior of single-phase piece insertion type direct acting electromagnet symmetrical, namely the force-displacement behavior amplitude obtained under the field current of different direction is equal, is conducive to the positioning precision improving valve.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention;
Fig. 2 is the structural representation of the first stator silicon steel sheet of the present invention;
Fig. 3 is the right retainer structural representation of stator of the present invention;
Fig. 4 is the schematic diagram after the right retainer combination of two panels stator after plugging stator silicon steel sheet in the present invention;
Fig. 5 is the structural representation of the second stator silicon steel sheet of the present invention;
Fig. 6 is the structural representation of the left retainer of stator of the present invention;
Fig. 7 is the structural representation of the first armature silicon steel plate of the present invention;
Fig. 8 is the structural representation of the second armature silicon steel plate of the present invention;
Fig. 9 is the structural representation of the armature retainer in the present invention;
Figure 10 inserts the armature component overall schematic after the first armature silicon steel plate and the second armature silicon steel plate by interval mode between two in the present invention;
To be the present invention insert the armature component end view after the first armature silicon steel plate and the second armature silicon steel plate by interval mode between two to Figure 11;
Figure 12 is that permanent magnet of the present invention magnetizes mode schematic diagram;
Figure 13 is physical dimension schematic diagram of the present invention;
Figure 14 is the working principle schematic diagram for the traditional single phase piece insertion type direct acting electromagnet with the present invention's contrast;
Figure 15 a, 15b and 15c are working principle schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1 ~ Figure 15 c, a kind of single-phase direct acting piece insertion type electromagnet of force-displacement behavior symmetry, its main structure comprises armature assembly, stator component, housing, front cover and rear end cover.Described stationary part comprises the right retainer of stator 12, first stator silicon steel sheet 11, the left retainer of stator 4, second stator silicon steel sheet 9, coil retainer 14, control coil 13 and circular permanent magnet 10; The right retainer of stator 12 and the left retainer 4 of stator, all by the enhancing nylon material molding and forming of high strength, while the strength and stiffness that maintenance is certain, can greatly alleviate complete machine weight, be conducive to the power-weight ratio improving complete machine; The right retainer of stator 12 being radially distributed with equally spaced slot for inserting the first stator silicon steel sheet 11, first stator silicon steel sheet 11 is the flat Contraband shape adopting silicon steel material cold stamping shaped; The left retainer of stator 4 being equally radially distributed with equally spaced slot for inserting the second stator silicon steel sheet 9, second stator silicon steel sheet 9 is the flat-shaped adopting silicon steel material cold stamping shaped; First stator silicon steel sheet 11 and the second stator silicon steel sheet 9 all insert the right retainer of stator 12 and the left retainer of stator 4 slot with the cooperation of interference a little produces the necessary stator tooth structure of electromagnetic force to form; The semi-cylindrical form of the right retainer 12 of stator in hollow, inside it, cylinder is emptied, form part-annular cavity, the right retainer 12 of the stator that described coil retainer 14 is positioned at two same shapes fastens the cavity formed mutually, and control coil 13 forms current excitation phase around on it; Described annular permanent magnets 10 is between the right retainer of stator 12 and the left retainer 4 of stator and changed into N pole and S level by axial magnetic.For ensureing that force-displacement behavior is symmetrical, permanent magnet 10 must be divided into several regions according to by whole circumference in the mode of even number decile, the equal axial charging in each region, and territory, N polar region and territory, S polar region are spaced.Say from technological angle, halving, it is the most convenient to magnetize, but electromagnet has the unbalanced problem of radial force, thus has influence on the working life of bearing; The lifting of too much decile to electromagnet performance does not help, and comparatively loaded down with trivial details in the technique that magnetizes, and thus comprehensive, the practicability that the permanent magnet quartering magnetized is best, as shown in figure 12.
Described armature assembly comprises armature retainer 6, first armature silicon steel plate 5, second armature silicon steel plate 15 and push rod 7 three part.Armature retainer 6 is the enhancing nylon material molding and forming of high strength, by armature retainer 6 is designed to hollow cup-shaped, effectively can reduces the movement inertia of armature, improve its dynamic response.Armature retainer 6 is provided with axis hole near rear end cover 3 side, and push rod 7 one end and the axis hole of armature retainer 6 are that interference is connected, and its other end is supported on front cover 1 by linear bearing 8, push rod 7 for valve spool.
The radial external cylindrical surface of armature retainer 6 has some equally distributed slots for inserting the first armature silicon steel plate 5 and the second armature silicon steel plate 15, first armature silicon steel plate 5 and the second armature silicon steel plate 15 are and adopt the cold stamping shaped flat-shaped of silicon steel material, it have the distribution in unequal interval and equal three rectangular teeths of the facewidth; For realizing the normal work of electromagnet, on second armature silicon steel plate 15 facewidth of three rectangular teeths need and two pole-core widths (facewidth) under the first stator silicon steel sheet 11 and the pole-core width (facewidth) of the second stator silicon steel sheet 9 equal, unify to be designated as P1; The pole-core width of the first stator silicon steel sheet 11 near permanent magnet 10 1 pole and the pole-core width of the second stator silicon steel sheet 9, and the distance S2 demand fulfillment relation S1=S2+P1/2 on the axial dimension three sum S1 of annular permanent magnets 10 and the second armature silicon steel plate 15 between two rectangular teeths of rear end cover 3; Demand fulfillment relation L2=L1+P1/2 between the effective length L1 of whole stationary part and the length L2 of the second armature silicon steel plate 15.The total length of the first armature silicon steel plate 5, thickness and on it distribution the rectangular teeth facewidth identical with the second armature silicon steel plate 15, for making the force-displacement behavior of electromagnet equal, reach operationally, the region stator silicon steel sheet of half and armature silicon steel plate is had to be in the state of " tooth is to tooth " under work of electromagnet air gap, half region stator silicon steel sheet and armature silicon steel plate are then in the state of " tooth is to groove " in addition, look from left to right, second rectangular teeth on first armature silicon steel plate 5 needs the distance of second rectangular teeth facewidth fallen behind on the second armature silicon steel plate 15, i.e. S3=S2+P1, and the 3rd rectangular teeth on the first armature silicon steel plate 5 needs the distance of the 3rd the rectangular teeth facewidth shifted to an earlier date on the second armature silicon steel plate 15, i.e. S4=L2-P1, as shown in figure 13.
In order to ensure that force-displacement behavior is symmetrical, the slot count of armature retainer 6 must be can by 2 the even number of dividing exactly, armature retainer 6 can be divided into the equal some even number regions of slot count with this, the region of inserting the first armature silicon steel plate 5 is spaced with the region of inserting the second armature silicon steel plate 15, note the number of regions needs of armature retainer 6 and the number of regions correspondence of aforementioned permanent magnet 10, namely the radian in equal, each region of both zoning numbers is identical.
Stator component retrains fixing by housing 2, front cover 1 and rear end cover 3 vertically.For alleviating complete machine weight further, housing and front and rear cover also can adopt the enhancing nylon material molding and forming of high strength.
This piece insertion type direct acting electromagnet can adopt pulsed to control, and also can adoption rate formula control.For describe clear for the purpose of, to magnetize for the permanent magnet quartering below, armature retainer radial equipartition 24 slots and be divided into the single-phase piece insertion type direct acting electromagnet in four regions, control to set forth working principle of the present invention with pulsed:
First the working principle setting forth traditional single-phase piece insertion type direct acting electromagnet is necessary, to doing individual comparison with content of the present invention, as shown in figure 14, the same with the present invention, traditional single-phase piece insertion type direct acting electromagnet is also by forming three sections of annular working gas gap δ 1, δ 2, δ 3 between stator and armature, permanent magnet wherein two sections of working gas gap δ 2 and δ produces polarizing magnetic field 3 times, field coil its stator mutually in produce controlling magnetic field, with the direction of field current change and cause controlling magnetic field to do differential superposition to produce electromagnetic force to magnetic field of permanent magnet.But and the present invention unlike, the armature silicon steel plate on traditional single-phase piece insertion type direct acting electromagnet armature retainer only has independent one, and permanent magnet is overall axial charging.Can see, no matter how field current direction changes, the necessarily following one of two things of the magnetic field under two sections of working gas gap δ 2 and δ 3:
I. the magnetic field of δ 2 times permanent magnets and field coil strengthens mutually, cancels out each other in the magnetic field of δ 3 times permanent magnets and field coil;
II. the magnetic field of δ 3 times permanent magnets and field coil strengthens mutually, cancels out each other in the magnetic field of δ 2 times permanent magnets and field coil;
If suppose that the silicon steel plate magnetic resistance of stator and armature is zero, then the polarizing magnetic field intensity that produces under two sections of working gas gaps of permanent magnet is identical, now magnetic circuit is symmetrical, force-displacement behavior is independent of the change in field current direction, namely power-displacement amplitude of obtaining under the field current of different direction of electromagnet is equal, and force-displacement behavior is symmetrical; But the silicon steel plate that actual conditions are stator and armature all has certain magnetic resistance, theoretical according to magnetic circuit, polarizing magnetic field intensity under one section of working gas gap δ 3 that now distance permanent magnet is far away is more weak, and polarizing magnetic field under the nearer one section of working gas gap δ 2 of distance permanent magnet is stronger, from the angle of the electromagnetic force amplitude produced, the power amplitude that I kind situation produces is large and power amplitude that the is generation of II kind situation is little, because electromagnet magnetic circuit is asymmetric, the force-displacement behavior amplitude that it obtains under the field current of different direction not etc., does not present a kind of asymmetric feature.
Can gain enlightenment from above-mentioned discussion, if can accomplish no matter how field current direction changes, all the time there is half of close permanent magnet section of air gap under two sections of working gas gaps and mutually strengthen away from respective magnetic field under half section of air gap of permanent magnet, and remaining half section of air gap near permanent magnet and the words of cancelling out each other away from respective magnetic field under half section of air gap of permanent magnet, magnetic circuit just can be symmetrical, the force-displacement behavior of electromagnet just can be symmetrical, and the power amplitude that the field current of different direction produces just can be equal.
According to this principle, the present invention proposes the single-phase piece insertion type direct acting electromagnet of so-called force-displacement behavior symmetry, by changing the mode that magnetizes of permanent magnet and two kinds of armature silicon steel plates of axial side set, the force-displacement behavior realizing electromagnet is symmetrical.
With reference to Figure 15 a ~ 15c, the rotor-position shown in Figure 15 a is made to be initial position, when control coil 13 obstructed electric current time, the polarizing magnetic field only having permanent magnet to produce in working gas gap δ 1, δ 2, δ 3, δ 4, δ 5; When control coil 13 passes into electric current as illustrated in fig. 15b, (⊙ direction represents outside along paper, ⊕ direction represents along paper inwards), Current Control magnetic field superposes in working gas gap δ 2, δ 3, δ 4, δ 5 mutually with permanent magnet polarization magnetic field, wherein working gas gap δ 3 and δ 5 times controlling magnetic fields are identical with permanent magnet polarization magnetic direction, and magnetic field strengthens; Working gas gap δ 2 is contrary with permanent magnet polarization magnetic direction with δ 4 times current fields, cancel out each other in magnetic field, now whole armature is subject to electromagnetic force and is moved to the left 1/4 tooth pitch, can see, the δ 3 now producing electromagnetic force is positioned at the one end away from permanent magnet, and δ 5 is near permanent magnet; The δ 4 not producing electromagnetic force is also positioned at the one end away from permanent magnet, and δ 2 is near permanent magnet; When control coil 13 passes into electric current as shown in fig. 15 c, working gas gap δ 2 and δ 4 times magnetic fields strengthen, cancel out each other in working gas gap δ 3 and δ 5 times magnetic fields, whole armature is subject to electromagnetic force and moves right 1/4 tooth pitch, the δ 4 now producing electromagnetic force is positioned at the one end away from permanent magnet, and δ 2 is near permanent magnet; The δ 3 not producing electromagnetic force is also positioned at the one end away from permanent magnet, and δ 5 is near permanent magnet; Can see, no matter how field current direction changes, always can realize having half of close permanent magnet section of air gap in two sections of working gas gaps and mutually strengthen away from respective magnetic field under half section of air gap of permanent magnet, and remain half section of air gap of close permanent magnet and cancel out each other away from respective magnetic field under half section of air gap of permanent magnet, namely magnetic circuit is symmetrical, thus ensure that the force-displacement behavior of electromagnet is symmetrical, the power amplitude that the field current of different direction produces is equal.
Above-mentioned embodiment is used for explaining the present invention, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (4)
1. the single-phase direct acting piece insertion type electromagnet of force-displacement behavior symmetry, comprises armature assembly, stator component, housing, front cover and rear end cover, and stator component retrains fixing by housing (2), front cover (1) and rear end cover (3) vertically; It is characterized in that: described stator component has monophase current excitation structure;
Annular permanent magnets (10) to be positioned between the right retainer of stator (12) and the left retainer of stator (4) and to be changed into N pole and S level by axial magnetic; The mode that permanent magnet (10) is divided equally according to whole circumference, is divided into even number region, the equal axial charging in each region, and territory, N polar region and territory, S polar region are spaced;
Described armature assembly comprises armature retainer (6), the first armature silicon steel plate (5), the second armature silicon steel plate (15) and push rod (7); Armature retainer (6) is provided with axis hole near rear end cover (3) side, push rod (7) one end is that interference is connected with the axis hole of armature retainer (6), its the other end is supported on front cover (1) by linear bearing (8), push rod (7) for valve spool;
The radial external cylindrical surface of armature retainer (6) has some equally distributed slots for inserting the first armature silicon steel plate (5) and the second armature silicon steel plate (15), first armature silicon steel plate (5) and the second armature silicon steel plate (15) are and adopt the cold stamping shaped flat-shaped of silicon steel material, it have the distribution in unequal interval and equal three rectangular teeths of the facewidth; The facewidth of upper three rectangular teeths of the second armature silicon steel plate (15) needs equal with the pole-core width of two pole-core widths under the first stator silicon steel sheet (11) and the second stator silicon steel sheet (9), unifies to be designated as P1; First stator silicon steel sheet (11) is near the pole-core width of permanent magnet (10) pole and the pole-core width of the second stator silicon steel sheet (9), and the axial dimension three sum S1 of annular permanent magnets (10) and the upper distance S2 demand fulfillment relation S1=S2+P1/2 between two rectangular teeths of rear end cover (3) of the second armature silicon steel plate (15); Demand fulfillment relation L2=L1+P1/2 between the effective length L1 of whole stationary part and the length L2 of the second armature silicon steel plate (15);
The length of the first armature silicon steel plate (5), thickness and on it rectangular teeth facewidth of distribution identical with the second armature silicon steel plate (15); Second rectangular teeth on first armature silicon steel plate (5) falls behind the distance of second rectangular teeth facewidth on the second armature silicon steel plate (15), i.e. S3=S2+P1; And the 3rd rectangular teeth on the first armature silicon steel plate (5) needs the distance of the 3rd the rectangular teeth facewidth shifted to an earlier date on the second armature silicon steel plate (15), i.e. S4=L2-P1;
The surface of armature retainer (6) is divided into the even number region identical with permanent magnet (10), and the slot count in each region is equal, and the region of inserting the first armature silicon steel plate (5) is spaced with the region of inserting the second armature silicon steel plate (15).
2. electromagnet as claimed in claim 1, it is characterized in that: permanent magnet (10) becomes 4 regions according to the model split of the whole circumference quartering, the equal axial charging in each region, and territory, N polar region and territory, S polar region is spaced.
3. electromagnet as claimed in claim 1 or 2, is characterized in that: the monophase current excitation structure of described stator component comprises: the right retainer of stator (12), the first stator silicon steel sheet (11), the left retainer of stator (4), the second stator silicon steel sheet (9), coil retainer (14), control coil (13) and circular permanent magnet (10); The right retainer of stator (12) is radially distributed with equally spaced slot for inserting the first stator silicon steel sheet (11), the first stator silicon steel sheet (11) is the flat Contraband shape adopting silicon steel material cold stamping shaped; The left retainer of stator (4) is equally radially distributed with equally spaced slot for inserting the second stator silicon steel sheet (9), the second stator silicon steel sheet (9) is the flat-shaped adopting silicon steel material cold stamping shaped; First stator silicon steel sheet (11) and the second stator silicon steel sheet (9) all insert the right retainer of stator (12) and the left retainer of stator (4) slot with the cooperation of interference a little produces the necessary stator tooth structure of electromagnetic force to form;
The right retainer of stator (12) semi-cylindrical form in hollow, inside it, cylinder is emptied, form part-annular cavity, the right retainer of stator (12) that described coil retainer (14) is positioned at two same shapes fastens the cavity formed mutually, and control coil (13) forms current excitation phase around on it.
4. electromagnet as claimed in claim 3, it is characterized in that: the enhancing nylon material molding and forming that armature retainer (6) is high strength, armature retainer (6), in hollow cup-shaped, effectively to reduce the movement inertia of armature, improves its dynamic response; The right retainer of stator (12) and the left retainer of stator (4), all by the enhancing nylon material molding and forming of high strength, while the strength and stiffness that maintenance is certain, can greatly alleviate complete machine weight, be conducive to the power-weight ratio improving complete machine; Housing and front and rear cover also adopt the enhancing nylon material molding and forming of high strength.
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| US3355309A (en) * | 1963-07-15 | 1967-11-28 | Gen Electric | Method and apparatus for applying coatings onto articles of manufacture |
| US5886443A (en) * | 1997-12-03 | 1999-03-23 | General Electric Canada Inc. | Spark suppression of induction type rotors of dynamoelectric machines |
| CN102594071A (en) * | 2012-03-20 | 2012-07-18 | 浙江工业大学 | Axial split-phase high-speed revolving electromagnet with symmetric magnetic paths |
| CN103107608A (en) * | 2013-01-25 | 2013-05-15 | 浙江工业大学 | Single-phase linear-motion inserting sheet type electromagnet |
| CN203413213U (en) * | 2013-07-03 | 2014-01-29 | 浙江工业大学 | Single-phase insert direct-current electromagnet with symmetrical force-displacement characteristics |
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