A kind of rotor of oil-cooled motorTechnical field
The utility model is related to a kind of motors, more specifically, it relates to a kind of rotor of oil-cooled motor.
Background technology
Currently, the cooling structure applied to new-energy automobile driving motor has the modes such as air-cooled and casing liquid cooling, air-cooled sideFormula radiates to motor by wind, but since air itself is undesirable heat conductor, and it is poor to easily cause motor radiating effect, electricityHeat at machine cannot shed in time, and motor temperature rise can be made higher, for this purpose, the size of ventilated machine often do it is larger,The thermal capacity of motor is reduced with this.
Currently, the Chinese utility model patent that notification number is CN206834870U discloses a kind of electricity with oil cooling structureMachine rotor, include by be pressed in together shaft and the rotor body that constitutes of rotor core, the axial direction of the shaft be set to describedOil inlet passage in shaft, and in the shaft or be formed in fuel-displaced logical between the shaft and the rotor coreRoad, at least one end and external oil circuit connection that the oil inlet passage can be via the shaft, with the fuel feeding into the oil inlet passage,The oil discharge passage is configured to be connected to setting with the oil inlet passage, and the oil discharge passage also has positioned at the rotor ironThe oil outlet on the outside of core at least one end, along the shaft radially arranged.
In above-mentioned technical proposal, rotor core is directly connected to cause the volume of rotor excessive with shaft, so as to cause turningThe weight of sub- iron core is excessive, influences the performance of motor.
Utility model content
In view of the deficienciess of the prior art, the utility model lies in that provide a kind of rotor of oil-cooled motor, holder is utilizedThe weight for reducing rotor improves the performance and efficiency of motor.
To achieve the above object, the utility model provides following technical solution：A kind of rotor of oil-cooled motor, including turnAxis, holder and rotor core, the holder coaxial sleeve are set in shaft, and the rotor core has been fixedly and coaxially connected on holder,Offer main oil gallery in the shaft, a point oil duct circumferentially offered on the holder, circumferentially offered in the shaft it is several withThe through-hole of main oil gallery connection, coaxially offer on the holder with the annular groove that divides oil duct be connected to, fix and be placed on when the holderWhen in shaft, the one end of the through-hole far from shaft is directed at annular groove.
By using above-mentioned technical proposal, rotor core is fixedly connected on holder, is then set to holder coaxial sleeve and is turnedOn axis, it is to be fixedly connected with rotor core with shaft using holder, rotor iron is reduced in the case where not reducing root diameterThe volume of core, and then the weight of rotor core is reduced, the weight of rotor is reduced, the performance and efficiency of motor are improved.
The utility model is further arranged to：The rotor core both ends are equipped with magnetic isolation plate, are circumferentially opened on the magnetic isolation plateEquipped with every offering the connection oil duct being connected to every magnetic oil duct on magnetic oil duct, the holder, the connection oil duct connects with oil duct is dividedIt is logical, tell that connection oil duct is parallel with shaft pivot center.
By using above-mentioned technical proposal, after electric motor starting, rotor rotates under the magnetic force, every cold in magnetic oil ductBut oil makes to form low pressure in rotor oil duct, more cooling oils is made to enter rotor oil duct in the effect of centrifugal force to rotor is thrown away,Reduce the output pressure of oil pump, and cooling oil can uniformly be sprayed on stator, be cooled down to stator.
The utility model is further arranged to：It is described every on the contact surface that magnetic oil duct is opened in magnetic isolation plate and rotor core,The connection oil duct is opened on the contact surface of holder and rotor core, described to be with the cross section for being connected to oil duct every magnetic oil ductIt is semicircle.
By using above-mentioned technical proposal, cooling oil is made to be in direct contact with rotor core, and expand opened cooling oil withThe contact area of rotor core makes the cooling effect of rotor more preferably.
The utility model is further arranged to：The holder includes sleeve part, connecting plate and fixed cylinder, and the sleeve part is logicalIt crosses bolt to be fixedly connected with shaft, the fixed cylinder and sleeve part are coaxially disposed, and the connecting plate in a ring and is fixedly connectedBetween fixed cylinder and sleeve, the connecting plate is located at the centre position of fixed cylinder, and the rotor core is fixedly connected on fixationOn cylinder.
By using above-mentioned technical proposal, the weight of holder is alleviated, alleviates the weight of rotor, and the rotor balancedAxial weight, make the performance and efficiency for improving motor of motor.
The utility model is further arranged to：The magnetic isolation plate includes every magnetic foreboard and every on magnetic bottom plate, the fixed cylinderOne end is equipped with along the support portion being bent away from rotor shaft direction, described to be sheathed on fixed cylinder every magnetic bottom plate and contact at support portionOn, the rotor core is contacted at every on magnetic bottom plate, and the rotor core every one end of magnetic bottom plate far from contacting at every magnetic foreboardOn, it is described to be bolted to connection in fixed cylinder every magnetic foreboard.
By using above-mentioned technical proposal, rotor core will be turned in peace after the installation of magnetic bottom plate, finally installed before magnetic againPlate facilitates the installation of rotor core, provides production efficiency.
The utility model is further arranged to：The straight line every where magnetic oil duct without magnetic isolation plate the center of circle, it is describedIt is close to shaft along the direction of rotation of shaft every magnetic oil duct.
By using above-mentioned technical proposal, when cooling oil every magnetic oil duct from when spraying, generation reaction force applies rotorPower identical with direction of rotation, to apply the power of rotation to rotor.
The utility model is further arranged to：It is described arc-shaped every magnetic oil duct, the magnetic isolation plate outer wall phase every magnetic oil ductIt cuts.
By using above-mentioned technical proposal, the direction of reaction force when cooling oil being made to spray and rotation direction are tangent, intoOne step increases the power of rotor.
In conclusion the utility model has the advantages that：
First, increasing the diameter of rotor using holder, the distance between shaft and rotor core are increased, to increaseThe arm of force of electromagnetic force, and then the torque of shaft is increased, improve the performance and efficiency of motor；
Second, semicircular in shape will be arranged with oil duct is connected to every magnetic oil duct, it can also be to expand using less cooling oil and turnThe contact area of sub- iron core and coolant liquid, to further provide the cooling effect of motor；
Third, providing additional torque using cooling oil for rotor, the performance of motor is further increased.
Description of the drawings
Fig. 1 is the sectional view of the present embodiment；
Fig. 2 is the portions the A enlarged drawing of Fig. 1；
Fig. 3 is the sectional view that the present embodiment is used to show rotor；
Fig. 4 is the structural schematic diagram that the present embodiment is used to show magnetic isolation plate.
Reference numeral：1, casing；11, shell；111, oil inlet pipe；112, the first oil duct；113, the second oil duct；114, it is connected toAnnular groove；115, rear bearing groove；116, rear rolling bearing；117, atomizer；118, flowline；119, collecting tank；12, drive end bearing bracket；121, end cap oil duct；122, fore bearing slot；123, front roll bearing；124, oil seal groove；125, oil sealing；126, the second resigning ringSlot；127, the first resigning annular groove；13, stator；131, stator core；132, winding；133, fixed ear；2, rotor；21, rotor ironCore；22, holder；221, fixed cylinder；222, connecting plate；223, sleeve part；224, support portion；225, annular groove；226, divide oil duct；227, it is connected to oil duct；228, every magnetic oil duct；229, main oil gallery；23, shaft；231, blind hole；232, spline；233, first baffle；234, relief hole；235, second baffle；236, through-hole；241, every magnetic foreboard；242, every magnetic bottom plate；25, rotation becomes rotor；251, blockSpring；252, rotation becomes stator.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；In retouching for the present inventionIn stating, it is to be understood that if it is based on attached drawing to have the orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right"Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicatedDevice or element must have a particular orientation, with specific azimuth configuration and operation, therefore position relationship described in attached drawingTerm only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, canTo understand the concrete meaning of above-mentioned term as the case may be.
A kind of rotor of oil-cooled motor, as shown in Figure 1, including casing 1, the stator 13 being fixedly connected on casing 1 and turningThe dynamic rotor 2 for being connected to casing 1, rotor 2 is with stator 13 in coaxial arrangement.Induced field driving is generated after stator 13 is powered to turnSon 2 rotates.Oil inlet pipe 111 and flowline 118 are offered on casing 1.Rotor 2 offers rotor oil duct, and rotor oil duct includes masterOil duct 229 and divide oil duct 226, wherein main oil gallery 229 is connected in coaxial arrangement and with rotor 2 with oil inlet pipe 111, divides oil ductIt is there are six 226 and circumferentially distributed on rotor 2, divide oil duct 226 to be connected to main oil gallery 229.By oil inlet pipe 111 to casing 1It is inside passed through cooling oil, cooling oil is entered by main oil gallery 229 and divides oil duct 226 to be cooled down to rotor 2, then flow to machine againStator 13 is cooled down inside shell 1.
As shown in Figure 1, including drive end bearing bracket 12, shell 11 and stator 13 on shell 11, shell 11 is in the cylinder of one end openShape, drive end bearing bracket 12 are bolted to connection on shell 11 and closing opening, and stator 13 is fixedly and coaxially connected by boltIn on shell 11.Shell 11 offers the first oil duct 112 and the second oil duct 113 being connected to oil inlet pipe 111, the first oil duct 112In laterally setting, end cap 12 extends forward.The end cap oil duct 121 being connected to the first oil duct 112 is offered on drive end bearing bracket 12.
As shown in Fig. 2, offering fore bearing slot 122 on drive end bearing bracket 12, there is and rotor 2 interference fit in fore bearing slot 122The front roll bearing 123 of adaptation.End cap oil duct 121 is in being vertically arranged and 121 one end of end cap oil duct and fore bearing slot 122 connectIt is logical.When cooling oil end cap oil duct 121 flows into fore bearing slot 122, cooling oil is flowed by the gap inside front roll bearing 123In 1 internal cavities of casing, front roll bearing 123 is cooled down and lubricated using cooling oil.It offers and turns on drive end bearing bracket 12For son 2 in the oil seal groove 124 of coaxial arrangement, oil seal groove 124 is interior to be equipped with the oil sealing 125 being adapted to rotor 2, oil seal groove 124 and end capOil duct 121 is connected to, and is cooled down to oil sealing 125 using cooling oil, prevents that oil sealing 125 is made to deform and influence oil due to temperature is excessively highThe leakproofness of envelope 125.
As shown in Figure 1, offering rear bearing groove 115 on shell 11, interference fit has suitable with rotor 2 in rear bearing groove 115The rear rolling bearing 116 matched.Shell 11 is equipped with the connection annular groove 114 in coaxial arrangement with rear bearing groove 115, and connected ringSlot 114 is connected to rear bearing groove 115, and connection annular groove 114 is connected to the second oil duct 113.Cooling oil enters second from oil inlet pipe 111In oil duct 113, then flows into connection annular groove 114 and rear bearing groove 115 and rear rolling bearing 116 is cooled down.11 bottom of shellThe first resigning annular groove 127 is offered on wall, drive end bearing bracket 12 is equipped with the second resigning annular groove 126, and the left end of stator 13 is placed in firstThe right end of resigning annular groove 127, stator 13 is placed in the second resigning annular groove 126, makes the inner wall of the bottom wall and front end face of 13 casing 1 of statorBetween there are gaps, so that the cooling oil in 1 cavity of casing is more smoothly flow to flowline 118, and to the left and right of stator 13Both ends are cooled down.It is bolted to connection on shell 11 and becomes stator 252 in the rotation of coaxial arrangement with rotor 2.
As shown in Figure 1, stator 13 includes winding 132 and stator core 131, winding 132 is fixedly connected on stator core 131On, it is circumferentially provided with three fixed ears 133 on stator core 131, is fixedly connected with fixed ear 133 with shell 11 using bolt,So that stator core 131 is fixedly connected on shell 11, and between 11 inner wall of 131 outer wall of stator core and shell there areGap, 11 lower end of shell offer collecting tank 119, and collecting tank 119 is the least significant end with 11 inner wall of shell, collecting tank 119 with it is fuel-displacedPipe 118 is connected to.It is flowed under gravity to collecting tank 119 into the cooling oil in 1 cavity of casing, then again by fuel-displacedMotor is discharged in pipe 118.Shell 11 is plugged with the atomizer 117 in coaxial arrangement, atomizer 117 with rotor 2 and places the master of rotor 2In oil duct 229, cooling oil is conveyed to rotor oil duct using atomizer 117.
As shown in figure 3, rotor 2 includes shaft 23, holder 22 and rotor core 21, holder 22 is fixedly and coaxially connected in shaftOn 23, rotor core 21 is fixedly and coaxially connected on holder 22.Shaft 23 passes through front roll bearing 123 and rear rolling bearing 116It is fixedly connected on casing 1（Referring to Fig. 1）On.Blind hole 231 is offered in shaft 23, the length of blind hole 231 is more than the axis of holder 22To length, interference fit has first baffle 233 and second baffle 235, first baffle 233 to offer relief hole in blind hole 231234, the one end of shaft 23 far from blind hole 231 is equipped with spline 232.Atomizer 117（Referring to Fig. 1）It is placed through in blind hole 231, oil spoutThe front end of mouth 117 is in truncated cone-shaped, and the one end of atomizer 117 far from shell 11 is placed through in relief hole 234, the hole of relief hole 234There are gaps between 117 outer wall of wall and atomizer.Blind hole 231 is connected to close to 116 one end of rear rolling bearing with annular groove 114 is connected to,It flows to cooling oil extra in rear rolling bearing 116 to flow in blind hole 231, then from the hole wall of relief hole 234 and atomizer 117Gap between outer wall flows between first baffle 233 and second baffle 235.Circumferentially offered on 23 outer wall of shaft six withThe through-hole 236 that blind hole 231 is connected to, through-hole 236 close to one end of blind hole 231 be located at first baffle 233 and second baffle 235 itBetween.
As shown in figure 3, holder 22 includes integrally formed sleeve part 223, connecting plate 222 and fixed cylinder 221, fixed cylinder221 are coaxially disposed with sleeve part 223, and connecting plate 222 in a ring and is fixedly connected between fixed cylinder 221 and sleeve, connectPlate 222 is located at the centre position of fixed cylinder 221, and 223 right end of sleeve part is fixedly connected with connecting plate 222.Sleeve part 223 passes through spiral shellBolt is fixedly connected in shaft 23, and one end rotation of the sleeve part 223 far from connecting plate 222 becomes rotor 25, is arranged on sleeve part 223Fixed rotation becomes the clamp spring 251 of rotor 25.Rotation becomes rotor 25 and is placed in rotation change stator 252（Referring to Fig. 1）It is interior, become 25 He of rotor using rotationRotation becomes the rotating speed that stator 252 controls machine shaft 23.
As shown in figure 3, rotor core 21 is fixed on by magnetic isolation plate in fixed cylinder 221, magnetic isolation plate includes every magnetic foreboard 241With every magnetic bottom plate 242.One end is equipped with to the support portion 224 being bent away from 23 direction of shaft, every magnetic bottom plate 242 in fixed cylinder 221It is sheathed on fixed cylinder 221 and contacts on support portion 224, rotor core 21 is sheathed in fixed cylinder 221 and rotor core21 left end is contacted at every on magnetic bottom plate 242, every magnetic foreboard 241 be bolted to connection in fixed cylinder 221 on and supportIt touches in the right end of rotor core 21, rotor core 21 is fixed on holder 22 using every magnetic foreboard 241 and every magnetic bottom plate 242.It is circumferentially equipped with magnet steel in rotor core 21（It is not shown in figure）, magnet steel magnetized rotor iron core 21 generates when stator 13 is poweredInduced field, to generate the power that magnetic force makes rotor core 21 generate rotation, 21 band of rotor core with the magnetic field of rotor core 21Turn axis 23 rotates.
As shown in figure 3, offering annular groove 225 on 223 inner wall of sleeve part, when sleeve part 223 is placed in shaft 23, lead toThe one end of hole 236 far from main shaft is directed at annular groove 225.Six points of oil ducts 226 are circumferential to be opened on connecting plate 222, and oil duct 226 1 is dividedEnd is connected to annular groove 225, is divided the one end of oil duct 226 far from annular groove 225 to be communicated with connection oil duct 227, is connected to oil duct 227 and shaft23 pivot centers are parallel.Connection oil duct 227 is opened in holder 22 on the contact surface of rotor core 21, is connected to the cross of oil duct 227Section is semicircle, is offered every magnetic oil duct every magnetic foreboard 241 and every on the contact surface of magnetic bottom plate 242 and rotor core 21228, it is connected to every 228 one end of magnetic oil duct with oil duct 227 is connected to, the other end is connected to the outer wall of magnetic isolation plate and is aligned winding 132,Winding 132 is cooled down.It is semicircle every 228 cross section of magnetic oil duct, coolant liquid is made to be in direct contact with rotor core 21, andAnd expand the contact area for having opened cooling oil and rotor core 21, make the cooling effect of rotor 2 more preferably.
As shown in figure 4, it is arc-shaped every magnetic oil duct 228, it is tangent every the magnetic isolation plate outer wall of magnetic oil duct 228, it is described every magnetic oil duct228 along the direction of rotation of shaft 23 to shaft 23（Referring to Fig. 3）It is close.When cooling oil is flow to from connection oil duct 227 every magnetic oilIn road 228, then by being sprayed from every magnetic oil duct 228, the rotation direction of the direction and the rotor 2 that are sprayed using cooling oil on the contrary,To cooling oil sprayed from every magnetic oil duct 228 when, be rotor 2 provide reaction force for rotor 2 rotate provide it is additionalPower.
As shown in Figure 1, oil inlet pipe 111 is connected with oil pump（It is not shown in figure）, the outlet of oil pump is connected to oil inlet pipe 111,The import of oil pump is connected to flowline 118, when rotor oil duct, oil inlet pipe 111, flowline 118, the first oil duct 112, the second oil duct113 and oil pump in when being full of cooling oil, the liquid level of the cooling oil in casing 1 is less than the bottom of rotor 2, defeated using oil pump controlIt is fed into the speed of the speed of cooling oil and extraction cooling oil in casing 1, the amount of cooling oil in shell 11 is controlled, makes cooling oilFace is less than the lowermost end of rotor 2 so as to reduce the contact of cooling oil and rotor 2 in 1 cavity of casing, to reduce coolingOil increases motor performance and efficiency with to the resistance of rotor 2.
Specific working mode：When driving motor, starting oil pump makes cooling oil enter 112 He of the first oil duct from oil inlet pipe 111In second oil duct 113, cooling oil flow to end cap oil duct 121 by the first oil duct 112 and flows into again in fore bearing slot 122 and oil seal grooveIn 124, to which bearing and oil sealing 125 are cooled down.Cooling oil is flow in rear bearing groove 115 by the second oil duct 113 to rear axleIt holds and is cooled down, the second oil duct 113 is flow in atomizer 117 then in dividing oil duct 226, and countershaft 23 is cooled down, thenIt is flowing to connection oil duct 227 and every magnetic oil duct 228, rotor core 21 is being cooled down, be finally sprayed onto from every the outflow of magnetic oil duct 228On stator 13, stator 13 is cooled down.It flow to collecting tank 119 under gravity into the cooling oil in 1 cavity of casingIn, then the cooling oil in collecting tank 119 is sucked out by flowline 118 for oil pump.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the artMember can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at thisIt is all protected by Patent Law in the right of invention.