CN109412336A - Electric motor and controller method - Google Patents
Electric motor and controller method Download PDFInfo
- Publication number
- CN109412336A CN109412336A CN201811488107.XA CN201811488107A CN109412336A CN 109412336 A CN109412336 A CN 109412336A CN 201811488107 A CN201811488107 A CN 201811488107A CN 109412336 A CN109412336 A CN 109412336A
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- Prior art keywords
- output shaft
- rotor
- stator
- motor
- shell
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/12—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The present invention provides a kind of electric motor and controller method.Motor includes shell, stator and rotor；Stator is set in shell；Rotor is set to the radially inner side of stator；Shell has rear end cap, offers shaft end slot on rear end cap；Rotor has output shaft, and shaft end slot is inserted into the rear end of output shaft；Motor further include: Anti-moving device, Anti-moving device have primary and secondary；Primary is installed on the peripheral wall of shaft end slot, and secondary is installed on the rear end of output shaft；With play detection device, the displacement being configured between the real time position and initial position of detection output shaft with primary according to Bit andits control, and then keeps output shaft in initial position.Due to play detection device and Anti-moving device, it can be when play detection device detects that axial float occurs for output shaft, control feeds to primary electric current etc., promote the secondary opposite direction for driving output shaft play direction in the axial direction mobile, to prevent axial float, particularly, the rotation of output shaft will not be influenced.
Description
Technical field
The present invention relates to motor fields, more particularly to a kind of electric motor and controller method.
Background technique
Currently, motor in use, has a kind of special phenomenon rotor to alter axis.The rotor of motivation is scurried out stator iron
Core occurs axial displacement, is called rotor and alters axis.Under normal circumstances, stator core and the alignment of rotor core both ends or rotor are slightly shorter
In stator core.When rotor core scurries out stator core up to 5 millimeters or more, the three-phase no-load electric current of motor will obviously increase
Greatly, after taking load, stator current can be more than load current value, make motor overheating.Can issue simultaneously a burst of it is uneven but
Regular buzz.If motor rotor seriously alters axis, motor is just unable to drive load running at all.
Summary of the invention
The present invention invents at least one defect for being intended to overcome existing motor, provides a kind of electric motor and controller method,
It can prevent motor from axial float occurs as much as possible.
For this purpose, the invention proposes a kind of motor, including shell, stator and rotor；The stator is set to the shell
It is interior；The rotor is set to the radially inner side of the stator；The shell has rear end cap, offers shaft end on the rear end cap
Slot；The rotor has output shaft, and the shaft end slot is inserted into the rear end of the output shaft；It is characterized in that, the motor also wraps
It includes:
Anti-moving device, the Anti-moving device have primary and secondary；The primary is installed on the week of the shaft end slot
On wall, the secondary is installed on the rear end of the output shaft；With
Play detection device is configured to detect the displacement between the real time position and initial position of the output shaft, with root
According to primary described in the Bit andits control, and then keep the output shaft in the initial position.
Further, the secondary is permanent magnet, is installed on the output shaft.
Further, coil slot is offered on the peripheral wall of the shaft end slot, the winding coil of the primary is installed on described
Coil slot.
Further, the shell has drive end bearing bracket, offers axis hole on the drive end bearing bracket；
The Anti-moving device also has the primary for the wall surface front for being set to the axis hole, and is accordingly set to described
Secondary on output shaft.
Further, the rotor further include:
Two the first rolling bearing assemblies, each first rolling bearing assembly include the first rolling bearing, Yi Jishe
The shock-damping structure being placed on the first rolling bearing outer peripheral surface；And the both ends of the output shaft pass through described first and roll
Moving axis bearing assembly is installed on the shell；
Rotor axle sleeve, the rotor axle sleeve include inner cylinder portion, outer cylindrical portion and interconnecting piece；The outer cylindrical portion is set in described
The radial outside of canister portion；The interconnecting piece is set between the inner cylinder portion and the outer cylindrical portion, to connect the inner cylinder portion
The middle part at middle part and the outer cylindrical portion；The output shaft is installed in the centre bore of the inner cylinder portion, and the output shaft and institute
Inner cylinder portion is stated to connect by key drive mechanism；
Rotor core, the rotor core are installed on the outer cylindrical portion；And
Two the second rolling bearing assemblies, each second rolling bearing assembly include the second rolling bearing and connection branch
Frame；Two second rolling bearings are respectively arranged at the both ends of the inner cylinder portion, and each second rolling bearing is outer
Circle is installed on the shell by a connecting bracket.
Further, the shock-damping structure is resilient cushion, damping mat or is distributed in first rolling bearing with multiple
Compressed spring.
Further, the connecting bracket includes:
The outer ring of fixed ring, second rolling bearing is installed on the fixed ring；
Fixed flange, the fixed flange is installed on the inside of the shell, and is arranged with the rotor coaxial；With
Multiple disc are connected to the fixed ring and the fixed flange.
Further, each disc includes
Horizontal extension section is connected to the outer peripheral surface of the fixed ring；
Vertical extended segment is connected to the side towards the rotor of the fixed flange；With
Snakelike extended segment, both ends are connected to the vertical extended segment and the horizontal extension section, and erect with described
Straight extended segment and the horizontal extension section are tangent；And the snakelike extended segment is in closing on its output shaft on the whole
It arches upward end.
Further, the stator also has multiple heat release hole groups, and there are two be set to one to each heat release hole group tool
First strip-shaped hole of a corresponding stator slot two sides, each first strip-shaped hole extend along the axial direction of the stator,
And the radial outside towards the stator that is open；
Multiple second strip-shaped holes are provided on the shell, each second strip-shaped hole corresponds to one described first
The setting of shape hole；And
The motor further include:
Multiple first semiconductor chilling plates, each first semiconductor chilling plate are inserted into first strip-shaped hole,
And the cold end of each first semiconductor chilling plate is facing towards closing on its stator slot；
External radiating device is set to the outer surface of the shell；And
Multiple first thermally conductive sheets, each first thermally conductive sheet are connect with the external radiating device, and each described
One thermally conductive sheet is inserted into second strip-shaped hole and corresponding first strip-shaped hole, and in first strip-shaped hole
The hot end face contact of first semiconductor chilling plate against.
The present invention also provides a kind of control methods for any of the above-described kind of motor comprising:
Displacement between the real time position and initial position of output shaft described in real-time detection；
According to primary described in the Bit andits control, and then keep the output shaft in the initial position.
In motor of the invention, due to that can be detected in play detection device with play detection device and Anti-moving device
When axial float occurs to output shaft, control feeds to primary electric current etc., promotes secondary drive output shaft play direction in the axial direction
Opposite direction it is mobile, to prevent axial float, particularly, the rotation of output shaft will not be influenced.
Further, in motor of the invention, motor is realized using two connecting brackets and two the second rolling bearings
The fixed installation of rotor realizes the auxiliary installation of rotor, has certain bullet using two the first rolling bearings and shock-damping structure
Property, perturbation, and there is enough support strengths, significantly improve stability when working rotor, so guarantee output shaft with
Powerdriven stability between transmission parts disturbs in circumferential direction prevented also from output shaft.
Further, since semiconductor chilling plate being set in the slit opened up in stator slot and is directed at winding, and lead to
Heat derives that thermally conductive sheet can rapidly distribute winding are crossed to external radiating device；Further, it is led by control the first half
The fever of the operating power value of body cooling piece, the heat dissipation and motor that make motor reaches effective and reasonable unification, makes full use of difference
First semiconductor chilling plate of heat radiation power, guarantees the reasonability of motor radiating, i.e., the local rapid heat dissipation more than heat, and heat is few
Place heat dissipation is slow, reaches the unification of heat dissipation and fever, and then the temperature at each position of motor can be made to reach unanimity, to guarantee
The performance of motor.Multiple first semiconductor chilling plates are set, but also the performance number of each first semiconductor chilling plate is not very
Greatly, existing semiconductor chilling plate small in size can be made full use of.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram of motor according to an embodiment of the invention；
Fig. 2 is the schematic local structural graph of motor shown in Fig. 1；
Fig. 3 is the schematic diagram of the stator core in the stator of motor shown in Fig. 1；
Fig. 4 is the show in schematic partial sections of stator core shown in Fig. 3；
Fig. 5 is mounted to the schematic diagram of a copper bar conductor on stator core；
Fig. 6 is the schematic cross sectional views of motor shown in FIG. 1；
Fig. 7 is the schematic expanded view in Fig. 6 at A；
Fig. 9 and Fig. 8 is respectively the schematic diagram of two connecting brackets；
Figure 10 is the schematic diagram of motor according to an embodiment of the invention；
The schematic cross sectional views of connection structure of the Figure 11 between pedestal and shell；
Figure 12 is the schematic local structural graph of rotor.
Specific embodiment
Fig. 1 is the schematic diagram of motor according to an embodiment of the invention.As shown in Figure 1, and referring to figs. 2 to figure
12, the embodiment of the invention provides a kind of motors.Usual motor may include shell 100, stator 200 and rotor 300.Shell 100
The usually end cap with main casing 110 and setting and 110 both ends of main casing, such as housing forward end lid 120 and housing rear end lid 130.Stator
200 are set in shell 100.Rotor 300 is set to the radially inner side of stator 200.The iron core of stator 200 has stator slot 210,
Stator slot 210 is for winding winding 240.
In some embodiments of the invention, in order to improve the heat dissipation performance of motor, stator 200 also has multiple heat release holes
Group, there are two the first strip-shaped holes 220 for being set to 210 two sides of corresponding stator slot for each heat release hole group tool.Each first
Shape hole 220 extends along the axial direction of stator 200, and the radial outside towards stator 200 that is open.It is provided on shell 100 more
A second strip-shaped hole, each second strip-shaped hole correspond to the first strip-shaped hole 220 setting.
Motor further comprises multiple first semiconductor chilling plates 510, external radiating device 520 and multiple first thermally conductive
Piece 530.Each first semiconductor chilling plate 510 is inserted into first strip-shaped hole 220, and each first semiconductor chilling plate 510
Cold end facing towards closing on its stator slot 210.That is, the two sides of each stator slot 210 are the first semiconductor refrigerating
The cold end face of piece 510, to accelerate the heat dissipation of winding.External radiating device 520 may be disposed at the outer surface of shell 100.Each
One thermally conductive sheet 530 is connect with external radiating device 520, and each first thermally conductive sheet 530 is inserted into second strip-shaped hole and one
A corresponding first strip-shaped hole 220, and supported with the hot end face contact of the first semiconductor chilling plate 510 in first strip-shaped hole 220
It leans on.And first semiconductor chilling plate 510 and the first thermally conductive sheet 530 be completely filled with the first strip-shaped hole 220 of closing, and first is thermally conductive
Piece 530 need to be completely filled with the second strip-shaped hole.
In the motor of the embodiment of the present invention, the first semiconductor chilling plate 510 is set to the slit opened up in stator slot 210
In and alignment winding 240, and the heat derives that can be rapidly distributed winding 240 etc. by thermally conductive sheet 530 to external cooling fills
520 are set, motor radiating is high-efficient, guarantees the economic and technical norms such as efficiency, the torque of motor.Symmetrically arranged two the first half are led
Body cooling piece can make winding heat dissipation uniformly as far as possible, the motor integral heat sink structure being uniformly arranged, it is ensured that motor radiates on the whole
Uniformly, motor energy efficiency is further increased.
In some preferred embodiments of the invention, external radiating device 520 includes multiple second semiconductor chilling plates,
The cold end face paste of each second semiconductor chilling plate is against the outer surface of shell 100.And each second semiconductor chilling plate is cold
End face is in the radial outside of a stator slot 210.Certainly, in some alternate embodiments, each second semiconductor refrigerating
The cold end face of piece is in the radial outside in the region between two neighboring stator slot 210.Each second semiconductor chilling plate it is cold
First thermally conductive sheet 530 is all connected at every side edge of end face.
In other preferred embodiments of the invention, external radiating device 520 includes third semiconductor chilling plate.The
Three semiconductor chilling plates are cylindrical in shape, and are set in shell 100, and the peripheral wall in the cold end face of third semiconductor chilling plate and shell 100
It contacts against.When external radiating device 520 also uses semiconductor chilling plate, the heat dissipation effect of motor more ensure that.In addition,
The hot and cold side of semiconductor chilling plate is exchanged, and the motor can be made effectively to solve motor internal lubrication oil frozen problem, if on cold ground
Area uses, and can preheat to inside, preheating speed is fast, can effectively protect motor.
In some further embodiments of the invention, mounting groove is offered on shell 100, to install multiple the second half
Conductor cooling piece or installation third semiconductor chilling plate, and the hot end face of each second semiconductor chilling plate or third semiconductor system
Cold hot end face is contacted with the outer surface heat of shell 100.Radiating groove is offered on the outer surface of shell 100.It is arranged in this way
The outer surface of shell 100 can be made full use of to radiate, so that the hot end face of the second semiconductor and third semiconductor does not have to setting
Radiating fin can be such that the effective volume of motor reduces.Certainly, those skilled in the art can also partly lead in the second semiconductor and third
Radiating fin is arranged in the hot end face of body.Moreover, optionally, each first semiconductor chilling plate 510 is also inserted into one corresponding
Two strip-shaped holes.When heat sinking function in order to make full use of shell, it is preferable that the first semiconductor chilling plate 510 is not inserted into accordingly
Second strip-shaped hole.The length of each first strip-shaped hole 220 is 0.5 to 0.7 times of the length of stator slot 210, and is in stator 200
Middle part along its length.The length of each second strip-shaped hole is 0.6 to 0.8 times of the length of the first strip-shaped hole 220.
Further, it is also set up between 100 inner wall of region and shell in each 210 outside of stator slot of stator 200
There are multiple second thermally conductive sheets.Alternatively, each region of the lateral surface of stator 200 can be arranged between 100 inner wall of shell it is multiple
Second thermally conductive sheet.Moreover, each first thermally conductive sheet 530 is on the region between stator 200 and shell 100, and each
On second thermally conductive sheet, multiple through-holes are provided with, the diameter of each through-hole is 0.05mm to 0.15mm.In this way, can prevent
Closed area is presented between stator 200 and shell 100, influences motor performance, such as lubricating oil enters the region and do not go out.
In some embodiments of the invention, as shown in Figure 3 and Figure 4, also there are multiple oilhole groups on each stator 200,
Each oilhole group have 3 to the spaced rectangle oilhole 230 of 5 axial directions along stator 200, each oilhole group
Rectangle oilhole 230 is connected to the inside of stator 200 and the side towards stator slot 210 of first strip-shaped hole 220.Setting length
The lubricating oil that rectangular oilhole 230 can be such that rotor 300 carries enters oilhole, after semiconductor chilling plate heat exchange, in the movement of motor
It vibrates or by under the action of self gravity, flows out rectangle oilhole 230, accelerate the decline of lubricating oil temperature.For example, in electricity
The lubricating oil in rectangle oilhole 230 on the upside of machine can be under the action of the motion oscillations of motor or dependence self gravity.It is in
Lubricating oil in the rectangle oilhole 230 of downside can shake out under the motion oscillations of motor.
The long side face of each rectangle oilhole 230 extends along the axial direction of stator 200.And each rectangle oilhole 230
Two long side faces include the first long side face and the second long side face, and along the rotation direction of rotor 300, it is long that the first long side face is in second
The upstream side in side face.The side for closing on mover in the first long side face is provided with the first chamfer bevel, and closing on for the second long side face is dynamic
The side of son is provided with the second chamfer bevel, is respectively formed the first fillet surface 231 and the second fillet surface 232.Second chamfer bevel
Tilt angle be greater than the first chamfer bevel tilt angle.The oil droplet that rotor 300 carries founders the under the influence of centrifugal force
One long side face, the rear oil droplet squeezed out in rectangle oilhole 230, the second tilt angle is larger, can make the motion ratio of oil droplet smoothly.
Wherein, the size of chamfer bevel refers to the difference of the angle between 180 ° and corresponding long side face.
In some embodiments of the invention, as shown in figure 5, stator winding 240 is made of copper bar conductor 241, and copper bar
Insulated paint is provided on the outside of conductor 241；Stator winding includes multiple straightways 242, and two straightways 242 of connection are at least
One linkage section 243；At least one straightway 242 is provided in each stator slot.Stator also has multiple first insulating sleeves
244 and multiple second insulating sleeves 245.Each first insulating sleeve 244 is fabricated from a flexible material；Each end of each stator slot
Portion is provided at least one first insulating sleeve 244, to be set in a straightway 242 and corresponding linkage section 243.Each
Two insulating sleeves 245 are fabricated from a flexible material；Each second insulating sleeve 245 is set in the middle part of each linkage section 243.
Further, the interior diameter for the end of each first insulating sleeve 244 being located on the inside of corresponding stator slot is less than another
The interior diameter of one end.Multiple straightways 242 are provided in each stator slot, then each end of each stator slot all has more
The end of a first insulating sleeve 244, multiple first insulating sleeve 244 being located on the inside of corresponding stator slot is integrally formed, can
Fastness including installation, and guarantee the diversity of stator overbending direction, it is suitble to various coils.
In some embodiments of the invention, the first insulating sleeve 244 and the second insulating sleeve 245 include insulating paper and
It is set to the insulating film of insulating paper two sides.In some embodiments, insulating film includes: 80 parts by weight of polyimides, polycarbonate
80 parts by weight, 5 parts by weight of zinc oxide, 2 parts by weight of defoaming agent, 2 parts by weight of dispersing agent, 2 parts by weight of calgon, alkyl imidazole
0.5 parts by weight of quinoline, 0.4 parts by weight of polyoxyethylene ether, 50 parts by weight of modified crosslinking polyethylene, ethylene 10 weight of double oleamides
Part, 20 parts by weight of ceramic fibre, 15 parts by weight of modified montmorillonoid, 5 parts by weight of rare earth element, 3 parts by weight of silane coupling agent.Another
In some alternate embodiments, insulating film includes: 95 parts by weight of polyvinyl chloride, dioctyl adipate 2-5 parts by weight, O-phthalic
Dioctyl phthalate 2-8 parts by weight, zinc stearate 0.2-0.6 parts by weight, paraffin 0.15-0.25 parts by weight, ethane-acetic acid ethyenyl copolymerization
Object 3-10 parts by weight, pentaerythritol fatty acid ester 0.1-0.2 parts by weight, acetyl tributylcitrate 0.2-0.5 parts by weight, silicic acid co-precipitation
Lead silicate 1-3 parts by weight, barium stearate 0.2-0.6 parts by weight, diphenol propane 0.01-0.02 parts by weight, N- phenyl Malaysia acyl
Imines 0.1-0.5 parts by weight.
First insulating sleeve and the second insulating sleeve, it is ensured that copper bar conductor is during bending, even if insulated paint damages
It is bad, it also can guarantee the insulation performance of copper bar conductor, motor can be protected, improve the service life of motor.Multiple first insulating sleeves
Be located at corresponding stator slot on the inside of end be integrally formed, and inner end interior diameter be greater than outer end interior diameter, it is ensured that first insulation
The fastness of sleeve installation will not be detached from because of vibration of motor etc. from the end of stator slot.Moreover, outer end is separately positioned,
The diversity that can guarantee multiple copper bar conductor bendings, will not interfere the position of copper bar conductor.The special composition of insulating film,
Not only high temperature resistant, and there is good heat sinking function, it is quickly transferred to outside the windings such as stator convenient for the heat on copper bar conductor
Side.
In some embodiments of the invention, as shown in Figures 6 to 9, rotor 300 may include output shaft 310, rotor axle sleeve
320,330, two the first rolling bearing assemblies 340 of rotor core and two the second rolling bearing assemblies 350.
Each first rolling bearing assembly 340 includes the first rolling bearing 341, and is set to the first rolling bearing 341
Shock-damping structure 342 on outer peripheral surface.And the both ends of output shaft 310 pass through the first rolling bearing assembly 340 and are installed on shell
100.Such as it is installed on the drive end bearing bracket 120 and rear end cap 130 of shell 100.
The both ends of the surface of rotor axle sleeve 320 all have annular recess, so that rotor axle sleeve 320 includes inner cylinder portion 321, outer cylindrical portion
322 and interconnecting piece 323.Inner cylinder portion 321 is installed on output shaft 310, and outer cylindrical portion 322 is set to the radial outside of inner cylinder portion 321, connects
Socket part 323 is set between inner cylinder portion 321 and outer cylindrical portion 322, to connect inner cylinder portion 321 and outer cylindrical portion 322.Specifically, it exports
Axis 310 is installed in the centre bore of inner cylinder portion 321, and output shaft 310 and inner cylinder portion 321 carry out transmission company by spline drived structure
It connects.Rotor core 330 is installed on the outside of rotor axle sleeve 320.Rotor core 330 is installed on outer cylindrical portion 322.
Each second rolling bearing assembly 350 includes the second rolling bearing 351 and connecting bracket 352.Two second rollings
Bearing 351 is respectively arranged at the both ends of inner cylinder portion 321, and the outer ring of each second rolling bearing 351 passes through a connecting bracket
352 are installed on shell 100.
The embodiment of the present invention can reduce the weight of rotor 300, by the way that rotor 300 is arranged to special structure convenient for turning
The processing and manufacturing of son 300, rotor core 330 are easily replaced, and rotor axle sleeve 320 is generally applicable.Particularly, the weight saving of rotor 300
Later, the power of own rotation consumption is less, significantly improves efficiency.
Further, the rotor 300 of motor is realized using two connecting brackets 352 and two the second rolling bearings 351
It is fixedly mounted, using two the first rolling bearings 341 and shock-damping structure 342, realizes the auxiliary installation of rotor 300, have certain
Elasticity, perturbation, and have enough support strengths, significantly improve rotor 300 work when stability, and then guarantee it is defeated
Powerdriven stability between shaft 310 and transmission parts.Prevented also from only with it is existing, at 310 both ends of output shaft
Two rolling bearings being arranged and being directly mounted at shell 100, it is understood that there may be the inadequate problem of support force.It can prevent from leading to
Cross multiple rolling bearings, cause the disturbance performance of output shaft 310 insufficient, the rotation of output shaft 310 may be locked, influence bearing and
The service life of rotor 300.
In some embodiments of the invention, in order to further decrease motor operating when vibration and noise.Such as Figure 10
To shown in Figure 12, pedestal 600 can be equipped with below shell 100.It is provided with support pillar 610 on pedestal 600, is set on shell 100
It is equipped with stop sleeve 620.Stop sleeve 620 is sheathed on support pillar 610, the bottom surface of stop sleeve 620 and support pillar 610
End face between be provided with compressed spring 630 and the supporting pad positioned at 630 ring inner side and outer side of compressed spring.
Further, uniformly distributed multiple pillars 640 on the lower end surface of stop sleeve 620, the lower end of each pillar 640 is provided with
Multiple limited blocks are enclosed with damping mat on each limited block.The outside of support pillar 610 is evenly equipped with multiple connection spacing collars
650.Each limited block is inserted into a connection spacing collar 650, and is provided with to be located between each limited block and pedestal 600 and be connected
Connect the extension spring 660 in spacing collar 650.Preferably, the quantity for supporting pillar 610 and stop sleeve 620 is four, if
It is placed in the rear and front end of shell 100；And each support pillar 610, each stop sleeve 620, each pillar 640 and each connection
Spacing collar 650 is obliquely installed.
In embodiments of the present invention, compressed spring 630 and extension spring 660 are used cooperatively, and can be eliminated as much as possible
Noise when motor oscillating, and guarantee stability when rotor 300 vibrates, prevent the biography connected to it of output shaft 310
Dynamic component be detached from, even if slightly off can also Quick-return, will not to it is subsequent transmission impact.That is, in the implementation
In example, rotor 300 is using between special fixed form and motor whole (shell 100 and its internal structure) and pedestal 600
Special fixed form, the two combines, and can eliminate noise when motor oscillating as much as possible, and guarantee rotor 300
Stability when vibration prevents the transmission parts connected to it of output shaft 310 to be detached from, even if slightly off can also quickly return
It is multiple, subsequent transmission will not be impacted.
In some embodiments of the invention, shock-damping structure 342 is resilient cushion, damping mat or is distributed in first with multiple
The compressed spring of rolling bearing 341.As shown in Figure 7 and Figure 8, connecting bracket 352 may include fixed ring 353, fixed flange 354
With multiple disc 355.The outer ring of second rolling bearing 351 is installed on fixed ring 353.Fixed flange 354 is installed on shell 100
Inside, and with rotor 300 be coaxially disposed.Multiple disc 355 are connected to fixed ring 353 and fixed flange 354.
In some embodiments of the invention, each disc 355 has horizontal extension section 356, vertical extended segment 357 and snake
Shape extended segment 358.Horizontal extension section 356 is connected to the outer peripheral surface of fixed ring 353.Vertical extended segment 357 is connected to mounting flange
The side towards rotor 300 of disk 354.The both ends of snakelike extended segment 358 are connected to vertical extended segment 357 and horizontal extension
Section 356, and it is tangent with vertical extended segment 357 and horizontal extension section 356；And snakelike extended segment 358 is on the whole in closing on it
The end of output shaft 310 arch upward.Using snakelike extended segment 358, the tension of steel plate and the bounce after compression can make patent
The vibration of movement quickly reduces, and Amplitude Comparison is small, can make rotor 300 rapidly and make rotor 300 to reset, and guarantees rotor 300 and whole
The operation stability of a motor.In some alternate embodiments, each disc 355 is to the end for the output shaft 310 for closing on it
The smooth curved plate that portion arches upward.
In some embodiments of the invention, as shown in figure 12, the front end of rotor core 330 may be provided with front apron 360,
Rear end is provided with rear baffle 370.The front end of the outer cylindrical portion 322 of rotor axle sleeve 320 is provided with fin.When installation, first by front apron
360 cooperate with fin, and rotor core 330 is then installed on outer cylindrical portion 332, after rear baffle 370 is mounted on outer cylindrical portion
322 are fixed.
In some embodiments of the invention, in order to which the output shaft and the axial direction of rotor that prevent motor as much as possible are altered
It is dynamic.Shaft end slot 131 is offered on rear end cap 130.Shaft end slot 131 is inserted into the rear end of output shaft 310.As shown in fig. 6, motor also wraps
Include Anti-moving device and play detection device.Anti-moving device has primary 810 and secondary 820；Primary 810 is installed on shaft end slot
On 131 peripheral wall, secondary 820 is installed on the rear end of output shaft.Primary 810 and secondary 820 may make up one and be similar to linear motor
Structure.Play detection device is configured to the displacement between the real time position and initial position of detection output shaft, according to displacement
Control primary 810, and then keep output shaft in initial position.That is, utilizing primary after axial float occurs
810 active forces contrary with secondary 820 pairs of output shafts application axial float, make output shaft return to initial position.Particularly,
The flexible control of motor is realized by the size of change power according to the power that displacement real-time control primary 810 is applied to secondary 820,
Different size of axial float is adapted to, and by closed loop feedback control, control is accurate.Play detection device can fill for displacement detecting
It sets, may be, for example, laser distance sensor.
Further, secondary 820 is multiple permanent magnets, is installed on output shaft.Coil is offered on the peripheral wall of shaft end slot 131
The winding coil of slot, primary 810 is installed on coil slot.Axis hole is offered on drive end bearing bracket 120；Anti-moving device, which also has, to be set to
The primary of the wall surface front of axis hole, and the secondary being accordingly set on output shaft.
The embodiment of the invention also provides a kind of control methods.Control method can include: real-time detection output shaft it is real-time
Displacement between position and initial position.According to Bit andits control primary 810, and then keep output shaft in initial position.
For example, when the displacement of axial float is big, generate biggish restoring force using primary 810 and secondary 820, with play by
Tapered small, restoring force also becomes smaller.The power of secondary 820 is applied to according to displacement real-time control primary 810, by changing the big of power
It is small, it realizes the flexible control of motor, adapts to different size of axial float, and by closed loop feedback control, control is accurate.
In some embodiments of the invention, motor further includes multiple temperature sensor (not shown)s, each temperature
Sensor is set to the rear end of second strip-shaped hole, to detect the temperature of the first thermally conductive sheet 530 in second strip-shaped hole.Control
Method processed further include: step A: the temperature of corresponding first thermally conductive sheet 530 is detected using each temperature sensor.Step B: according to every
The temperature of a first thermally conductive sheet 530 controls the performance number of corresponding first semiconductor chilling plate 510, so that any two first are led
Difference between the temperature of backing 530 is within a preset range.
In this embodiment, the operating power value of each first semiconductor chilling plate 510 is made to be not quite similar, to motor into
The reasonable heat dissipation of row.I.e. by the operating power value of the first semiconductor chilling plate 510 of control, make the heat dissipation of motor and the hair of motor
Heat reaches effective and reasonable unification, makes full use of the first semiconductor chilling plate 510 of different heat radiation powers, guarantees motor radiating
Reasonability, i.e., the local rapid heat dissipation more than heat, the few place heat dissipation of heat is slow, reaches the unification of heat dissipation and fever, and then can make
Temperature at each position of motor reaches unanimity, to guarantee the performance of motor.Preset range is preferably 0 DEG C to 3 DEG C.
It in some embodiments of the invention, further include step C before step A: when opening motor every time, and in electricity
When the time interval that machine opens when the last motor of distance is closed is greater than prefixed time interval, environment temperature locating for motor is detected
Degree, and according to the unlatching of environment temperature the first semiconductor chilling plate 510 of control；Such as the first semiconductor is determined according to environment temperature
The delay opening time of cooling piece 510, and according to the unlatching of the first semiconductor chilling plate 510 of delay opening time control.Otherwise,
When motor is opened, while opening the first semiconductor chilling plate 510.The embodiment of the present invention has fully considered the building ring of motor
Border postpones the first semiconductor chilling plate of unlatching 510 of longer time in colder place, saves resource.On hotter ground
Side, or twice the available machine time it is shorter in the case where, open the first semiconductor chilling plate 510 as soon as possible, carry out sufficiently effective
Heat dissipation.Preferably, prefixed time interval is 2h to 4h, preferably 2.5h, 3h etc..
Further, after stepb further include step D: close motor stator and rotor preset time after close
Semiconductor cooling piece 510.And preset time is 10min to 15min.After motor closing, motor fast cooling can be made extremely
Under normal temperature state, motor is protected, prevents motor overheating loss etc..
Further, when external radiating device 520 includes multiple second semiconductor chilling plates, the second semiconductor chilling plate
It is synchronous with the first semiconductor chilling plate 510 to open；The performance number of multiple second semiconductor chilling plates is identical.Work as external radiating device
520 include third semiconductor chilling plate.Third semiconductor chilling plate is synchronous with the first semiconductor chilling plate 510 to be opened.
In some currently preferred embodiments of the present invention, when external radiating device 520 includes multiple second semiconductor chilling plates
When, the second semiconductor chilling plate is synchronous with the first semiconductor chilling plate 510 to be opened.And the power of each second semiconductor chilling plate
It can be adapted with the power of corresponding first semiconductor chilling plate 510.For example, can be to be thermally connected to second semiconductor chilling plate
The sum of power of two the first semiconductor chilling plates 510 or the sum of 1.02 times to 1.05 times.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
1. a kind of motor, including shell, stator and rotor；The stator is set in the shell；The rotor is set to institute
State the radially inner side of stator；The shell has rear end cap, offers shaft end slot on the rear end cap；The rotor has output
The shaft end slot is inserted into the rear end of axis, the output shaft；It is characterized in that, the motor further include:
Anti-moving device, the Anti-moving device have primary and secondary；The primary is installed on the peripheral wall of the shaft end slot,
The secondary is installed on the rear end of the output shaft；With
Play detection device is configured to detect the displacement between the real time position and initial position of the output shaft, according to institute
Primary described in Bit andits control is stated, and then keeps the output shaft in the initial position.
2. motor according to claim 1, which is characterized in that
The secondary is permanent magnet, is installed on the output shaft.
3. motor according to claim 1, which is characterized in that
Coil slot is offered on the peripheral wall of the shaft end slot, the winding coil of the primary is installed on the coil slot.
4. motor according to claim 1, which is characterized in that
The shell has drive end bearing bracket, offers axis hole on the drive end bearing bracket；
The Anti-moving device also has the primary for the wall surface front for being set to the axis hole, and is accordingly set to the output
Secondary on axis.
5. motor according to claim 1, which is characterized in that the rotor further include:
Two the first rolling bearing assemblies, each first rolling bearing assembly includes the first rolling bearing, and is set to
Shock-damping structure on the first rolling bearing outer peripheral surface；And the both ends of the output shaft pass through first axis of rolling
Bearing assembly is installed on the shell；
Rotor axle sleeve, the rotor axle sleeve include inner cylinder portion, outer cylindrical portion and interconnecting piece；The outer cylindrical portion is set to the inner cylinder portion
Radial outside；The interconnecting piece is set between the inner cylinder portion and the outer cylindrical portion, to connect the middle part of the inner cylinder portion
With the middle part of the outer cylindrical portion；The output shaft is installed in the centre bore of the inner cylinder portion, and the output shaft and described interior
Canister portion is connected by key drive mechanism；
Rotor core, the rotor core are installed on the outer cylindrical portion；And
Two the second rolling bearing assemblies, each second rolling bearing assembly include the second rolling bearing and connecting bracket；
Two second rolling bearings are respectively arranged at the both ends of the inner cylinder portion, and the outer ring of each second rolling bearing is logical
It crosses the connecting bracket and is installed on the shell.
6. motor according to claim 5, which is characterized in that
The shock-damping structure is for resilient cushion, damping mat or with multiple compressed springs for being distributed in first rolling bearing.
7. motor according to claim 5, which is characterized in that the connecting bracket includes:
The outer ring of fixed ring, second rolling bearing is installed on the fixed ring；
Fixed flange, the fixed flange is installed on the inside of the shell, and is arranged with the rotor coaxial；With
Multiple disc are connected to the fixed ring and the fixed flange.
8. motor according to claim 7, which is characterized in that each disc includes
Horizontal extension section is connected to the outer peripheral surface of the fixed ring；
Vertical extended segment is connected to the side towards the rotor of the fixed flange；With
Snakelike extended segment, both ends are connected to the vertical extended segment and the horizontal extension section, and prolong vertically with described
It stretches section and the horizontal extension section is tangent；And the snakelike extended segment is in the end for the output shaft for closing on it on the whole
It arches upward.
9. motor according to claim 1, which is characterized in that the stator also has multiple heat release hole groups, each described
There are two the first strip-shaped hole for being set to the corresponding stator slot two sides, each first strip-shaped hole edges for heat release hole group tool
The axial direction of the stator extends, and the radial outside towards the stator that is open；
Multiple second strip-shaped holes are provided on the shell, each second strip-shaped hole corresponds to first strip-shaped hole
Setting；And
The motor further include:
Multiple first semiconductor chilling plates, each first semiconductor chilling plate are inserted into first strip-shaped hole, and every
The cold end of a first semiconductor chilling plate is facing towards closing on its stator slot；
External radiating device is set to the outer surface of the shell；And
Multiple first thermally conductive sheets, each first thermally conductive sheet are connect with the external radiating device, and each described first leads
Backing is inserted into second strip-shaped hole and corresponding first strip-shaped hole, and in first strip-shaped hole described in
The hot end face contact of first semiconductor chilling plate against.
10. a kind of control method for motor described in any one of claims 1 to 9 characterized by comprising
Displacement between the real time position and initial position of output shaft described in real-time detection；
According to primary described in the Bit andits control, and then keep the output shaft in the initial position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488107.XA CN109412336B (en) | 2018-12-06 | 2018-12-06 | Motor and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488107.XA CN109412336B (en) | 2018-12-06 | 2018-12-06 | Motor and control method thereof |
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| CN109412336A true CN109412336A (en) | 2019-03-01 |
| CN109412336B CN109412336B (en) | 2020-05-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165817A (en) * | 2019-07-09 | 2019-08-23 | 太仓市海谷五金机电设备有限公司 | A kind of precision electric motor with radial damping |
| CN112039277A (en) * | 2020-08-24 | 2020-12-04 | 珠海格力电器股份有限公司 | Motor shaft end supporting structure and motor |
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| CN1053516A (en) * | 1990-01-18 | 1991-07-31 | 德国汤姆森-勃朗特有限公司 | Eliminate the device of Device for elimination of axial-and radial-play |
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| CN110165817A (en) * | 2019-07-09 | 2019-08-23 | 太仓市海谷五金机电设备有限公司 | A kind of precision electric motor with radial damping |
| CN112039277A (en) * | 2020-08-24 | 2020-12-04 | 珠海格力电器股份有限公司 | Motor shaft end supporting structure and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109412336B (en) | 2020-05-12 |
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