CN205986561U

CN205986561U - Balanced end plate of electric motor rotor

Info

Publication number: CN205986561U
Application number: CN201620916195.9U
Authority: CN
Inventors: 向金权
Original assignee: CHONGQING RONGXUAN MECHANICAL & ELECTRICAL Co Ltd
Current assignee: CHONGQING RONGXUAN MECHANICAL & ELECTRICAL Co Ltd
Priority date: 2016-08-22
Filing date: 2016-08-22
Publication date: 2017-02-22
Anticipated expiration: 2026-08-22

Abstract

The utility model provides a balanced end plate of electric motor rotor, including the end plate body, end plate body center department is equipped with a through -hole that passes through that can make electric motor rotor, one side of end plate body is radial ground and evenly is provided with a plurality of rings of little lugs of detachable, is located the big or small the same of the same little lug that circles, diminishes gradually from the little lug of outer lane to inner circle, and equal mark is located to the little lug of the inner circle on every radiation radius has corresponding position angle. The balancing weight setting of the most likely balanced end plate of this balance plate is more intensive, and optional goes to heavy position more nimble, and that treats the selection goes layer upon layer magnitude more, and the position of balancing weight is directly perceived readable to simply, accurate and realize the balanced of electric motor rotor rapidly and rectify.

Description

Balancing end plate for motor rotor

Technical field

This utility model is related to machine field and in particular to a kind of carry out rotor dynamic balance calibration in duplicate removal mode Balance end plate.

Background technology

In general, motor is made up of stator and rotor two parts, and stator and rotor are folded collection by silicon steel chip respectively and formed Iron core constitute.Single stator is circular, is folded the stator core that constitutes of collection by lamination cylindrical.Rotor is cylindric, Rotor is pressed directly on bent axle to be placed in the cylinder cavity of stator core, and rotor and stator have air-gap to be separated by.On stator Be embedded with the winding that enamel-covered wire is coiled into, stator winding outer source current by when produce magnetic field.Rotor when there being electric current to pass through, with Stator field interacts, and produces electromagnetic torque and rotates in stator.

Ideally, rotor rotates and do not rotate the pressure that bearing is produced is identical, and this revolving body is balance Revolving body.But, when the material due to rotor is uneven, the error of process and assemble and some other factor, lead to rotor When rotated, the centrifugal force that each particle on rotor produces can not be cancelled out each other.This centrifugal action not being cancelled On bearing, vibration can be caused, produce noise and simultaneously accelerate bearing wear, the short life-span of part, damaging property when serious Accident.Therefore, rotor needs to correct the revolving body that can become a balance after the completion of assembling.

At present, the dynamic balance running of rotor is commonly used decomposes two ends of rotor face (test face) by increasing by amount of unbalance Weight or the mode of duplicate removal are carried out, according to dynamically balanced calculating, eper=(Gx1000)/(n/10), uepr=(w*eper)/ (2*r), wherein, eper represents degree of unbalancedness, and uneven grade is G, and generally for general rotor, G takes 6.3 or higher 2.5 grades, n represents the working speed of motor, and uepr represents workpiece and allows residual unbalance, and w represents rotor weight, and r represents Two increasings of balance end, the equilibrium radius of loss of weight amount.When being tested using balancing machine, be typically both needed to be manually entered G, n, W, r, dynamic balancing machine just obtains the parameter index of both ends of the surface counterweight balance on existing dynamic balancing machine after calculating：M (required The weight of test end face increase and decrease), (during with rotor certain point for 0 degree, increase and decrease needed for r as radius weighs the angle at position to θ Value), and be visually displayed on screen, testing crew just can according to the content of display, rapid determine required for duplicate removal or It is weight and its relevant position of loss of weight.Certainly also there is the weight that can immediately arrive at increase and decrease weight position than the equipment of higher-end Amount, angle and r value, that is, r value need not input occurrence in advance, and without being limited to, adjustable weight on concrete circumference is flat to reach Weighing apparatus.Based on above-mentioned principle, existing rotor dynamic balance running, typically rotor corrected using balance clay and to keep balance, to put down Weighing apparatus clay is easy to use, curing rate than very fast, but after life-time service, balance clay easily depart from rotor fly out so that Rotor recovers unbalanced state in stator again, produces vibration；On the other hand, because the installation gap of rotor extremely has Limit, the unbalanced position of minority, if plus the clay of counterweight, it is susceptible to interfere, now, then need will be in place for clay institute again The aequum putting place is decomposed, and because aequum is a vector, in addition to size, itself also has direction, therefore decomposes to get up Also cumbersome, and the clay position after decomposing cannot may be pasted outside rotor at all；Existing part turns Son is close to, using in two ends of rotor, the dynamic balancing that rotor to be realized by one block of balance plate, and for example, number of patent application is 2015108567325 Chinese patent describes a kind of entitled " rotor dynamic balance structure and rotor dynamic balancing control method " Rotor balancing structures and methods, this rotor dynamic balance structure, including rotor, both sides are provided with balance to rotor vertically Plate, described balance plate is provided with multiple balance pipes, and described balance pipe inwall is provided with screw thread, described part or all of balance in the hole It is provided with mass screw, when needing adjusting dynamic balance performance, mass screw is tightened balance pipe.Such structures and methods Dynamic balancing regulation for rotor is very convenient, but there is also its weak point, because, in actual production, motor The fluctuation of amount of unbalance scope is very big, and it is different from the rotor of the cylindrical shape of rule after machining, rotor ferrum Can there is certain error in core and magnetic shoe processing itself, particularly with the rotor core of superposing type, each punching is superimposed and causes Cumulative error very big, and the site error when assembling magnetic shoe for the rotor core more can increase the amount of unbalance of whole rotor, Rotor is led to have very big amount of unbalance scope.Therefore, on existing balance plate, the balancing weight of setting (such as balances spiral shell Nail) it is not enough to cut down the amount of unbalance of rotor, due to the weight balancing hole site and corresponding balancing weight pre-setting It is limited in scope, fully counterweight balance correction can't be carried out to most of rotors, and cannot be intuitively from balance end The position of adjustable weight is found out on plate.

Utility model content

For solving above-mentioned technical problem, the utility model proposes a kind of balancing end plate for motor rotor, this balance end plate Balancing weight setting is more intensive, and selectable duplicate removal position is more flexible, and duplicate removal gravimetric value to be selected is more, and the position of balancing weight Put intuitively readable, thus simply, accurately and promptly realizing the balance correction of rotor.

For achieving the above object, this utility model employs following technical scheme：

A kind of balancing end plate for motor rotor, including end plate body, described end plate body center is provided with and can make rotor The through hole that passes through of axle, the side of described end plate body radially is evenly arranged with the dismountable small lugs of some circles, position The size of the small lugs on same circle is identical, tapers into from outer ring to the small lugs of inner ring, on each radiation radius All it is marked with relevant position angle at the small lugs of inner ring.

Further, described small lugs are cylinder, and each cylinder is axially inserted with taper into dismountable the successively One small column and the second small column.

Further, between described cylinder and end plate body, between the first small column and cylinder, the second small column and first All using thread connection between small column.

Further, described balancing end plate for motor rotor is the balance end plate of micromachine, and described small lugs are with end plate originally Junction between body by integral forming and small lugs and end cap body is provided with the shallow seam of a circle.

Further, described position angle is with the end plate body center of circle as limit, is sat with small lugs position point for pole The polar angle of punctuate.

Beneficial effect：Compared to prior art, this utility model has been uniformly arranged multi-turn small boss in the one side of end plate, It is balanced correcting after the completion of assembling, when finding uneven, according to the duplicate removal quality of display, position angle on dynamic balancing machine, Remove one or several small boss in relevant position or adjacent position, make rotor reach revolution balance.This balance side Formula is simple to operation, the radiation arrangement of balancing weight (small boss) multi-turn, is specially provided with intuitively readable position on balance end plate again Angle, according to existing balance correction equipment, because operator just presets the mounted balance end of two ends of rotor before experiment The initial zero degree Angle Position of plate is 0 degree of position of this balance end plate, therefore just can be according to the duplicate removal quality of display, position on balancing machine Angle setting degree directly removes small lugs on balance end plate, greatly increases balance efficiency, is difficult the special of elimination for some Amount of unbalance then can be gone to required using taking out adjacent small lugs to complete on same radiation radius line to a greater extent The actual amount of unbalance falling is close；Meanwhile, small lugs can be effectively prevented to be thrown out of using thread connection, it is to avoid to put down using traditional Weighing apparatus clay, solves the problems, such as that in rotor operation process, balanced structure lost efficacy.Meanwhile, this balance end plate is additionally favorable for motor and turns Son dynamic balance calibration in use is safeguarded.

Brief description

The structural representation of the balancing end plate for motor rotor that Fig. 1 provides for this utility model.

Fig. 2 is the A A sectional view of Fig. 1.

Fig. 3 is a kind of structural representation of small lugs.

Brief description：End plate body 1, small lugs 2, cylinder 201, the first small column 202, the second small column 203.

Specific embodiment

In order that the technological means of this utility model realization, creation characteristic, reached purpose and effect are more clear and are easy to Understand, with reference to the accompanying drawings and detailed description this utility model is further elaborated：

As shown in figure 1, the utility model proposes a kind of balancing end plate for motor rotor, including end plate body 1, this end plate is originally Body 1 is a circular sheet, and described end plate body 1 center is provided with the through hole that the axle of rotor can be made to pass through, circular sheet Side is also equipped with raised round platform, and this through hole runs through circular sheet and round platform, forms one section of slightly long cylindrical hole, so that more preferably Ground and axle cooperation, the side of the end plate body 1 being located in round platform radially is evenly arranged with some circle small lugs 2, is located at Same circle on small lugs 2 size identical, the small lugs 2 from outer ring to inner ring taper into, weight, inner circle little Projection 2 is nearer apart from spindle central, can offset amount of unbalance less, can be used for fine setting when balance correction, more Go weight values close to optimal amount of unbalance to limits.Additionally, according to existing balance correction equipment, because operator is in experiment The front initial zero degree Angle Position (zero phase) needing to preset the mounted balance end plate of two ends of rotor, therefore, spy is at each All it is marked with relevant position angle, one position of setting is the 0 of this balance end plate at the small lugs 2 of the innermost circle on radiation radius Degree position, then uniformly be superimposed angle, formed each go reuse small lugs 2 directly readable phase angle so that balance examination Test data out when, directly the small lugs 2 of corresponding position can be taken off, find specifically which is little convex without going to calculate Block 2 should be removed.

Further, small lugs 2 include cylinder 201 as described in Figure 3, each cylinder 201 is axially inserted with successively radius by Little dismountable first small column 202 of gradual change and the second small column 203, and all cylinders are all coaxial.One small lugs 2 by Dismountable three parts compositions, and every moiety by weight is different so that at the trial, selective removal some, two roundlets Post or whole small lugs 2 remove, thus removing more suitably counterweight, the effect of lifting balance correction.

Further, between described cylinder 201 and end plate body 1, between the first small column 202 and cylinder 201, second is little All using thread connection between cylinder 203 and the first small column 201, while convenient dismounting, improve each weight member again Solid and reliable degree.

Further, due to its small volume, load is light, and its balance end plate can adopt injection moulding integrated molding for micromachine, Or the junction between aluminum casting molding, and small lugs 2 and end cap body 1 is provided with the shallow seam of a circle, in order to need to go Directly with tweezers or pliers, small lugs 2 are broken disconnected, removal during weight.

Further, described position angle is with end plate body 1 center of circle as limit, with small lugs 2 position point as pole The polar angle of coordinate points.Certainly, position angle is the angle value of a mark position, every small lugs 2 position of can determine Angular divisions method all can adopt, and adopt polar angle value herein, be because relatively convenient.

Finally illustrate, above example only in order to the technical solution of the utility model to be described and unrestricted, although ginseng According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent, the objective without deviating from technical solutions of the utility model and model Enclose, it all should be covered in the middle of right of the present utility model.

Claims

1. a kind of balancing end plate for motor rotor, including circular end plate body, described end plate body center is provided with and can make motor Through hole that the axle of rotor passes through it is characterised in that：The side of described end plate body radially is evenly arranged with some circles can The small lugs of dismounting, the size of the small lugs on same circle is identical, tapers into from outer ring to the small lugs of inner ring, each All it is marked with relevant position angle at the small lugs of the innermost circle on radiation radius.

2. it is characterised in that described small lugs are cylinder, each justifies balancing end plate for motor rotor according to claim 1 Axially it is inserted with dismountable first small column tapering into and the second small column successively on post.

3. balancing end plate for motor rotor according to claim 2 it is characterised in that between described cylinder and end plate body, All using thread connection between first small column and cylinder, between the second small column and the first small column.

4. balancing end plate for motor rotor according to claim 1 is it is characterised in that described balancing end plate for motor rotor is micro- The balance end plate of type motor, described small lugs and end plate body are integrally formed and the junction between small lugs and end cap body sets There is the shallow seam of a circle.

5. balancing end plate for motor rotor according to claim 1 is it is characterised in that described position angle is with end plate body The center of circle is limit, with small lugs position point for the polar angle of polar coordinate point.