CN201054518Y

CN201054518Y - Motor rotor structure

Info

Publication number: CN201054518Y
Application number: CNU2007200071144U
Authority: CN
Inventors: 许建
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-23
Filing date: 2007-05-23
Publication date: 2008-04-30
Anticipated expiration: 2017-05-23

Abstract

The utility model relates to a cast mouse cage or wound motor rotor structure which is the piling of laminated sheets with shaft holes and rim alveoluses and the fixation of the laminated sheets on the rotor. Each laminated sheet is provided with more than two vent slotted holes which are symmetrically distributed on the same circumference. The laminated sheets improve the internal temperature of the rotor, keep the temperature conformable with the rotor clearance and reduce the dynamic unbalance caused by the partial temperature raising; under the condition that the balance of the laminated sheets is not changed. The displaced overlapping of the laminated sheets in the order of the quantity of the vent slotted holes can eliminate the static unbalance caused by the deviation of the laminated sheets, thereby ensuring the static balance of the rotor after the displaced overlapping. The combination of the two structures can produce a motor rotor which is good in the dynamic and static balance.

Description

Motor rotor construction

Technical field:

The utility model belongs to machine field, and particularly a kind of improvement of motor rotor construction makes it have higher static and dynamic equilibrium.

Background technology:

As everyone knows, the static and dynamic equilibrium of revolving part is related to problems such as equipment life, vibration, parts wear, idle work power consumption.Machine field, the static and dynamic equilibrium of rotor directly has influence on indexs such as bearing, caloric value, energy consumption transfer ratio, the balance that solves rotor at present all adopts the heavy way of increase and decrease, it can only reach dynamic relative equilibrium, after raising, temperature of rotor can break this balance again, the dynamic equilibrium when being difficult to accomplish work.The classical formulas of centrifugal force: Δ F from=Δ F to=Δ mV ²/ Δ r=Δ m Δ r4 π/T ², can learn centrifugal force F from, only relevant with m, r.On the same radius circumference of same rotary body, Δ F is from only relevant with Δ m, and for making its balance, Δ m must be consistent on the symmetric position of relative circumference.Existing motor can be divided into motor and generator two classes, but includes armature spindle and pile up lamination fixed thereon, and the punching of lamination edge has teeth groove, to place cable or cast mouse cage.General lamination is selected permeability magnetic materials such as silicon steel sheet or silicon steel sheet for use, is cut by the light sheet cold punching to form.

Producing lamination technology is on same mould, same punch press, presses vertically punching piecewise of material, thickness, ovality that the stator and rotor sheet that its punching is shaped is every, and the error of burr in its locus, has the consistency of height on three-dimensional position.Lamination armature axis hole edge also leaves fabrication hole, and this fabrication hole plays the alignment effect when being stacked into rotor, also promptly only needs the aligned process hole, and the teeth groove at its lamination edge aligns naturally.The equilibrium relation of lamination is to the balance of rotor, from the production technology of existing rotor as seen, there is unbalanced factor in itself, one, lamination sheet material is theoretic to be uniformly, but during actual rolling, drawing, all can have the inconsistent slight error of left and right thickness, because lamination is to become by a fixed-direction punching, so all there is conforming left and right sides error in all laminations; Its two, there is error equally in punching machine mold, can there be conforming burr in lamination equally.If lamination with these height conformity errors, when being stacked by fabrication hole is consistent, if small error promptly has been exaggerated, adopt the way of increase and decrease counterweight this moment, can be adjusted to dynamic relative equilibrium, but after machine operation, because actings such as line consumption, make the rotor temperature rise aggravation, temperature rise causes volume and radius change, has changed original sound attitude balance.The temperature rise uniformity that has solved rotor in theory also can be improved the sound attitude balance of rotor.

Summary of the invention:

The purpose of this utility model is the uniform motor rotor construction of a kind of lamination internal temperature rise of design, and its secondary objective is to change the stack of laminations structure, improves the imbalance that causes because of the lamination error.

Technical solutions of the utility model are achieved in that a kind of by the stack of laminations that offers axis hole and edge teeth groove and be fixed on armature spindle top casting mouse cage or motor rotor construction that winding forms, it is characterized in that lamination offers the slotted eye that ventilates more than two, branch structure distribution such as slotted eye one-tenth are on same circumference.The ventilation slotted eye is not changing under the lamination EQUILIBRIUM CONDITION, improves the internal rotor temperature rise, keeps consistent with the stator gap temperature, reduces local temperature rise and the dynamic unbalance that causes.

Described ventilation slotted eye number is the approximate number of rotor pack teeth groove number.

Each part lamination in the described rotor is docile and obedient preface and is stacked from armature spindle one end to another axle head angle that misplaces piecewise, this angle be 360 ° divided by the ventilation slot hole count.So both satisfied the alignment of teeth groove and the alignment of heat dissipation ventilation slotted eye, the effect of fabrication hole of can having held concurrently again of ventilation slotted eye is piled up for every lamination dislocation and is offered convenience.

The utlity model has reasonable in design, rotor temperature rise is even on symmetric position, reduce the contrast of static and dynamic equilibrium as far as possible, pass through the adjustment of lamination angle again, the rotor static balancing is cancelled out each other cross the lamination center of gravity error that quick-wearing produces with the punching and shearing die part, the rotor static balancing is guaranteed because of lamination sheet material is inhomogeneous.Thereby control dynamic equilibrium reaches minimum value, goes to zero.

Description of drawings:

Below in conjunction with concrete legend the utility model is described further:

Fig. 1 lamination stereogram

Fig. 2 lamination dislocation stacked relation stereogram

Fig. 3 rotor structure schematic diagram

Wherein

1-lamination 2-axis hole 3-teeth groove

4-ventilation slotted eye 5-technology groove 6-rotating shaft

The 7-mouse cage

Embodiment:

Form by a direction punching piecewise by material plate with reference to Fig. 1, rotor pack 1, thickness, ovality that the rotor pack that its punching is shaped is every, and the error of burr, in its locus, perhaps be consistent on the three-dimensional position, lamination 1 centre bit punching has axis hole 2, edge punching that teeth groove 3 and the ventilation slotted eye 4 of two above five equilibrium structure distribution on same circumference are arranged, and this figure is an example with three circular ventilation slotted eyes 4, for the directivity of recognizing lamination can remain with technology groove 5.This technology groove 5 can together constitute five equilibrium with ventilation slotted eye 4 and be distributed in ventilation slotted eye on the same circumference, and perhaps directly when punching ventilation slot 4, directly punching goes out a non-circular ventilation slot, can play the direction signs effect equally.Above-mentioned ventilation slotted eye 4 can be as figure poroid, also can be the groove shape, can decide according to concrete design of electrical motor index, satisfy the need of ventilation and heat.

See figures.1.and.2, the number of ventilation slotted eye 4 is the approximate number of rotor pack 1 teeth groove number, and when guaranteeing that 4 dislocation of ventilation slotted eye are piled up, ventilation slotted eye 4 also can be consistent.Each part lamination 1 in the rotor is docile and obedient preface and is stacked from armature spindle one end to another axle head angle that misplaces piecewise, this angle be 360 ° divided by the ventilation slot hole count.As Fig. 2, ventilation slotted eye 4 quantity are three, every lamination misplaces 120 ° successively, and the quantity that rotor piles up lamination 1 is the integral multiple of ventilation slotted eye 4 quantity, as Fig. 2, ventilation slotted eye 4 quantity are three, just can reach static balance after promptly needing three laminations 1 or three integral multiple lamination overlapping.Dislocation is piled up and can be eliminated because of lamination material plate or punching error, even the existence of fabrication hole 5 equally can reach balanced arrangement.Fig. 2 is the balance example of a group, and its integral multiple piles up and is fixed on the armature spindle, die casting motlten metal mouse cage the full rotor structure.

A described lamination comprises a slice lamination at least.In order to simplify production technology, some laminations can be stacked as one in the same way, as minimum stacked wafer cells, then each stacked wafer cells piles up by the equal angles dislocation again, can reach the purpose of compensating error equally.Each part lamination can be a slice lamination, also can be two, three or the like, and every number of laminations is good within 20.As Fig. 2, three laminations can be understood as three laminations.If total lamination number of a rotor is 240, every lamination is 20, and promptly three laminations are a balance group, and promptly the rotor that only needs dislocation can be combined into balance for 12 times piles up.

With reference to Fig. 3, lamination 1 dislocation is stacked in the rotating shaft (or dummy shaft) 6, and then cast motlten metal mouse cage 7 or embedding cable winding form rotor integral body.Owing to offer ventilation slotted eye 4 on the lamination 1, lamination inner ventilation performance is strengthened greatly, temperature rise is even, need not when the casting mouse cage, to be located at the fan blade at two ends, and adopt dislocation to pile up lamination, eliminated the equilibrium problem that the lamination error causes, can omit the increase and decrease reprovision at mouse cage two ends and heavily follow closely, the cast rotor of mouse cage, necessary fine finishining is carried out at two ends can reach orthostatic rotor; And because the design of lamination inner ventilation slotted eye makes temperature rise even, as long as after reaching static balancing, its dynamic equilibrium is also guaranteed.

In addition on the lamination basis that above-mentioned dislocation is stacked, be docile and obedient preface again and misplace one piecewise less than 5 angles of spending from armature spindle one end to another axle head, pile up back lamination teeth groove curl, its casting mouse cage or embed cable after the structure of Fig. 3, each stator teeth groove can corresponding three to five rotor teeth groove like this, and vice versa.

Claims

1. one kind by stack of laminations and be fixed on armature spindle top casting mouse cage or motor rotor construction that winding forms, it is characterized in that lamination offers the slotted eye that ventilates more than two, and branch structure distribution such as slotted eye one-tenth are on same circumference.

2. motor rotor construction according to claim 1, the number of the slotted eye that it is characterized in that ventilating is the approximate number of rotor pack teeth groove number.

3. motor rotor construction according to claim 1 and 2 is characterized in that each the part lamination in the rotor, be docile and obedient preface and be stacked from armature spindle one end to another axle head angle that misplaces piecewise, this angle be 360 ° divided by the ventilation slot hole count.

4. motor rotor construction according to claim 3 is characterized in that the quantity that rotor piles up lamination is the integral multiple of ventilation slot hole count.

5. motor rotor construction according to claim 3 is characterized in that each part lamination comprises a slice lamination at least.

6. motor rotor construction according to claim 3, the lamination that it is characterized in that misplacing and be stacked is docile and obedient preface again and is misplaced one piecewise less than 5 angles of spending from armature spindle one end to another axle head, piles up back lamination teeth groove curl.