阅读说明：本技术 一种去重法校正动平衡的电机转子 (Motor rotor for correcting dynamic balance by weight removal method ) 是由 杨家国 胡俊杰 于 2019-10-14 设计创作，主要内容包括：一种去重法校正动平衡的电机转子,其包括转轴(1)、紧定螺母(2)、止动垫圈(3)、第一去重环(4)、转子铁芯(5)、第二去重环(6),其特征在于：第一去重环(4)、第二去重环(6)分别设置于转子铁芯的两侧端面,第一去重环的另一端通过止动垫圈、紧定螺母固定在转轴上,第二去重环的另一端与转轴上的台阶部端面相配合,或第二去重环的另一端也通过止动垫圈、紧定螺母固定在转轴上。平衡量校正方便,便于安装/拆卸,不存在平衡量固定零部件,节约安装空间,安全可靠,可显著提高电机的转速适应性。(The utility model provides a remove heavy method and rectify dynamic balance's electric motor rotor, its includes pivot (1), lock nut (2), lock washer (3), first heavy ring (4), rotor core (5), second remove heavy ring (6), its characterized in that: first heavy ring (4), second heavy ring (6) set up respectively in rotor core's both sides terminal surface, and the other end of first heavy ring that goes is fixed in the pivot through lock washer, lock nut, and the other end of second heavy ring that goes cooperatees with the epaxial step part terminal surface of pivot, or the other end of second heavy ring that goes also is fixed in the pivot through lock washer, lock nut. The balance is convenient to correct, convenient to install/dismantle, safe and reliable, and the rotating speed adaptability of the motor can be obviously improved, and no balance fixing part exists.)

1. The utility model provides a remove heavy method and rectify dynamic balance's electric motor rotor, its includes pivot (1), lock nut (2), lock washer (3), first heavy ring (4), rotor core (5), second remove heavy ring (6), its characterized in that: first heavy ring (4), second heavy ring (6) set up respectively in rotor core's both sides terminal surface, and the other end of first heavy ring that goes is fixed in the pivot through lock washer, lock nut, and the other end of second heavy ring that goes cooperatees with the epaxial step part terminal surface of pivot, or the other end of second heavy ring that goes also is fixed in the pivot through lock washer, lock nut.

2. The motor rotor for correcting dynamic balance by the weight removing method according to claim 1, wherein a plurality of first vent holes (9) and a plurality of second vent grooves (10) are arranged on the first weight removing ring and/or the second weight removing ring, the first vent holes are waist-shaped holes, the second vent grooves are arc-shaped grooves/semicircular grooves, the plurality of second vent grooves are positioned on the periphery of the first weight removing ring and/or the second weight removing ring, the plurality of first vent holes are positioned on the radial inner side of the second vent grooves, a rotating shaft through hole is arranged in the center of the weight removing ring, and a key groove is arranged on the rotating shaft through hole; the first vent holes and the second vent grooves correspond to the first hole parts and the second hole parts respectively.

3. The motor rotor for correcting dynamic balance by the weight removing method according to claim 2, wherein two axial end faces of the first weight removing ring and/or the second weight removing ring are flush.

4. The rotor of an electric motor for corrective dynamic balancing by means of weight removal according to claim 2, characterized in that an axial end face of said first and/or second weight removal ring is provided with a recessed portion (11) having the shape of a circular ring, in which a fastening nut and a stop washer are mounted/fixed, the end face of the fastening nut not exceeding the corresponding end face of the recessed portion.

5. The rotor of the motor for correcting the dynamic balance by the weight removing method according to claim 2, wherein a plurality of step parts (12) are arranged on one axial end face of the first weight removing ring and/or the second weight removing ring, the axial width dimension of the step parts (12) is gradually increased from the radial inner side to the radial outer side, a stop washer matching surface (13) is arranged between the rotating shaft through hole of the first weight removing ring and/or the second weight removing ring and the step parts, and the step surface of the step part (12) is a punching and weight removing area of the weight removing ring.

6. The rotor of an electric motor for correcting dynamic balance by a weight-reducing method according to claim 1, wherein the rotor core is provided with a plurality of first holes (7) and a plurality of second holes (8), the first holes and the second holes are ventilation holes, and the shapes of the first holes and the second holes are different.

7. The rotor of an electric machine for corrective dynamic balancing by a de-weighting method as set forth in claim 2, wherein said tightening nut is threaded on an inner circumference and has a plurality of grooves on an outer circumference; the outer periphery of the stop washer has a plurality of radial projections (31) and the inner periphery has one or more axial projections (32).

8. The rotor of an electric machine with corrective dynamic balance for removing weight of claim 1, wherein said first and/or second removal ring is made of copper.

Technical Field

The invention relates to the field of motor rotors, in particular to a motor rotor with a weight-removing method for correcting dynamic balance.

Background

In order to reduce noise and vibration indexes of the motor, the motor rotor needs to correct dynamic balance, and the requirement for the unbalance amount of the motor rotor is increased along with the increase of the rotating speed of the motor.

At present, the following methods are used for correcting the dynamic balance of the motor: aiming at a conventional motor, the motor rotor dynamic balance correction is performed by a method of drilling a hole on the front end of the motor and adding a balance ring on the rear end of the motor, and the balance weight is fixed through a bolt; for a motor with higher rotating speed, because the reliability of a motor rotor is considered, the balance weight cannot be simply fixed by bolts, and the motor rotor is easy to fall off, the dynamic balance is usually corrected by adding a dovetail groove on a fan at the front end of the motor and adding a dovetail groove balance weight at a related position at the rear end, and the dynamic balance is corrected by a method of removing weight on the motor rotor.

The motor rotor with dynamic balance corrected by adopting the de-weighting mode can adapt to the rotation at high rotating speed, and the safety and reliability are greatly improved. There are often places on the rotor core where material can be removed by machining, such as for claw pole machines where material can be removed on the claw poles. However, for a motor with no material removed on a rotor core, how to perform dynamic balance is a key technical point, and in order to solve the problem that the motor rotor with no material removed on the rotor core or the motor rotor with no material removed on the rotor core corrects the dynamic balance, the motor rotor with the weight removing ring is designed to meet the correction requirement of the dynamic balance.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides the motor rotor for correcting the dynamic balance by the de-weighting method, is convenient to correct the balance amount, convenient to mount/dismount, free of balance amount fixing parts, safe and reliable (high in connection structure strength, good in structural stability and capable of reducing the possibility of stress damage at the through hole of the rotating shaft and capable of remarkably improving the rotating speed adaptability of the motor, saves mounting space and is safe and reliable.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a remove heavy method and rectify dynamic balance's electric motor rotor, its includes pivot (1), lock nut (2), lock washer (3), first heavy ring (4), rotor core (5), second remove heavy ring (6), its characterized in that: first heavy ring (4), second heavy ring (6) set up respectively in rotor core's both sides terminal surface, and the other end of first heavy ring that goes is fixed in the pivot through lock washer, lock nut, and the other end of second heavy ring that goes cooperatees with the epaxial step part terminal surface of pivot, or the other end of second heavy ring that goes also is fixed in the pivot through lock washer, lock nut.

Furthermore, a plurality of first vent holes (9) and a plurality of second vent grooves (10) are arranged on the first weight removing ring and/or the second weight removing ring, the first vent holes are waist-shaped holes, the second vent grooves are arc-shaped grooves/semicircular grooves, the plurality of second vent grooves are positioned on the periphery of the first weight removing ring and/or the second weight removing ring, the plurality of first vent holes are positioned on the radial inner side of the second vent grooves, a rotating shaft through hole is formed in the center of the weight removing ring, and a key groove is formed in the rotating shaft through hole; the first vent holes and the second vent grooves correspond to the first hole parts and the second hole parts respectively.

Further, the axial two end faces of the first weight removing ring and/or the second weight removing ring are flush.

Furthermore, one axial end face of the first weight removing ring and/or the second weight removing ring is provided with a groove part (11), the groove part is in a ring shape, a fastening nut and a stop washer are installed/fixed in the groove part, and the end face of the fastening nut does not exceed the corresponding end face of the groove part.

Furthermore, a plurality of step parts (12) are arranged on one axial end face of the first weight removing ring and/or the second weight removing ring, the axial width size of the step parts (12) is gradually increased from the radial inner side to the radial outer side, a stop washer matching surface (13) is arranged between the rotating shaft through hole of the first weight removing ring and/or the second weight removing ring and the step parts, and the step surface of the step part (12) is a weight removing ring punching and removing area.

Furthermore, the rotor core is provided with a plurality of first holes (7) and a plurality of second holes (8), the first holes and the second holes are ventilation holes, and the shapes of the first holes and the second holes are different.

Further, the inner circumference of the tightening nut is provided with threads, and the outer circumference is provided with a plurality of grooves; the outer periphery of the stop washer has a plurality of radial projections (31) and the inner periphery has one or more axial projections (32).

Further, the first heavy removal ring and/or the second heavy removal ring are/is processed by adopting a copper material.

The motor rotor comprises a rotor core, a first de-weighting ring, a second de-weighting ring, a stop washer, a fastening nut and a rotating shaft, wherein the de-weighting rings are respectively arranged at two ends of the rotor core, holes are formed in the de-weighting rings according to the actual condition of unbalance when the motor rotor corrects dynamic balance, the unbalance of the rotor is adjusted by a material removing method, and the dynamic balance is corrected. And the two ends of the motor rotor core are respectively provided with a weight removing ring, and the dynamic balance of the rotor is corrected by adjusting the weight of the weight removing ring. The heavy-duty ring is made of copper.

This electric motor rotor of dynamic balance is rectified to method of removing heavies, the equilibrium volume is rectified conveniently, and the installation/dismantlement of being convenient for does not have the fixed spare part of equilibrium volume, practices thrift installation space, and safe and reliable (connection structure intensity is high, reduces the impaired possibility of pivot through-hole department stress, and structural stability is good), can show the rotational speed adaptability that improves the motor.

Drawings

FIG. 1 is a front view of a rotor of the motor of the present invention;

FIG. 2 is a side view of a rotor of the motor of the present invention;

FIG. 3 is a side view of the clinch nut of the present invention;

FIG. 4 is a front view of the stop washer of the present invention;

FIG. 5 is a side view of the stop washer of the present invention;

FIG. 6 is a side view of a rotor core of the present invention;

FIG. 7 is a side view of a first embodiment of the de-weight ring of the present invention;

FIG. 8 is a front view of a second embodiment of the de-weight ring of the present invention;

FIG. 9 is a front, side view of a third embodiment of the de-weighting ring of the present invention.

In the figure: the rotor core comprises a rotating shaft 1, a fastening nut 2, a stop washer 3, a first weight-removing ring 4, a rotor core 5, a second weight-removing ring 6, a first hole portion 7, a second hole portion 8, a first vent hole 9 (waist-shaped hole), a second vent groove 10 (arc-shaped groove/semicircular groove), a groove portion 11, a step portion 12, a stop washer matching surface 13, a radial protruding portion 31 and an axial protruding portion 32.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-9, a motor rotor for correcting dynamic balance by a weight-removing method includes a rotating shaft 1, a fastening nut 2, a lock washer 3, a first weight-removing ring 4, a rotor core 5, and a second weight-removing ring 6, where the first weight-removing ring 4 and the second weight-removing ring 6 are respectively disposed on two side end faces of the rotor core 5, the other end of the first weight-removing ring 4 is fixed on the rotating shaft 1 through the lock washer 3 and the fastening nut 2, the other end of the second weight-removing ring 6 is matched with an end face of a step portion on the rotating shaft 1, or the other end of the second weight-removing ring 6 is also fixed on the rotating shaft 1 through the lock washer 3 and the fastening nut 2.

The tightening nut 2 has a thread on its inner circumference and a plurality of grooves on its outer circumference. The stop washer 3 has a plurality of radial protrusions 31 on its outer circumference and one or more axial protrusions 32 on its inner circumference for mounting/fixing.

Rotor core 5 is provided with a plurality of first holes 7 and a plurality of second holes 8, first holes 7 and second holes 8 are ventilation holes, and first holes 7 and second holes 8 have different shapes.

As shown in fig. 7-9, the first weight removing ring 4 and/or the second weight removing ring 6 are provided with a plurality of first vent holes 9 and a plurality of second vent grooves 10, the first vent holes 9 are waist-shaped holes, the second vent grooves 10 are arc-shaped grooves/semicircular grooves, the plurality of second vent grooves 10 are located on the periphery of the first weight removing ring 4 and/or the second weight removing ring 6, the plurality of first vent holes 9 are located on the radial inner side of the second vent grooves 10, the center of the weight removing ring is provided with a rotating shaft through hole, and the rotating shaft through hole is provided with a key groove; the first vent holes 9 and the second vent grooves 10 correspond to the first hole portions 7 and the second hole portions 8, respectively. The axial two end faces of the first and/or second deadweight ring 4, 6 are flush.

In an embodiment, an axial end face of the first and/or second deduplication ring 4, 6 is provided with a groove portion 11. The groove portion 11 is in a ring shape, a fastening nut 2 and a stop washer 3 are mounted/fixed in the groove portion 11, the fastening nut 2 and the stop washer 3 are located in the groove portion 11, the end face of the fastening nut 2 does not exceed the corresponding end face of the groove portion 11, and mounting space is saved under the condition that the dynamic balance of the de-weight correction is guaranteed.

In another embodiment, a plurality of step portions 12 are arranged on one axial end face of the first counterweight ring 4 and/or the second counterweight ring 6, the axial width dimension of the step portions 12 gradually increases from the radial inner side to the radial outer side, a stop washer matching surface 13 is arranged between a rotating shaft through hole of the counterweight ring and the step portions 12, the stop washer matching surface 13 is matched with the stop washer 3 during installation/fixation, and the step surfaces of the step portions 12 are perforated counterweight areas of the counterweight ring.

The front weight-removing ring 4, the rotor iron core 5 and the rear weight-removing ring 6 are pressed on the rotating shaft 1 and fixed by flat keys to prevent rotation, and the front end of the front weight-removing ring is fixed by the fastening nut 2 and the stop washer 3 to prevent axial movement. In order not to influence the air path of the motor, the weight removing rings 4 and 5 are provided with ventilation holes consistent with the rotor core. In order not to influence the magnetic circuit of the motor, the weight removing rings 4 and 5 at two ends of the rotor core 5 are made of non-magnetic materials, in order to better correct the dynamic balance of the rotor, the weight removing rings are made of materials with high density, materials which are easy to remove during the correction of the dynamic balance are taken into consideration, materials which are convenient to process are adopted, the weight removing rings 4 and 5 are machined by copper plates with the thickness of H, the weight removing rings 4 and 5 are identical, and the weight removing rings are respectively arranged at two ends of the rotor core 5. When the whole rotor is corrected to be in dynamic balance, the unbalance amount of the rotor is adjusted by continuously removing materials on the weight removing ring according to the detected unbalance amount until the unbalance amount requirement is met.

The two ends of the rotor core are respectively provided with a weight removing ring, and the weight removing rings have the characteristics of high density, no magnetic conduction, convenience in processing and the like, so that the weight removing rings are processed by copper materials, and the rotor core and the balance ring are pressed on the rotating shaft and are reliably fixed by flat keys, tightening nuts and stop washers. When the dynamic balance is corrected, the weight of the weight removing ring is removed by adopting a drilling method according to the unbalance amount of the rotor, so that the aim of correcting the dynamic balance is fulfilled.

The working principle of the invention is as follows: the weight of the weight-removing ring is changed to adjust the unbalance amount of the whole rotor, and finally the requirement of the unbalance amount of the rotor is met.

The invention has the technical effects that: the balance is corrected conveniently, and the installation/dismantlement of being convenient for does not have the fixed spare part of balance, practices thrift installation space, and safe and reliable (connection structure intensity is high, reduces the impaired possibility of pivot through-hole department stress, and structural stability is good), can show the rotational speed adaptability that improves the motor.

The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.