CN206077184U - A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor - Google Patents
A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor Download PDFInfo
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- CN206077184U CN206077184U CN201621011127.4U CN201621011127U CN206077184U CN 206077184 U CN206077184 U CN 206077184U CN 201621011127 U CN201621011127 U CN 201621011127U CN 206077184 U CN206077184 U CN 206077184U
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- dipping lacquer
- weight ratio
- sensor
- stator
- synchronous motor
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Abstract
A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor, including stator, casing, end cap, bearing holder (housing, cover), wavy spring and rotor.Electric machine structure is simple, with higher power to weight ratio, it is adaptable to the occasion harsh to motor volume, weight demands.Insulating structure design and compound dipping paint method that stator is adopted, can under the special environments such as harsh damp and hot, mycete, salt fog, low pressure, high/low temperature steady operation.By integral type, highly reliable rotor structure, rotor can under the special mechanical environment such as high vibration, large impact high speed steady operation.Designed for zigzag bearing housing structure by cross section, can both increase mechanical strength, motor axial dimension can be effectively reduced again, reduce volume.
Description
Technical field
The present invention relates to a kind of Aero-Space, industrial servo drive field motor, and in particular to a kind of not installation site
The compound dipping lacquer of sensor/speed probe is without the high power to weight ratio permagnetic synchronous motor of sensor.
Background technology
At present, the motor product such as Aeronautics and Astronautics field can adapt to vibrate in storage and work, impact, it is damp and hot, mould
The special environments such as bacterium, salt fog, low pressure, high/low temperature, therefore the insulating properties of motor, requirement of mechanical strength are higher, while counterweight
Amount, volume and specific power require more strict.On market, below 8kW motors majority is for asynchronous machine and has the permanent magnetism of sensor same
Step motor, overall dimensions larger (generally higher than Φ 140mm × 150mm), less (generally below the 1kW/kg, containing knot of power to weight ratio
Component), work in -10 DEG C～+40 DEG C more, the class of insulation is generally F levels, and mechanical environment typically only meets GB, national military standard
Deng requiring, be not suitable for the special environment requirements such as harsher damp and hot, high temperature, harsh mechanical condition, be not suitable for yet to volume,
Weight has the system and occasion of strict restriction.
The content of the invention
The present invention technology solve problem be：Overcome the deficiencies in the prior art, propose that a kind of compound dipping lacquer is high without sensor
Power to weight ratio permagnetic synchronous motor, can be applied to the special environments such as harsher damp and hot, high temperature, harsh mechanical condition and require, with
And have the system and occasion of strict restriction to volume, weight.
The technical solution used in the present invention is：
A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor, including stator, casing, end cap, bearing holder (housing, cover), ripple
Shape spring and rotor；
Stator after compound dipping lacquer is arranged in casing, and stator and casing interference fit, and casing two ends are equipped with end cap, use
Stator in casing is protected by, and it is zigzag bearing holder (housing, cover) and end cap that the bearing of two ends of rotor diametrically passes through cross section
Link together, between the bearing and bearing holder (housing, cover) of rotor one end, be provided with wavy spring, for adjusting the axial gap of rotor.
The rotor includes rotating shaft, yoke, dividing plate, permanent magnet, protective case, baffle plate and bearing；
Yoke is coated in rotating shaft, and is annular knurl interference fit, and permanent magnet is uniformly bonded in yoke outer surface, and dividing plate is successively
In the axial notch of embedded yoke outer surface, connected by dividing plate between adjacent permanent magnet, protective case is coated at permanent magnet surfaces,
Protective case two ends are fixedly connected with baffle plate, and for preventing from being fallen off by centrifugal forces affect during permanent magnet rotating, baffle-plate-sleeve exists
In rotating shaft and two baffle plates are located at the two ends of yoke, be interference fit between one of baffle plate and rotating shaft, another baffle plate with
It is interference fits between rotating shaft.
The compound dipping lacquer of stator is specially：It is first that stator is integrally secondary with polyimides impregnating varnish vacuum pressure impregnation, then
Carry out common dipping lacquer once, finally vacuum pressure impregnation with unsaturated polyester-imide impregnating resin once.
What the present invention was brought compared with prior art has the beneficial effect that：
(1) the invention provides a kind of high power to weight ratio permagnetic synchronous motor of no-rotor position/speed probe structure, tool
There is relatively low draw ratio, it is adaptable to the occasion harsh to motor volume, weight demands.
(2) by Electric machine structure part reasonable material and structure design, motor not only has lightweight advantage, Er Qieneng
Enough it is adapted to the mechanical environment of high vibration, large impact.
(3) by integral type, highly reliable rotor structure, rotor can be in Special Forces such as high vibration, large impacts
Learn high speed steady operation under environment.
(4) as motor axially adopts cross section for zigzag bearing housing structure, mechanical strength can both have been increased, again can be effective
Reduce motor axial dimension, reduce volume.
(5) the invention provides a kind of stator insulation design of compound dipping lacquer, realizes that stator heatproof is high, hang paint amount
The highly reliable insulating properties that high, viscosity is high, three prevent and radiation resistance is excellent.Can be in harsh damp and hot, mycete, salt fog, low gas
Steady operation under the special environments such as pressure, high/low temperature.
(6) designed with stator draw ratio matched design and high copper factor by the machine winding number of turn, work in short-term can be made
Make system the motor feels hot reduce.
Description of the drawings
Fig. 1 permanent magnetic synchronous motor structure schematic diagrams of the present invention；
Fig. 2 stator structure schematic diagrams of the present invention；
Fig. 3 rotor radial generalized sections of the present invention；
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is further described in detail.
As shown in figure 1, the invention provides a kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor, including fixed
Son 1, casing 2, end cap 3, bearing holder (housing, cover) 5, wavy spring 6 and rotor 15；
Stator 1 after compound dipping lacquer is arranged in casing 2, and stator 1 and 2 interference fit of casing, and 2 two ends of casing are equipped with end
Lid 3, for being protected by the stator 1 in casing 2, casing 2 and end cap 3 select aluminum alloy materials, and carry out solid solution aging
The one-sided thickness of surface treatment, casing 2 and end cap 3 is not less than 5mm.The bearing at 15 two ends of rotor by cross section is diametrically
Zigzag bearing holder (housing, cover) 5 is linked together with end cap 3, and annular knurl interference fit is adopted when 5 outer round surface of bearing holder (housing, cover) is installed with end cap 3.Axle
Bearing sleeve 5 adopts stainless steel material, can prevent the bearing chamber deformation of motor end cap 3 in high speed, hot operation, affect bearing 14
Functional reliability, the wall thickness of bearing holder (housing, cover) 5 are not less than 3mm.Compared with common L-shaped structure, as which eliminates aluminum alloy material machine
Columella not only improves structural strength, and shortens axial dimension to bearing rib structure.The bearing and bearing of 15 one end of rotor
Wavy spring 6 is provided between set 5, for adjusting the axial gap of rotor 15.Two bearings mounting surface axial distance is less than
65mm.The electric machine structure can be applied to high frequency tolerant and vibrate (20Hz～2000Hz：25g), HI high impact (1000Hz～8000Hz：
Mechanical environment 5000g).
As shown in Fig. 2 stator 1 includes stator core 17 and winding 16, the size of stator core 17 be not more than Φ 110mm ×
40mm, volume are less than 3.71 × 10-4m3, the power of motor is 8kW, therefore power to volume ratio is not less than 2.15 × 104kg/m3,
The ratio of the draw ratio of stator core 17, i.e. length and internal diameter, less than 0.6.Little draw ratio not only reduces motor overall dimensions, and
And it is easy to radiating, it is easy to offline operation.7kg is not more than using the motor gross weight of 1 structure of stator, power to weight ratio containing structural member
1.1kW/kg is not less than, overall dimensions are not more than Φ 135mm × 110mm.Winding 16 adopt 220 DEG C of polyimides electromagnetic wires or
More than 200 DEG C rank Inverter fed motor electromagnetic wires, during rule, copper factor is not less than 70%, after rule, distance between 16 both ends of winding
Less than 82mm.Stator 1 adopts C class F insulating material Fs, and motor heatproof is not less than 200 DEG C, and heatproof is not less than 220 DEG C and (reaches C in short-term
Class B insulation).17 length matched design of 16 number of turn of winding and stator core, makes winding back emf the 80%～90% of supply voltage
Between, the electric current density of stator 1 is at utmost reduced so on the basis of supply voltage is made full use of.Set using said method
The motor of meter, 10min not higher than 100 DEG C of motor most hot spot temperature rise under full power operation in short-term.
Compound dipping lacquer is carried out to stator 1：First will be stator 1 overall secondary with polyimides impregnating varnish vacuum pressure impregnation, then
Carry out common dipping lacquer once, finally vacuum pressure impregnation with unsaturated polyester-imide impregnating resin once.Common dipping lacquer is referred to
Dipping lacquer is carried out under room temperature, normal pressure.By vacuum pressure impregnation, impregnating varnish can be filled in the fine gap inside stator 1, with
Lift high temperature resistant, the corona-resistance property of stator 1.Again with the unsaturated polyester-imide impregnating resin vacuum pressure impregnation that viscosity is higher
Once, make impregnating resin fully cover whole stator 1, prevent wet gas from entering, with lifted 1 humidity of stator, salt fog it is exhausted
Edge reliability.Stator 1 after compound dipping lacquer can adapt to damp and hot (0 DEG C～50 DEG C, 90%～100% humidity), mycete, salt fog
(5mg/m3), the special environment such as low pressure (133Pa), high/low temperature (- 40 DEG C～+80 DEG C).
As shown in figure 3, rotor 15 includes rotating shaft 7, yoke 8, dividing plate 9, permanent magnet 10, protective case 11, baffle plate 12 and bearing
14.Yoke 8 is coated in rotating shaft 7, and is annular knurl interference fit, and permanent magnet 10 is uniformly bonded in 8 outer surface of yoke, dividing plate 9 according to
In the axial notch of secondary 8 outer surface of embedded yoke, dividing plate 9 adopts interference fits, monolateral gap value to be not more than with the groove of yoke 8
0.12mm.Connected by dividing plate 9 between adjacent permanent magnet 10, protective case 11 is coated at 10 surface of permanent magnet, using small―gap suture or
Excessively coordinate, 11 two ends of protective case are fixedly connected with 12 circumference soldering of baffle plate, by centrifugal force during for preventing permanent magnet 10 from rotating
Affect and fall off, baffle plate 12 is enclosed within rotating shaft 7 and two baffle plates 12 are located at the two ends of yoke 8, one of baffle plate 12 with
It is interference fit between rotating shaft 7, prevents 10 axial float of permanent magnet.It is interference fits between another baffle plate 12 and rotating shaft 7.Every
Plate 9 adopts non-magnet_conductible material, on the one hand plays separated magnetic effect, prevents the distortion of magnetic circuit under strong magnetic environment, on the other hand, fixed permanent magnetism
The position of body 10, prevents circumferential play.Using the higher metal material of intensity, after surface treatment, hardness is not less than for rotating shaft 7
36HRC, to meet force request.Permanent magnet 10 is tile shape, from the higher samarium-cobalt material of high temperature resistant, magnetic property.Protective case
11 typically adopt non-magnet_conductible material, and, between 0.2mm～0.5mm, after installing protective case 11, rotor 15 is cylindrical with stator 1 for thickness
Monolateral gap between inner circle is 0.4～0.5mm.Protective case 11 is cylindrical can first to stay allowance, after installing with permanent magnet 10 again
Processing excircles.Rotor is made to form integral structure by material selection, interference fit, bonding, welding manner so as to excellent
Structural reliability, can adapt to the strong mechanical environment of high vibration, large impact.
Embodiment：
One is designed without sensor permagnetic synchronous motor according to the present invention, the industrial-frequency alternating current powered as 380V, 50Hz,
Power of motor is 8kW, and rotating speed is 7000r/min, using 8 pole, 36 slot structure.Motor weight is 6.9kg, and power to weight ratio is 1.16kW/
Kg, motor overall dimensions are Φ 124mm × 107mm, and stator core size is Φ 110mm × 39mm, installs turning after protective case
Sub- external diameter is Φ 69.2mm, and two bearings mounting surface distance is 63.5mm.Casing, end cap adopt wrought aluminium 2A14-T6, and machine shell single side is thick
Spend for 7mm, ending cover thickness is 9mm.Rotating shaft adopts rustless steel 40CrNiMoA, and hardness is 35～40HRC, a diameter of Φ 29mm.It is horizontal
Section adopts rustless steel 2Cr13 for the bearing holder (housing, cover) of Z-type, and wall thickness is 4.5mm.Protective case is rustless steel 1Cr18Ni9Ti, and wall thickness is
0.45mm.Stator is secondary using polyimides impregnating varnish vacuum pressure impregnation, and common dipping lacquer is once and unsaturated polyester-imide
Impregnating resin vacuum pressure impregnation is once.
1st, low frequency, high frequency, vibration test under particular frequency are carried out successively to motor, experimental condition is：
1) low frequency sinusoidal scan test condition
2) high band random vibration test condition
3) vibration test under particular frequency condition
Result of the test is：Electric current during unloaded vibration is less than 5A.Vibration rear motor has no mechanical damage and connection loosing is existing
As.The indexs such as repetition measurement, rotating speed, electric current, power are carried out to Rated motor performance and meets requirement.Repetition measurement result is：
| Motor is numbered | Operation torque | Consume electric current | Rotating speed | Power factor |
| 1 | 10N.m | 14.74A | 7006r/min | 0.98 |
| 2 | 10N.m | 14.96A | 7000r/min | 0.98 |
2nd, impact test is carried out to motor, Shock Environmental Condition (shock response spectrum Q=10) is：
After impact, motor performance meets design requirement, and structure is without damage and loosens phenomenon.
3rd, thermocycling has been carried out to motor, rated performance test has been carried out under high and low temperature environment.Experimental condition is：
| Temperature, temperature retention time | |
| High temperature (DEG C) | 60 ± 2,4h |
| Low temperature (DEG C) | - 40 ± 3,4h |
Hot test result：
| Motor is numbered | High-temperature cabinet temperature | Operation torque | Consume electric current | Rotating speed | Power factor |
| 1 | 60℃ | 10N.m | 14.90A | 6998r/min | 0.98 |
| 2 | 62℃ | 10N.m | 15.11A | 7031r/min | 0.98 |
Low-temperature test result：
4th, damp heat test has been carried out to motor, with reference to GJB4.6《Warship Electronic Equipments environmental test cyclic damp heat test》's
Requirement is carried out, the test period be 1 cycle, totally 48 hours.After test, repetition measurement motor insulation resistance, D.C. resistance are conformed to
Ask.Result of the test is：
5th, salt spray test is carried out to motor, test method is with reference to GJB150.11《Military equipment environmental test method salt fog is tried
Test》Carry out, by the way of spraying and dry cycle, according to 24h sprayings with 24h dryings alternately, a test period is
48h, carries out 4 circulations altogether.Temperature during experiment in proof box work space on any point should be maintained at 35 ± 2 DEG C.After test
Repetition measurement motor insulation resistance, D.C. resistance are satisfied by requiring.
6th, carry out low-atmospheric pressure test to motor, experimental condition is 133Pa, the persistent period is at least 10min.In pressure reduction
Under neutralization low pressure state, there is no vacuum discharge or micro discharge phenomenon in motor.
The content not being described in detail in description of the invention belongs to techniques known.
Claims (10)
1. a kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：Including stator (1), casing
(2), end cap (3), securing member (4), bearing holder (housing, cover) (5), wavy spring (6) and rotor (15)；
Stator (1) after compound dipping lacquer is in casing (2), and stator (1) and casing (2) interference fit, casing (2) two ends
Equipped with end cap (3), fastened by securing member (4), it is zigzag that the bearing at rotor (15) two ends diametrically passes through cross section
Bearing holder (housing, cover) (5) is linked together with end cap (3), is provided with wavy spring between the bearing and bearing holder (housing, cover) (5) of rotor (15) one end
(6)。
2. according to claim 1 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：Institute
Rotor (15) is stated including rotating shaft (7), yoke (8), dividing plate (9), permanent magnet (10), protective case (11), baffle plate (12) and bearing
(14)；
Yoke (8) is coated in rotating shaft (7), and is annular knurl interference fit, and permanent magnet (10) is uniformly bonded in yoke (8) appearance
Face, dividing plate (9) are sequentially embedded in the axial notch of yoke (8) outer surface, between adjacent permanent magnet (10) by dividing plate (9) even
Connect, protective case (11) is coated at permanent magnet (10) surface, and protective case (11) two ends are fixedly connected with baffle plate (12), for preventing forever
Centrifugal forces affect is received when magnet (10) is rotated and is fallen off, baffle plate (12) is enclosed within rotating shaft (7) and two baffle plates (12) are located at
The two ends of yoke (8), are interference fit, another baffle plate (12) and rotating shaft (7) between one of baffle plate (12) and rotating shaft (7)
Between be interference fits.
3. according to claim 1 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：It is fixed
The compound dipping lacquer of sub (1) is specially：It is first that stator (1) is integrally secondary with polyimides impregnating varnish vacuum pressure impregnation, then carry out
Common dipping lacquer once, finally vacuum pressure impregnation with unsaturated polyester-imide impregnating resin once.
4. according to claim 1 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：Institute
Stator (1) is stated including stator core (17) and winding (16), stator core (17) external diameter is Φ 110mm, and internal diameter is Φ 70mm, long
Spend for 39mm, the draw ratio of stator (1) is less than 0.6.
5. according to claim 4 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：Institute
Winding (16) is stated using 220 DEG C of polyimides electromagnetic wires or more than 200 DEG C rank Inverter fed motor electromagnetic wires, copper factor is not low during rule
In 70%, after rule, between winding (16) both ends, distance is less than 82mm.
6. according to claim 1 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：Machine
Shell (2) and end cap (3) select aluminum alloy materials, and carry out the monolateral of the surface treatment of solid solution aging, casing (2) and end cap (3)
Thickness is not less than 5mm.
7. according to claim 1 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：Institute
State bearing sleeve (5) and adopt stainless steel material, its wall thickness is not less than 3mm.
8. according to claim 2 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：Every
With yoke (8) using excessively cooperation, monolateral gap value is not more than 0.12mm to plate (9), and dividing plate (9) adopts non-magnet_conductible material, prevents
The distortion of magnetic circuit and permanent magnet (10) circumference play is prevented under strong magnetic environment.
9. according to claim 2 or 8 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, its feature exists
In：The permanent magnet (10) is tile shape, using samarium-cobalt material.
10. according to claim 2 a kind of compound dipping lacquer without the high power to weight ratio permagnetic synchronous motor of sensor, it is characterised in that：
The protective case (11) adopts non-magnet_conductible material, thickness between 0.2mm～0.5mm, after protective case (11) are installed, rotor (15)
It is 0.4～0.5mm with the monolateral gap between stator (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621011127.4U CN206077184U (en) | 2016-08-30 | 2016-08-30 | A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621011127.4U CN206077184U (en) | 2016-08-30 | 2016-08-30 | A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor |
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| Publication Number | Publication Date |
|---|---|
| CN206077184U true CN206077184U (en) | 2017-04-05 |
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| CN201621011127.4U Active CN206077184U (en) | 2016-08-30 | 2016-08-30 | A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404311A (en) * | 2020-04-01 | 2020-07-10 | 宁波兴泰科技有限公司 | Motor and ceiling fan |
| CN114614614A (en) * | 2022-04-06 | 2022-06-10 | 贵州海德威精密仪器有限公司 | Brushless hollow shaft motor and laser radar |
-
2016
- 2016-08-30 CN CN201621011127.4U patent/CN206077184U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404311A (en) * | 2020-04-01 | 2020-07-10 | 宁波兴泰科技有限公司 | Motor and ceiling fan |
| CN114614614A (en) * | 2022-04-06 | 2022-06-10 | 贵州海德威精密仪器有限公司 | Brushless hollow shaft motor and laser radar |
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