CN208722671U - A kind of four magnetic column type electromagnet of wet type based on electrical excitation - Google Patents

A kind of four magnetic column type electromagnet of wet type based on electrical excitation Download PDF

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Publication number
CN208722671U
CN208722671U CN201820539303.4U CN201820539303U CN208722671U CN 208722671 U CN208722671 U CN 208722671U CN 201820539303 U CN201820539303 U CN 201820539303U CN 208722671 U CN208722671 U CN 208722671U
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China
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armature
magnetic
pedestal
conducting
magnetic column
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CN201820539303.4U
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Chinese (zh)
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孟彬
阮健
赵建涛
孙明明
蒲涛
王登
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

Four magnetic column type electromagnet of wet type based on electrical excitation, including pedestal, shell, pedestal and shell enclose inner cavity, armature shaft pass through the center of pedestal, the centre bore of armature, latch segment centre bore, with the connection of armature locking nut between armature and latch segment;Armature is in a manner of relative rotation and axial movement with armature axis connection, can be equipped with reset spring between armature and pedestal;Bobbin and control coil are respectively arranged on four conducting magnetic columns, inner cavity is divided into the seal chamber comprising yoke and the low pressure oil pocket comprising armature by seal cover board;When electric current is zero in control coil, under action of reset spring, armature is in initial position, i.e. the first positioning surface of the maximum functional gap position of armature pedestal at this time is contacted with armature;When being passed through electric current in control coil, armature is in operating position, i.e., armature is driven by electromagnetic force overcomes the resistance exercise of reset spring to minimum working gas gap position, and the second positioning surface of pedestal is contacted with armature at this time.

Description

A kind of four magnetic column type electromagnet of wet type based on electrical excitation
Technical field
The utility model belongs to the electromechanical converter of 2D digital switch valve in Fluid-transmission and control field, especially It is related to a kind of four magnetic pole bidirectional electromagnets based on electrical excitation.
Background technique
Electro-hydraulic servo, ratio and reversal valve etc. are used as core control element, play to the performance of entire electrohydraulic control system Conclusive influence is always the research hotspot of Fluid-transmission and control field.Due to electromechanical converter thrust output by To magnetically saturated limitation, so-called direct-acting valve can only be applied under low-pressure low flow.In order to work under high-pressure high-flow occasion, People are designed into the two-stage and multistage valve arrangement of pilot-operated type.Among all kinds of pilot control valves, it is based on slide valve double freedom The 2D valve of design realizes the function of pilot stage and power stage using two freedom degrees of radial rotary and axial movement of valve core of the spool valve, And the succinct of direct-acting valve is physically still kept, have the characteristics that lightweight high energy, structure are simple, frequency response is high and oil rub resistance, And may be constructed the complete serieses fluid control elements such as 2D electrohydraulic servo valve, 2D electro-hydraulic proportional valve and 2D electro-hydraulic reversing valve, in recent years It has obtained answering extensively in the fields such as aerospace, military issue weapons, ship, large-scale power station, steel, Material Testing Machine and shake table With.The especially high Core Superiority of its power-weight ratio, and the special welcome by Subscriber Units such as military project and aerospaces.
Electromechanical conversion element is as the core element converted between mechanical energy and electromagnetic energy, and performance quality is for valve Static and dynamic performance have a significant impact.Traditional electromagnetic type electromechanical converter mainly has moving-coil type and two kinds of moving-iron type.Moving-coil The linearity of formula force motor is good, magnetic hysteresis influences that small, impulse stroke is long, but its power-weight ratio is small, and when energization often exists serious Heating problem.The rotor assembly inertia such as moving-iron type such as Nozzle flapper valve and jet pipe torque-motor is small, and dynamic response is high, but Be it is influenced by air gap variation and material hysteresis, output characteristics it is non-linear more serious, stroke is smaller, and furthermore its work is in milliampere Under grade electric current, output torque very little.Another common moving-iron type electromechanical converter is proportion electro-magnet, impulse stroke Long, thrust is larger, is easy to be made into wet structures, the disadvantage is that armature component inertia is larger, dynamic response is low, and easy when straight drive spool By friction effects.In addition, with the decline of high energy product permanent-magnet material production and processing cost, in electromechanical converter It is middle to use rare earth permanent-magnetic material as polarizing magnetic field source to reduce power consumption and reduce coil heat dissipation, at least for civil field, Have become a kind of more universal design method.
In order to guarantee that the electric property of electromechanical converter does not change, can operation reliably and with long-term, depending on use occasion For certain requirement is had to the Magnetic stability of permanent magnet.Usually with the magnetic property of permanent-magnet material with environment, temperature and The change rate of time indicates its stability, mainly includes thermal stability, magnetic stability, chemical stability and time stability Deng wherein thermal stability is a most key index, and (as the temperature rises, permanent magnetism is usually indicated with Curie temperature Body magnetic property gradually declines, and when rising to a certain temperature, the intensity of magnetization disappears, which is known as Curie's temperature of the permanent-magnet material Degree).For the rare earth permanent-magnetic material having a large capacity and a wide range in the industry at this stage, the Curie temperature of Nd-Fe-B permanent magnet material is lower (about 150 DEG C), it is improper to be used under high temperature applicationss;Although and rare earth cobalt permanent magnets Curie temperature is higher that (about 710 arrive 880 DEG C), but since cobalt is strategic data, price costly, greatly improves electricity-mechanical transducer manufacturing cost.Cause This, for comprehensively considering, the electromechanical converter using permanent magnet as excitation mechanism is influenced due to being demagnetized by high temperature, no It is suitble to the temperature changes range such as military project and aerospace is larger, higher to reliability requirement crucial occasion uses.
In addition, whether electromechanical converter allows to be immersed in oil liquid and is divided into two class of dry type and wet type according to armature, Wet type electromechanical converter is able to cancel the dynamic sealing on the intrinsic valve rod of dry construction due to its high pressure resistant design, improves The functional reliability of valve;Armature can be immersed in oil liquid when working, and oil liquid can recycle the partial heat for taking away yoke and armature, Play the role of improving heat dissipation;But also noise is small when Vavle switching, stable working was extended using the longevity for the damping effect of oil liquid Life.Therefore, the high-performance electromechanical converter for having wet type high-voltage resistance capability is always research emphasis and developing direction.
Summary of the invention
It is uncomfortable to solve to be influenced as the electromechanical converter of excitation mechanism due to being demagnetized by high temperature using permanent magnet It closes and goes the temperature changes range such as military project and aerospace is larger, higher to reliability requirement crucial occasion uses Electricity, the utility model provide a kind of four magnetic pole bidirectional electromagnet of wet type based on electrical excitation, are suitable as 2D electro hydraulic on-off valve Electromechanical transducer.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
Four magnetic column type electromagnet of wet type based on electric excitation, including pedestal 2, shell 13, pedestal 2 and shell 13 enclose Inner cavity, it is characterised in that: armature shaft 1 pass through the center of pedestal 2, the centre bore of armature 5, latch segment 17 centre bore, armature 5 with With the connection of armature locking nut 6 between latch segment 17;Armature 5 with armature shaft 1 can connect in a manner of relative rotation and axial movement It connects, reset spring 18 is housed between armature 5 and pedestal 2;
Bobbin 10 and control coil 15 are respectively arranged on four conducting magnetic columns 8, one end of conducting magnetic column 8 is threadingly fixed On pedestal 2, opposite conducting magnetic column 8 forms one group two-by-two in four conducting magnetic columns 8, wherein the other end of first group of conducting magnetic column 8 is solid It is scheduled on magnetizer 14, the other end of another group of conducting magnetic column 8 is fixed on lower magnetizer 11;Four conducting magnetic columns 8 both pass through close Plate 9 is covered, has sealing device between seal cover board 9 and shell 13 and between seal cover board 9 and four conducting magnetic columns 8, is sealed Inner cavity is divided into comprising upper magnetizer 14, the seal chamber of lower magnetizer 11 and comprising the low pressure oil pocket of armature 5 by cover board 9;
There is the first cambered surface 51 and the second magnetic conduction that the first magnetic air gap is cooperatively formed with the first conducting magnetic column 81 on armature 5 Column 82 cooperatively forms the second cambered surface 52 of the second magnetic air gap, cooperatively forms the third of third magnetic air gap with third conducting magnetic column 83 Cambered surface 53, the 4th cambered surface 54 that the 4th magnetic air gap is cooperatively formed with the 4th conducting magnetic column 84;When electric current is zero in control coil 15 When, under action of reset spring, armature 5 is in initial position, i.e., the maximum functional gap position of armature 5 at this time pedestal 2 One positioning surface 21 is contacted with armature 5;When being passed through electric current in control coil 15, armature 5 is in operating position, i.e., armature 5 is by electricity The driving of magnetic force overcomes the resistance exercise of reset spring 18 to minimum working gas gap position, at this time the second positioning surface of pedestal 2 with Armature 5 contacts;
Two groups of control coils 15 of every group of conducting magnetic column 8 generate identical, the contrary axial magnetic field of two sizes after being powered, The upper end in two magnetic fields is connected in series conducting top upper magnetizer or lower magnetizer made of soft magnetic materials, and lower end passes through equally It is connected in series conducting for armature 5 made of soft magnetic materials, forms the magnetic circuit of a closure,
For the tool of armature 5 there are six rotor, four conducting magnetic columns 8 pass through the gap between rotor respectively, wherein four rotations The wing is respectively equipped with the first cambered surface 51, the second cambered surface 52, third cambered surface 53, the 4th cambered surface 54, between another two rotor and pedestal 2 Equipped with reset spring 18.
The utility model proposes four magnetic pole bidirectional electromagnet of wet type mainly by control coil, conducting magnetic column, armature, yoke, The parts such as reset spring, pedestal, shell composition.Its structural principle as shown in Figure 1: when being passed through electric current in two control coils, Conducting magnetic column in control coil and coil will generate stable magnetic field, and magnetic field caused by two magnetic poles passes through yoke and armature Form a concatenated closed magnetic circuit, working gas gap of the magnetic line of force of closure across conducting magnetic column and armature, to drive rank Iron rotation, until being contacted with conducting magnetic column.When being passed through electric current is zero, the conducting magnetic column made of soft magnetic materials can disappear rapidly Magnetic, armature return to original position under the action of reset spring.It can make armature by the way that two groups of different magnetic pole coils are separately energized It is rotated from zero-bit to side clockwise or both direction counterclockwise, thus reach the spool Double-directional rotary control of 2D electro hydraulic on-off valve Effect.
The control coil, which is directly wound on conducting magnetic column, forms magnetic pole, and the top of every two magnetic pole is mounted on yoke side by side It on iron and is secured with nuts, shares two groups of magnetic poles;Electromagnet at work, two magnetic poles installed side by side on same magnetic inductive block Control coil in the size of current led to it is equal, contrary, magnetic direction caused by such magnetic pole will mutually shape instead At series connection, the upper end of one of magnetic pole is the pole N, and lower end is the pole S;The upper end of another magnetic pole be the pole S, lower end be the pole N, two Magnetic field caused by magnetic pole passes through yoke mutual conduction.Wherein yoke is a rectangle magnetic conductive metal in homogeneous thickness, and upper There are two symmetrical step shrinkage pools for face processing, are in close contact by the top with magnetic pole magnetic field is connected, by two magnetic poles Generated magnetic field is together in series to form the field circuit of a closure.
One magnetic circuit be connected in upper end and yoke formation of two magnetic poles, and then pass through armature and working gas gap structure in lower end At a closed circuit.Wherein armature is cross-shaped configuration, is connected by intermediate bellmouth with armature shaft, can be the bottom of relative to Seat rotates in small angle range.When original state, armature is located at initial position, keeps under the action of reset spring on both sides Equilibrium state can be there are certain working gas gap between two arc-shaped curved surfaces of cross armature and the outer surface of conducting magnetic column It is rotated clockwise or counterclockwise under the action of magnetic field force.After wherein one group of control coil to two groups of magnetic poles is powered, two Magnetic field mutual conduction caused by coil, and the working gas gap across armature and conducting magnetic column forms the magnetic circuit of a closure, Armature rotates under the action of a magnetic force, until being in contact with the outer surface of two conducting magnetic columns.
The beneficial effects of the utility model are mainly manifested in:
1. the electromagnet that the utility model is proposed by the way of electrical excitation, is effectively prevented using permanent magnet excitation Product by the integrity problem that is caused of high temperature demagnetization phenomenon, be suitble to the important events such as military project and aerospace to use.
2. the electromagnet that the utility model is proposed has wet type high-voltage resistance capability: it uses O-ring seals to hold rotor Chamber is sealed, so that oil liquid is able to enter rotor chamber, becomes the high voltage bearing electromechanical converter of wet type.It is this Using the high pressure resistant design method of the wet type of O-ring seal, for the welded seal compared to conventional proportional electromagnet, it is not necessarily to Welder Sequence also reduces cost.
3. the electromagnet that the utility model is proposed compared to other kinds of electromechanical transducer have structure it is simple, zero Two magnetic poles of the advantages of part negligible amounts, core are versatile and easy to process, so that the processing cost of entire electromagnet It is relatively low.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of four magnetic pole bidirectional electromagnet of wet type;
Fig. 2 show the Primary magnetic circuit element installation diagram of four magnetic pole bidirectional electromagnet of wet type;
Fig. 3 show the cross-sectional view of the structure of four magnetic pole bidirectional electromagnet of wet type;
Fig. 4 show the structural schematic diagram of the upper magnetizer 14 of four magnetic pole bidirectional electromagnet of wet type;
Fig. 5 show the structural schematic diagram of the lower magnetizer 11 of four magnetic pole bidirectional electromagnet of wet type;
Fig. 6 is the structural schematic diagram of the conducting magnetic column 8 of four magnetic pole bidirectional electromagnet of wet type;
Fig. 7 is the structural schematic diagram of the bobbin 10 of four magnetic pole bidirectional electromagnet of wet type;
Fig. 8 is the structural schematic diagram of the seal cover board 9 of four magnetic pole bidirectional electromagnet of wet type;
Fig. 9 is the structural schematic diagram of the armature 5 of four magnetic pole bidirectional electromagnet of wet type;
Figure 10 is the structural schematic diagram of the armature latch segment 17 of four magnetic pole bidirectional electromagnet of wet type;
Figure 11 is the structural schematic diagram of the pedestal 2 of four magnetic pole bidirectional electromagnet of wet type;
Figure 12 is the structural schematic diagram of the shell 13 of four magnetic pole bidirectional electromagnet of wet type;
Figure 13 is the armature operating position sectional view of four magnetic pole bidirectional electromagnet of wet type.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Four magnetic column type electromagnet of wet type based on electric excitation, including pedestal 2, shell 13, pedestal 2 and shell 13 enclose Inner cavity, it is characterised in that: armature shaft 1 pass through the center of pedestal 2, the centre bore of armature 5, latch segment 17 centre bore, armature 5 with With the connection of armature locking nut 6 between latch segment 17;Armature 5 with armature shaft 1 can connect in a manner of relative rotation and axial movement It connects, reset spring 18 is housed between armature 5 and pedestal 2;
Bobbin 10 and control coil 15 are respectively arranged on four conducting magnetic columns 8, one end of conducting magnetic column 8 is threadingly fixed On pedestal 2, opposite conducting magnetic column 8 forms one group two-by-two in four conducting magnetic columns 8, wherein the other end of first group of conducting magnetic column 8 is solid It is scheduled on magnetizer 14, the other end of another group of conducting magnetic column 8 is fixed on lower magnetizer 11;Four conducting magnetic columns 8 both pass through close Plate 9 is covered, has sealing device between seal cover board 9 and shell 13 and between seal cover board 9 and four conducting magnetic columns 8, is sealed Inner cavity is divided into comprising upper magnetizer 14, the seal chamber of lower magnetizer 11 and comprising the low pressure oil pocket of armature 5 by cover board 9;
There is the first cambered surface 51 and the second magnetic conduction that the first magnetic air gap is cooperatively formed with the first conducting magnetic column 81 on armature 5 Column 82 cooperatively forms the second cambered surface 52 of the second magnetic air gap, cooperatively forms the third of third magnetic air gap with third conducting magnetic column 83 Cambered surface 53, the 4th cambered surface 54 that the 4th magnetic air gap is cooperatively formed with the 4th conducting magnetic column 84;When electric current is zero in control coil 15 When, under action of reset spring, armature 5 is in initial position, i.e., the maximum functional gap position of armature 5 at this time pedestal 2 One positioning surface 21 is contacted with armature 5;When being passed through electric current in control coil 15, armature 5 is in operating position, i.e., armature 5 is by electricity The driving of magnetic force overcomes the resistance exercise of reset spring 18 to minimum working gas gap position, at this time the second positioning surface of pedestal 2 with Armature 5 contacts;
Two groups of control coils 15 of every group of conducting magnetic column 8 generate identical, the contrary axial magnetic field of two sizes after being powered, The upper end in two magnetic fields is connected in series conducting top upper magnetizer or lower magnetizer made of soft magnetic materials, and lower end passes through equally It is connected in series conducting for armature 5 made of soft magnetic materials, forms the magnetic circuit of a closure,
For the tool of armature 5 there are six rotor, four conducting magnetic columns 8 pass through the gap between rotor respectively, wherein four rotations The wing is respectively equipped with the first cambered surface 51, the second cambered surface 52, third cambered surface 53, the 4th cambered surface 54, between another two rotor and pedestal 2 Equipped with reset spring 18.
The structure principle chart of the utility model is as shown in Figure 1, by armature shaft 1, pedestal 2, chassis outer side O-ring seal 3, two A spring set screw 4,5, two, the armature magnetic pole O-ring seal of spool lock-screw 6, four, 7, four conducting magnetic columns 8, sealing 14, four groups of 9, four bobbins 10 of cover board, 11, four fixture nuts 12 of lower magnetizer, shell 13, upper magnetizer control coils 15,17, two O-ring seal 16, spool latch segment reset springs 18 etc. form on the outside of seal cover board.
Wherein, be separately installed with four bobbins 10 and four groups of control coils 15 on four conducting magnetic columns 8, lower end respectively with The mode of screw thread is mounted on pedestal 2, and upper end is connected by upper magnetizer 14 and lower magnetizer 11 two-by-two and respectively by four Nut 12 is fixed.The centre of four conducting magnetic columns 8 is equipped with a seal cover board 9, and mounting hole between the two is built-in, and there are four O-shaped The O-ring seal 16 of 9 outer ring of sealing ring 7 and seal cover board is combined for obstructing oil liquid, so that entire electromechanical transducer Inner cavity is separated into two parts of dry and wet.Wherein the top of bore seal cover board is seal chamber, and lower part is then to be designed using wet type Low pressure oil pocket contains the parts such as armature shaft 1, latch segment 17, armature 5 and spring return mechanism.Armature shaft 1 then passes through on pedestal Mounting hole and be in contact by the circular conical surface on axis with the bellmouth of latch segment 17, two under the action of two lock-screw 6 Person mutually fixes.Fixed armature 5 can be rotated and be moved axially between four conducting magnetic columns 8 with armature shaft 1;Armature 5 and pedestal 2 Between dress there are two reset spring 18, when electric current is zero in four groups of control coils 15, armature 5 is mutual in two reset springs Under effect, it is in initial position, i.e. the maximum functional gap position of armature.One is kept between armature 5 and four conducting magnetic columns 8 at this time Fixed distance;It is passed through certain electric current in the two groups of control coils placed as diagonal line, two will be generated in conducting magnetic column 8 The opposite series field of the size same direction, to attract the rotation of armature 5 in operating position;That is driving of the armature by electromagnetic force Overcome reset spring resistance exercise to minimum working gas gap position, the curved surface of armature 5 can be with two magnetic conductions in generation magnetic field at this time The surface of column 8 is in contact, and operating position sectional view is as shown in Figure 13.
The Primary magnetic circuit element installation diagram of four magnetic pole bidirectional electromagnet of wet type is as shown in Fig. 2, by four groups of control coils 15, four A conducting magnetic column 8, armature 5, upper magnetizer 14, lower magnetizer 11 are constituted.Armature 5 can be according to the difference of loading current mode along suitable Hour hands rotate counterclockwise.At work, the coil 15 given on two groups of conducting magnetic columns 8 of the connection of magnetizer 14 is powered Afterwards, identical, the contrary axial magnetic field of two sizes can be generated on two conducting magnetic columns 8, the upper end in two magnetic fields passes through top The upper magnetizer 14 made of soft magnetic materials is connected in series conducting, and lower end is connected in series being similarly armature 5 made of soft magnetic materials Conducting, forms the magnetic circuit of a closure, and the magnetic line of force caused by two groups of coils passes through upper magnetizer 14 and the lower end of upper end respectively Armature 5 be connected in series, be at maximum functional gap position when two cambered surfaces of armature 5 are far from two conducting magnetic columns 8, this When control coil in be passed through a constant current, the magnetic line of force can pass through working gas gap and by armature 5, and armature 5 can be in electromagnetic force at this time Under the action of be rotated in a clockwise direction, two cambered surface can be in contact with two conducting magnetic columns 8 respectively reaches minimum work gas Gap position;When the electric current of load is zero, armature 5 can rapidly return back to initial position under the action of two reset spring 18.Together Reason, after giving the coil 15 on two groups of conducting magnetic columns 8 that lower magnetizer 11 couples and being powered, the string that is formed on two conducting magnetic columns 8 Connection magnetic field can attract armature to be rotated in the counterclockwise direction, so that two conducting magnetic columns 8 that the curved surface of armature couples with lower magnetizer 11 Cylindrical surface be in contact, reach minimum working gas gap position.
The electromagnet that the utility model is proposed has wet type high-voltage resistance capability: it uses O-ring seals to rotor cavity It is sealed, so that oil liquid is able to enter rotor chamber, becomes the high voltage bearing electromechanical converter of wet type.It is this to adopt With the high pressure resistant design method of the wet type of O-ring seal, for the welded seal compared to conventional proportional electromagnet, it is not necessarily to Welder Sequence also reduces cost.Fig. 3 show its cross-sectional view of the structure: seal cover board 9 passes through the sealing ring 16 of outer ring and leads with four Space inside shell 13 is divided into two parts up and down by the sealing ring 7 between magnetic pole 8;The wherein top half of seal cover board 9 For seal chamber, four sets of coils 15 and upper magnetizer 14, lower magnetizer 11 are all intracavitary at this.And the lower half portion of seal cover board 9 is Low pressure oil pocket allows the part to enter low pressure oil liquid, to be able to cancel the dynamic sealing on the intrinsic valve rod of dry construction, mentions The high functional reliability of valve, but also noise is small when commutation Vavle switching, stable working extends use for the damping effect of oil liquid Service life.
It is respectively upper magnetizer 14, lower magnetizer shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 and Figure 12 11, the structural schematic diagram of conducting magnetic column 8, bobbin 10, seal cover board 9, armature 5, armature latch segment 17, pedestal 2, shell 13.Its The groove of mounting O-shaped sealing ring is had in the outer ring of middle seal cover board 9 and four conducting magnetic column mounting holes.It is provided on armature 5 Two shrinkage pools are mainly used to limit the position of reset spring, and one end of spring is mounted in the shrinkage pool of armature, and the other end is mounted on On pedestal, and the pre compressed magnitude of two reset springs is adjusted by two positioning screws on pedestal respectively.
The structure of pedestal 2 is as shown in figure 11, above there are four the mounting hole of conducting magnetic column, the mounting hole of armature shaft, two limits Position spring and positioning screw mounting hole, pedestal lower end circular outside there are one O-ring seal mounting groove, play and The effect sealed between shell.
Content described in this specification embodiment is only an enumeration of the implementation forms of the utility model concept, this is practical new The protection scope of type should not be construed as being limited to the specific forms stated in the embodiments, the protection scope of the utility model also and In those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.

Claims (2)

1. a kind of four magnetic column type electromagnet of wet type based on electrical excitation, including pedestal (2), shell (13), pedestal (2) and shell (13) inner cavity is enclosed, it is characterised in that: armature shaft (1) passes through centre bore, the latch segment at the center of pedestal (2), armature (5) (17) centre bore is connect between armature (5) and latch segment (17) with armature locking nut (6);Armature (5) is with can relative rotation It is connect with the mode of axial movement with armature shaft (1), reset spring (18) is housed between armature (5) and pedestal (2);
Bobbin (10) and control coil (15) are respectively arranged on four conducting magnetic columns (8), one end of conducting magnetic column (8) is threadingly It is fixed on pedestal (2), opposite conducting magnetic column (8) forms one group two-by-two in four conducting magnetic columns (8), wherein first group of conducting magnetic column (8) the other end is fixed on magnetizer (14), and the other end of another group of conducting magnetic column (8) is fixed on lower magnetizer (11); Four conducting magnetic columns (8) both pass through seal cover board (9), between seal cover board (9) and shell (13) and seal cover board (9) with four There is sealing device between conducting magnetic column (8), inner cavity is divided into comprising upper magnetizer (14), lower magnetizer by seal cover board (9) (11) seal chamber and the low pressure oil pocket comprising armature (5);
Have on armature (5) and cooperatively forms the first cambered surface (51) of the first magnetic air gap with the first conducting magnetic column (81), led with second Magnetic pole (82) cooperatively forms the second cambered surface (52) of the second magnetic air gap, cooperatively forms third magnetic circuit gas with third conducting magnetic column (83) The third cambered surface (53) of gap, the 4th cambered surface (54) that the 4th magnetic air gap is cooperatively formed with the 4th conducting magnetic column (84);Work as control line When electric current is zero in circle (15), under action of reset spring, armature (5) is in initial position, i.e. the maximum functional gas of armature (5) The first positioning surface (21) of gap position pedestal (2) at this time is contacted with armature (5);When being passed through electric current in control coil (15), rank Iron (5) is in operating position, i.e. armature (5) is overcome the resistance exercise of reset spring (18) to work to minimum by the driving of electromagnetic force Gap position, the second positioning surface of pedestal (2) is contacted with armature (5) at this time;
Two groups of control coils (15) of every group of conducting magnetic column (8) generate identical, the contrary axial magnetic field of two sizes after being powered, The upper end in two magnetic fields is connected in series conducting top upper magnetizer or lower magnetizer made of soft magnetic materials, and lower end passes through equally It is connected in series conducting for armature made of soft magnetic materials (5), forms the magnetic circuit of a closure.
2. the four magnetic column type electromagnet of wet type based on electrical excitation as described in claim 1, it is characterised in that: the armature (5) there are six rotors for tool, and four conducting magnetic columns (8) pass through the gap between rotor respectively, wherein four rotors are respectively equipped with first Cambered surface (51), the second cambered surface (52), third cambered surface (53), the 4th cambered surface (54), equipped with multiple between another two rotor and pedestal (2) Position spring (18).
CN201820539303.4U 2018-04-16 2018-04-16 A kind of four magnetic column type electromagnet of wet type based on electrical excitation Withdrawn - After Issue CN208722671U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108447647A (en) * 2018-04-16 2018-08-24 浙江工业大学 A kind of four magnetic pole bidirectional electromagnet of wet type based on electrical excitation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108447647A (en) * 2018-04-16 2018-08-24 浙江工业大学 A kind of four magnetic pole bidirectional electromagnet of wet type based on electrical excitation

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