CN209562366U - Single-phase rotational rate electromagnet based on hybrid air gap - Google Patents
Single-phase rotational rate electromagnet based on hybrid air gap Download PDFInfo
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- CN209562366U CN209562366U CN201920127671.2U CN201920127671U CN209562366U CN 209562366 U CN209562366 U CN 209562366U CN 201920127671 U CN201920127671 U CN 201920127671U CN 209562366 U CN209562366 U CN 209562366U
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- air gap
- spring
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- 230000009467 reduction Effects 0.000 claims abstract description 12
- 230000004907 flux Effects 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 12
- 230000005284 excitation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 241000345998 Calamus manan Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000012950 rattan cane Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
A kind of single-phase rotational rate electromagnet based on hybrid air gap, the front and back side of stator are separately installed with drive end bearing bracket, rear end cap, and rotor is equipped in stator, output shaft is housed on rotor, exports axis connection reduction torsion spring；The stator is made of front stator and rear stator, and front stator and rear track ring even circumferential are distributed N number of magnetic pole of the stator；Front stator, rear stator are provided with symmetrical groove along interface respectively, and split forms annular groove, and annular groove places control coil, form control magnetic flux；The radially even rotor magnetic pole that N number of dentation is distributed with of rotor, each rotor magnetic pole end face consist of two parts, and first part is circular arc annular surface, with stator pole group radially air gap；Second part is rectangular surfaces, is located at flank of tooth end, forms axial air-gap with magnetic pole of the stator side.The utility model can be obtained close to horizontal torque angle displacement characteristic curve.
Description
Technical field
The utility model relates to a kind of rotary-type ratio electromagnets.
Background technique
Rotary valve is a kind of relative position for changing spool, valve pocket using rotary motion, changes the flow path inside rotary valve, most
The reversal valve of flow path opening and closing or commutation is realized eventually.Rotary valve can be by manual, machine driving or directly by motor, motor and rotation
Solenoid actuated, to realize accurate servo/ratio control.Compared with slide valve or cone valve, rotary valve has high reliablity, structure letter
The advantages that list, working frequency are high, oil resistant liquid pollution capacity is strong can be widely applied to high-speed switch, high speed exciting, high speed and commutate
In hydraulic system, especially when the throttling slot number of spool valve pocket is more, single-stage rotary valve can obtain also bigger than multiple valve spools
Metered flow.However in existing electro-hydraulic servo/ratio control system, it is extensive that the application of rotary valve but can not show a candle to slide valve.It canvasses
Its reason, first is that the throttling channel of rotary valve/window processing is complex, second is that being used to drive the rotating electromagnet of rotary valve to obtain ratio control
Much more difficult than direct action type proportional electromagnet of characteristic processed, the latter is by using a magnetism-isolating loop structure, and magnetic circuit is in magnetism-isolating loop when excitation
Punishment is two-way axially and radially, the required horizontal throw-thrust performance of ratio control can be obtained after synthesis, although magnetic conduction
The welding of set is relatively complicated, but is not what big problem for high-volume automated production, and rotating electromagnet is often
Design is specifically optimized to stator tooth and rotor tooth shape could obtain relatively flat torque-corner characteristic, this is with regard to big
Its practical application is limited greatly.
For the promotion and application rotary valve in electro-hydraulic servo/ratio system, Magnetic circuit topologies knot of the people in rotating electromagnet
Numerous studies have been done in structure and torque angle displacement characteristic optimization.Widely applied torque is obtained in Nozzle flapper valve and jet pipe servo valve
Motor can also obtain the position control characteristic of ratio by the rational design to elastic element, but since its magnetic circuit is based on axis
To air gap, it is difficult to obtain biggish operating angle.AM General detect company Montagu propose based on radial working gas gap
Modified torque-motor expand its Work-corner range further, and itself have positive ELECTROMAGNETIC STIFFNESS, Ke Yi
Proportional positions control characteristic is obtained in the case where not additional elastic element.In order to obtain flat torque angle displacement characteristic curve, Hitachi is public
Permanent magnetism shape on designed moving-magnetic type torque-motor rotor has been made special designing by the Fumio of department, and pole-face is radially cut
It is fluted and insert non-magnet material, adjoint torque pulsation when compensating rotor rotation with this.Japanese denso company into
The magneto torque-motor of two youth of rattan design, two magnetic poles being made of discrete permanent magnet are non-in a manner of differing half of magnetic pole angle
It is arranged symmetrically in the outside of shaft, the torque pulsation as caused by polygon magnetic pole periphery is compensated with this, to obtain steady
Torque-corner characteristic.The electrical excitation torque-motor of the developments such as Zhejiang University Zhang Guangqiong, to the shape of magnetic pole of the stator and rotor pole faces
Shape has carried out special designing, changes the torque angle displacement characteristic of motor by the magnetic flux degree of saturation at control stator magnet tip of pole shoe.Cui
Sword et al. proposes a kind of moving-magnetic type rotational rate electromagnet based on radial working gas gap, based on differential magnetic circuit and has positive electricity
Magnetic rigidity, but structure is complex, is unfavorable for industrial applications and large-scale serial production.
Summary of the invention
In order to overcome existing rotating electromagnet to obtain horizontal moment-, corner characteristic is difficult, structure is complicated and is unfavorable for work
Industryization is applied and the shortcomings that large-scale serial production, the utility model provide it is a kind of it is based on hybrid air gap, with horizontal force
The simply single-phase rotating electromagnet of square-corner characteristic, structure.
The basic principle of the utility model is as follows: common working gas gap has radial gas in rotary electromechanical converter
Gap and two kinds of axial air-gap, radial air gap can have biggish Work-corner, but as (rotor is gradually right for the increase of error angle
Together), output torque can reduce, i.e., its torque angle displacement characteristic slope of a curve is negative；And axial air-gap working range is relatively narrow, but power output
Square increases with the increase of error angle, i.e., its torque angle displacement characteristic slope of a curve is positive.Therefore, the working gas gap of the utility model
It is divided into two parts, groundwork air gap is radial air gap, increases an axial air-gap on the basis of radial air gap.Radial air gap
The torque phase inter-modulation generated with axial air-gap is obtained with bent close to horizontal torque angle displacement characteristic by reasonable parameter optimization
Line is obtained with the position control characteristic of ratio after additional reduction torsion spring.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of single-phase rotating electromagnet based on mixing air gap, the front and back side of stator is separately installed with drive end bearing bracket 1, rear end cap
5, rotor 7 is installed in stator, output shaft 6 is housed on rotor 7, output shaft 6 connects reduction torsion spring 4.The stator is by preceding fixed
Son 2 and rear stator 3 form, and front stator 2 and 3 ring even circumferential of rear stator are distributed N number of magnetic pole of the stator 21, are conducive to increase power output
Square.Front stator 2, rear stator 3 are provided with symmetrical groove along interface respectively, and split forms annular groove 22, and annular groove 22 places control
Coil 8 processed forms control magnetic flux.
The radially even rotor magnetic pole that N number of dentation is distributed with of rotor 7, each rotor magnetic pole end face consist of two parts,
First part is circular arc annular surface 71, forms radial air gap with magnetic pole of the stator 21.Second part is rectangular surfaces 72, is located at tooth
Face end forms axial air-gap with 21 side of magnetic pole of the stator.
Preferably, reduction torsion spring 4 includes spring 41 and spring bumper cover 42, shaft coupling 43, and spring bumper cover 42 connects rear end cap
5, spring 41 is mounted on spring bumper cover 42, and shaft coupling 43 is mounted on spring 41, and the rear end of output shaft 6 is fixed in shaft coupling
In 43 centre bore.Output shaft 6 is fixed on rotor 7.After rotary torque-motor rotates clockwise and anticlockwise, due to power
Square motor does not have spring rate characteristic, needs additional reduction torsion spring 4 that rotor 7 is made to return to middle position.
Preferably, 8 magnetic pole of the stator of front stator 2 and the distribution of 3 ring even circumferential of rear stator, each magnetic pole of the stator are separated by
45 °, the radially even rotor magnetic pole that 8 dentations are distributed with of rotor 7.
Preferably, rotor 7 uses drag cup structure, reduces rotary inertia, is conducive to increase response speed.The drive end bearing bracket
1 and rear end cap 5 and output shaft 6 be made of non-magnetic metal material, and rotor 7 and front stator 2, rear stator 3 use high permeability
Metal soft magnetic material be made.
The beneficial effects of the utility model are mainly manifested in:
1. obtaining horizontal torque-corner characteristic using hybrid working gas gap.The working gas gap of the utility model is divided into
Two parts, groundwork air gap are radial air gap, increase an axial air-gap on the basis of radial air gap.Radial air gap and axis
The torque phase inter-modulation generated to air gap, is obtained with by reasonable parameter optimization close to horizontal torque angle displacement characteristic curve,
The position control characteristic of ratio is obtained with after additional reduction torsion spring.
2. fast response time, output torque are big.It is columnar structured compared to other rotary-type ratio electromagnet rotors,
Its rotor of scheme provided by the utility model is drag cup structure, and rotary inertia is small, help to obtain higher dynamic response speed
Degree.It is designed using more field structures, is conducive to promote output torque.
3. using unicoil excitation, control is simple.Compared to two-phase excitation structure, drive is can be effectively reduced in unicoil excitation
The complexity of dynamic circuit, controls more simple.
4. structure is simple, at low cost.Compared to other rotary-type ratio electromagnets, scheme zero provided by the utility model
Number of components is few, and processing, assembly are relatively easy to, and manufacturing cost is low, is conducive to industrialized practical application and extensive batch
Amount production.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model；
Fig. 2 is the assembling schematic diagram of the utility model
Fig. 3 is the stator structure schematic diagram of the utility model；
Fig. 4 is the rear end cover structure schematic diagram of the utility model；
Fig. 5 is the reduction torsion spring structural schematic diagram of the utility model；
Fig. 6 is the drive end bearing bracket structural schematic diagram of the utility model；
Fig. 7 is the output shaft structural schematic diagram of the utility model；
Fig. 8 is the rotor structure schematic diagram of the utility model；
Fig. 9 is radial air gap, axial air-gap and the torque angle displacement characteristic curve synoptic diagram for mixing air gap；
Figure 10 is the principle schematic diagram of the utility model.
Figure 11 is the operation principle schematic diagram of the utility model, and control coil is passed through forward current.
Figure 12 is the operation principle schematic diagram of the utility model, and control coil is passed through reverse current.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Referring to Fig.1~Fig. 8, a kind of single-phase rotating electromagnet based on mixing air gap, the front and back side of stator is separately installed with
Drive end bearing bracket 1, rear end cap 5 are equipped with rotor 7 in stator, output shaft 6 are housed on rotor 7, and output shaft 6 connects reduction torsion spring 4.
The stator of the utility model is made of front stator 2 and rear stator 3,8 magnetic pole of the stator 21, Mei Geding on every piece of stator
Sub- magnetic pole 21 be separated by 45 ° with distribution circumferentially, be conducive to promoted output torque.Front stator 2, rear stator 3 are respectively along boundary
Face is provided with symmetrical groove, forms annular groove 22, places control coil 8 in annular groove, form control magnetic flux.
The rotor part is made of output shaft 6 and rotor 7, the radially even rotor that 8 dentations are distributed with of rotor 7
The increment face of magnetic pole, each rotor magnetic pole consists of two parts, and first part 71 is circular arc annular surface, with magnetic pole of the stator 21
Radial end face forms radial air gap.Second part 72 is rectangular surfaces, is located at increment face end, the side group with magnetic pole of the stator 21
At axial air-gap.The drive end bearing bracket 1, rear end cap 5 and output shaft 6 are made of non-magnetic metal material, and rotor 7 and front stator
2, the metal soft magnetic material of the rear high permeability of stator 3 is made.
The reduction torsion spring includes spring 41 and spring bumper cover 42, shaft coupling 43, and spring bumper cover 42 connects rear end cap 5, bullet
Spring 41 is mounted on spring bumper cover 42, and shaft coupling 43 is mounted on spring 41, and the rear end of output shaft 6 is fixed in shaft coupling 43
In heart hole.Output shaft 6 is fixed on rotor 7.After rotary torque-motor rotates clockwise and anticlockwise, due to torque horse
Up to not having spring rate characteristic, need additional reduction torsion spring 4 that rotor 7 is made to return to middle position.
As shown in Figure 10, when 8 no power of control coil, there is no magnetic flux in air gap, under the action of reduction torsion spring 4, turn
Son 7 is in the initial position of middle position.
When control coil 8 is passed through the electric current as shown in Figure 11, Figure 12, control coil 8 generate control magnetic flux, rotor 7 by
It is rotated clockwise to electromagnetic torque effect, the torque phase inter-modulation that radial air gap and axial air-gap respectively generate at this time, so that electric
Magnet obtains the torque angle displacement characteristic of almost horizontal, and the size of output torque can be by the big minor adjustment of control electric current, and cooperation is linear
The position control effect proportional to electric current can be obtained when spring use.
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 (4)
1. a kind of single-phase rotational rate electromagnet based on hybrid air gap, it is characterised in that: install respectively the front and back side of stator
There are drive end bearing bracket (1), rear end cap (5), be equipped with rotor (7) in stator, output shaft (6) are housed on rotor (7), output shaft (6) is even
Connect reduction torsion spring (4)；The stator is made of front stator (2) and rear stator (3), front stator (2) and rear stator (3) ring circumference
It is uniformly distributed N number of magnetic pole of the stator (21)；Front stator (2), rear stator (3) are provided with symmetrical groove, split shape along interface respectively
It circularizes slot (22), annular groove (22) places control coil (8), forms control magnetic flux；
The radially even rotor magnetic pole that N number of dentation is distributed with of rotor (7), each rotor magnetic pole end face consist of two parts, the
A part is circular arc annular surface (71), forms radial air gap with magnetic pole of the stator (21)；Second part is rectangular surfaces (72), position
In flank of tooth end, axial air-gap is formed with magnetic pole of the stator (21) side.
2. a kind of single-phase rotational rate electromagnet based on hybrid air gap as described in claim 1, it is characterised in that: reset
Torsional spring (4) includes spring (41) and spring bumper cover (42), shaft coupling (43), and spring bumper cover (42) connects rear end cap (5), spring
(41) it is mounted on spring bumper cover (42), shaft coupling (43) is mounted on spring (41), and the rear end of output shaft (6) is fixed in shaft coupling
In the centre bore of device (43), output shaft (6) is fixed on rotor (7).
3. a kind of single-phase rotational rate electromagnet based on hybrid air gap as claimed in claim 1 or 2, it is characterised in that:
8 magnetic pole of the stator (21) of front stator (2) and the distribution of rear stator (3) ring even circumferential, each magnetic pole of the stator (21) are separated by 45 °,
The radially even rotor magnetic pole that 8 dentations are distributed with of rotor (7).
4. a kind of single-phase rotational rate electromagnet based on hybrid air gap as claimed in claim 3, it is characterised in that: rotor
(7) drag cup structure is used；Drive end bearing bracket (1) and rear end cap (5) and output shaft (6) are made of non-magnetic metal material, rotor
(7) it is made with front stator (2), rear stator (3) of the metal soft magnetic material of high permeability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920127671.2U CN209562366U (en) | 2019-01-25 | 2019-01-25 | Single-phase rotational rate electromagnet based on hybrid air gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920127671.2U CN209562366U (en) | 2019-01-25 | 2019-01-25 | Single-phase rotational rate electromagnet based on hybrid air gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209562366U true CN209562366U (en) | 2019-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920127671.2U Expired - Fee Related CN209562366U (en) | 2019-01-25 | 2019-01-25 | Single-phase rotational rate electromagnet based on hybrid air gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209562366U (en) |
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2019
- 2019-01-25 CN CN201920127671.2U patent/CN209562366U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 |