CN215186142U - Rotor core axial clamping assembly, rotor and motor - Google Patents

Abstract

The utility model provides a rotor core axial centre gripping subassembly, rotor and motor, rotor core axial centre gripping subassembly include two centre gripping components that set up in pairs, and each centre gripping component includes circular cover and follows the outside support pressure ring that radially extends of this circular cover by circular cover one end, and on each circular cover was used for the suit and was fixed in the rotor shaft, and two support pressure rings were used for respectively supporting on the terminal surface of pressing in rotor core's axial both ends. When the clamping device is used, the circular sleeves of the clamping elements are sleeved and fixed on the rotor shaft, so that the rotor core is clamped between the pressing rings of the two clamping elements, the two pressing rings are respectively pressed and pressed on the end faces of the two axial ends of the rotor core, and the elastic force can be generated in the axial direction to ensure the simple and reliable clamping effect on the rotor core, so that the size error caused in the rotor production process, the deformation and the creep generated in the operation process can be realized, and the sufficient tolerance is provided in the axial direction of the rotor shaft.

Description

Rotor core axial clamping assembly, rotor and motor

Technical Field

The utility model belongs to the technical field of electric drive equipment, especially, relate to a rotor core axial centre gripping subassembly, rotor and motor.

Background

The rotor of the motor includes a rotor shaft and a rotor core fixed to the rotor shaft, and the rotor core is generally a core lamination set formed by laminating steel sheets along the axial direction of the rotor shaft. Currently, under the condition that the iron core lamination group is not axially compressed, the iron core lamination group is easy to loosen during the operation of the rotor, so bolts and nuts are usually additionally arranged, the bolts sequentially penetrate through steel sheets of the iron core lamination group along the axial direction of the rotor shaft and are locked by the nuts, and thus the axial compression force is provided for the iron core lamination group. Because the bolt needs to penetrate through the rotor core (the iron core lamination group), the assembly is tedious, the time and the labor are wasted, the electromagnetic circulation is negatively affected, the requirement on the size precision of parts is high, the consistency of the pressing and the positioning of the iron core lamination group is difficult to guarantee, the size deviation of the iron core lamination group is large, and the dynamic unbalance of the rotor is large.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a can play the rotor core axial centre gripping subassembly of the tight effect of axial clamp to rotor core, reduce the rotor core installation degree of difficulty, guarantee that the iron core overlaps the piece group and compresses tightly the uniformity of location, reduce the rotor and move the unbalance amount.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a rotor core axial centre gripping subassembly for carry out the axial to the rotor core of rotor and press from both sides tightly, including two clamping component that set up in pairs, each clamping component include circular cover and by circular cover one end is followed the radial outside pressing ring that extends of this circular cover, each circular cover is used for the suit and is fixed in on the rotor shaft of rotor, and two pressing ring is used for supporting respectively in on the terminal surface at the axial both ends of rotor core, so that two pressing ring edge the axial of rotor shaft presss from both sides tightly rotor core.

Furthermore, the pressing ring is an annular pressing plate, a plurality of through holes are formed in the edge position, close to the outer peripheral face of the annular pressing plate, and the through holes are used for being embedded with cylindrical rods or tensioning pins to achieve material increase compensation of dynamic balance of the rotor.

Further, the through holes are arranged at equal intervals along the circumferential direction of the annular pressure plate.

Further, the circular sleeve is positioned on one side, facing the rotor core, of the pressing ring; or the round sleeve is positioned on one side of the pressing ring departing from the rotor core.

Further, the outside cover of pressing ring is equipped with first equalizer ring.

Furthermore, the circular sleeve is located on one side, away from the rotor core, of the pressing ring, and a second balance ring is sleeved on the outer peripheral surface of the circular sleeve.

Furthermore, the outer peripheral surface of the circular sleeve is sleeved with two second balance rings, and the two second balance rings are overlapped along the axial direction of the circular sleeve.

Further, the second balance ring is a low-magnetic-permeability or non-magnetic-permeability part made of a non-metal material which does not refract or reflect electromagnetic waves.

Another object of the embodiment of the utility model is to provide a rotor with rotor core axial centre gripping subassembly reduces the rotor core installation degree of difficulty, guarantees that iron core stack group compresses tightly the uniformity of location, reduces the rotor and moves the unbalance amount.

In order to achieve the above object, the utility model adopts the following technical scheme: an electric motor is provided, comprising a rotor shaft, a rotor core assembled on the rotor shaft, and a rotor core axial clamping assembly for axially clamping the rotor core.

Another object of the embodiment of the utility model is to provide a motor with rotor core axial centre gripping subassembly reduces the rotor core installation degree of difficulty, guarantees that iron core stack group compresses tightly the uniformity of location, reduces the rotor and moves the unbalance amount.

In order to achieve the above object, the utility model adopts the following technical scheme: an electric motor is provided comprising said rotor core axial clamping assembly or said rotor.

The embodiment of the utility model provides an in above-mentioned one or more technical scheme, compare with prior art, have one of following beneficial effect at least:

the embodiment of the utility model provides an in rotor core axial centre gripping subassembly, rotor and motor, rotor core axial centre gripping subassembly is when using, only need with the circular cover suit of each centre gripping component and be fixed in the rotor shaft on, make the rotor core centre gripping between two centre gripping components support the clamping ring, utilize two to support the clamping ring respectively to support to press and compress tightly on the terminal surface at rotor core's axial both ends, alright produce elastic force in the axial in order to guarantee the simple and reliable clamping effect to rotor core, can be to the dimensional error that rotor production process caused, the deformation and the creep that produce in the operation, sufficient tolerance nature has been provided in the axial of rotor shaft, and provide reliable fastening power counter-force radial, tangential and axial displacement. Therefore, the installation difficulty of the rotor core is reduced, the consistency of the compression and positioning of the core lamination set is ensured, and the dynamic unbalance of the rotor is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a rotor core axial clamping assembly according to a first embodiment of the present invention;

fig. 2 is a schematic perspective view of a rotor according to a first embodiment of the present invention;

fig. 3 is an exploded view of a rotor according to a first embodiment of the present invention;

fig. 4 is a schematic side view of a rotor according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view taken along line A-A of FIG. 4;

fig. 6 is a schematic perspective view of a clamping element according to a second embodiment of the present invention;

fig. 7 is a schematic cross-sectional structural view of a rotor according to a second embodiment of the present invention;

fig. 8 is a schematic perspective view of a clamping element according to a third embodiment of the present invention;

fig. 9 is a schematic cross-sectional structural view of a rotor according to a third embodiment of the present invention;

fig. 10 is a schematic perspective view of a clamping element according to a fourth embodiment of the present invention;

fig. 11 is a schematic cross-sectional structural view of a rotor according to a fourth embodiment of the present invention;

fig. 12 is a schematic perspective view of a clamping element according to a fifth embodiment of the present invention;

fig. 13 is a schematic cross-sectional structural view of a rotor according to a fifth embodiment of the present invention;

fig. 14 is a schematic perspective view of a clamping element according to a sixth embodiment of the present invention;

fig. 15 is a schematic cross-sectional structural view of a rotor according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a clamping element; 11-circular sleeve; 12-pressing the ring; 121-a through hole; 122-bayonet;

2-a rotor; 21-a rotor shaft; 22-rotor core;

3-a first gimbal; 4-second gimbal.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "connected" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 to fig. 15, an axial clamping assembly for a rotor core according to an embodiment of the present invention will be described. The embodiment of the utility model provides a rotor core axial centre gripping subassembly after assembling rotor 2's rotor shaft 21 on, plays the axial force effect to the radial outside region of rotor core 22 that can be to rotor 2, and rotor core axial centre gripping subassembly is applicable in carrying out the axial to rotor core 22 and presss from both sides tightly promptly to confrontation rotor core 22's fan-shaped scattering. Referring to fig. 1 to 3, the axial clamping assembly of the rotor core includes two clamping elements 1 arranged in pair, each clamping element 1 includes a circular sleeve 11 and a pressing ring 12 extending radially outward from one end of the circular sleeve 11 along the circular sleeve 11, each circular sleeve 11 is used for being sleeved and fixed on a rotor shaft 21 of the rotor 2, and the two pressing rings 12 are used for respectively pressing against end faces at two axial ends of the rotor core 22, so that the two pressing rings 12 clamp the rotor core 22 along the axial direction of the rotor shaft 21. When the clamping device is used, only the circular sleeves 11 of the clamping elements 1 are sleeved and fixed on the rotor shaft 21, so that the rotor core 22 is clamped between the pressing rings 12 of the two clamping elements 1, the two pressing rings 12 are respectively pressed and pressed on the end faces of the two axial ends of the rotor core 22, the two pressing rings 12 clamp the rotor core 22 along the axial direction of the rotor shaft 21, and further elastic force is generated in the axial direction to ensure simple and reliable clamping action on the rotor core 22, sufficient tolerance can be provided for dimensional errors caused in the production process of the rotor 2 and deformation and creep generated in operation in the axial direction of the rotor shaft 21, and reliable fastening force can be provided to resist radial, tangential and axial displacement.

The embodiment of the utility model provides a rotor core axial centre gripping subassembly, compared with the prior art, only need 11 suits of circular cover with each clamping element 1 and be fixed in on the rotor shaft 21, make rotor core 22 centre gripping between the clamping ring 12 of supporting of two clamping element 1, utilize two to support clamping ring 12 respectively to press and compress tightly on the terminal surface at rotor core 22's axial both ends, alright produce elastic force in the axial in order to guarantee the simple and reliable clamping effect to rotor core 22, can be to the dimensional error that rotor 2 production process caused, deformation and the creep that produce in the operation provide sufficient tolerance nature in the axial of rotor shaft 21, and provide reliable fastening force and counter radially, tangential and axial displacement. Therefore, the installation difficulty of the rotor core 22 is reduced, the consistency of the compression and positioning of the core lamination set is ensured, and the dynamic unbalance of the rotor 2 is reduced.

Referring to fig. 1, 3 and 6, in some embodiments, the pressing ring 12 is an annular pressing plate, a plurality of through holes 121 are formed on the annular pressing plate at a position close to an edge of an outer circumferential surface of the annular pressing plate, and the through holes 121 are used for inserting a cylindrical rod or a tensioning pin to achieve dynamic balance of the additive compensation rotor 2. In this embodiment, by adopting the above-mentioned scheme, a plurality of through holes 121 are formed in the annular pressing plate, and the plurality of through holes 121 are disposed near the edge of the outer peripheral surface of the annular pressing plate, so that a cylindrical rod or a tensioning pin can be placed in the through holes 121 to achieve the purpose of material increase compensation dynamic balance, thereby further reducing the dynamic unbalance of the rotor 2.

Referring to fig. 1, 3 and 6, in some embodiments, the through holes 121 are disposed at equal intervals along the circumferential direction of the annular pressure plate. In this embodiment, through adopting above-mentioned scheme, set up a plurality of through-holes 121 equally spaced along the circumference of annular clamp plate, can put into the cylindric stick or the tight round pin that rises in corresponding through-hole 121 according to actual need and reach the vibration-damping compensation dynamic balance purpose.

Referring to fig. 1, 8 and 12 in combination, in some embodiments, the circular sleeve 11 is located on the side of the pressure ring 12 facing the rotor core 22, i.e. the inner diameter formed flange for providing axial support force and acting as a centering for the shaft faces the rotor core 22, and the axial force is transmitted to the rotor shaft 21 through a friction connection by the flange (circular sleeve 11) formed on the inner diameter. Referring to fig. 6 and 10 in combination, in other embodiments, the circular sleeve 11 is located on the side of the pressure ring 12 facing away from the rotor core 22, and the inner diameter-shaped flange for providing the axial supporting force and centering the shaft is opposite to the rotor core 22, and the axial force is transmitted to the rotor shaft 21 through the friction connection by the flange (circular sleeve 11) formed on the inner diameter.

Referring to fig. 8, 9 and 10, in some embodiments, the first balance ring 3 is sleeved outside the pressing ring 12. In this embodiment, by adopting the above scheme, the first balance ring 3 is sleeved outside the pressing ring 12, and the first balance ring 3 can be made into a material reducing form in a milling or drilling manner to achieve the purpose of balance and dynamic balance. It can be understood that the first balance ring 3 is a low-permeability or non-permeability member made of a non-metallic material that does not refract or reflect electromagnetic waves, so as to reduce the permeability and conductivity of the first balance ring 3 and avoid negative effects on electromagnetic current. As can be understood, please refer to fig. 8 and fig. 10 in combination, in some embodiments, the pressing ring 12 is provided with a bayonet 122 for snapping and fixing the first balance ring 3, and only the first balance ring 3 needs to be snapped into the bayonet 122, so that the first balance ring 3 can be conveniently and quickly installed and fixed on the outer side of the pressing ring 12.

Referring to fig. 12 and 13, in some embodiments, the circular sleeve 11 is located on a side of the pressure-resisting ring 12 away from the rotor core 22, and the second balancing ring 4 is sleeved on an outer circumferential surface of the circular sleeve 11. In this embodiment, by adopting the above-mentioned scheme, the second balance ring 4 is sleeved on the outer peripheral surface of the circular sleeve 11 (inner diameter flange), and the second balance ring 4 has a reserved (definable) balance difference, so that the dynamic balance difference of the rotor 2 can be quickly compensated by rotating the first balance ring 3 and the second balance ring 4 in a targeted manner.

Referring to fig. 14 and 15, in some embodiments, two second balance rings 4 are sleeved on the outer circumferential surface of the circular sleeve 11, and the two second balance rings 4 are stacked along the axial direction of the circular sleeve 11. In this embodiment, by adopting the above-described configuration, two second balance rings 4 are fitted around the outer circumferential surface of the circular sleeve 11, that is, two second balance rings 4 are press-fitted to the inner diameter flange opposite to the rotor core 22, and the two second balance rings 4 have a predetermined (definable) balance difference, respectively, and by rotating the two second balance rings 4 in a targeted manner, the dynamic balance difference of the rotor 2 can be compensated for quickly.

In some embodiments, the second gimbal 4 is a low-permeability or non-permeability magnetic member made of a non-metallic material that does not refract or reflect electromagnetic waves. In this embodiment, by adopting the above scheme, the second gimbal 4 is a low-permeability or non-permeability member made of a non-metallic material that does not refract or reflect electromagnetic waves, so as to reduce the permeability and conductivity of the second gimbal 4, and avoid negative effects on electromagnetic circulation.

Referring to fig. 2, fig. 3 and fig. 5, in some embodiments, the embodiment of the present invention further provides a rotor 2, which includes a rotor shaft 21, a rotor core 22 assembled on the rotor shaft 21, and a rotor core axial clamping assembly for axially clamping the rotor core 22, where the rotor core axial clamping assembly is the rotor core axial clamping assembly provided in any of the above embodiments. The rotor 2 has all the technical features of the rotor core axial clamping assembly provided in any one of the above embodiments, so that the rotor core axial clamping assembly provided in any one of the above embodiments has the effect of the rotor core axial clamping assembly provided in any one of the above embodiments.

The embodiment of the utility model provides a still provide a motor, its rotor core axial centre gripping subassembly or rotor 2 that includes that any above-mentioned embodiment provides. Since the motor has all the technical features of the rotor core axial clamping assembly or the rotor 2 provided in any of the above embodiments, it has the effect of the rotor core axial clamping assembly or the rotor 2 provided in any of the above embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a rotor core axial centre gripping subassembly for carry out the axial to the rotor core of rotor and press from both sides tightly, its characterized in that, rotor core axial centre gripping subassembly is including two clamping component that set up in pairs, each clamping component include circular cover and by circular cover one end is followed the radial outside pressing ring that extends of this circular cover, each circular cover is used for the suit and is fixed in on the rotor shaft of rotor, and two pressing ring is used for supporting respectively and is pressed in on the terminal surface at rotor core's axial both ends, so that two pressing ring edge is supported the axial of rotor shaft presss from both sides tightly rotor core.

2. The axial clamping assembly for the rotor core according to claim 1, wherein the pressing ring is an annular pressing plate, a plurality of through holes are formed in the annular pressing plate at the edge position close to the outer circumferential surface of the annular pressing plate, and the through holes are used for being inserted with cylindrical rods or tensioning pins to achieve the dynamic balance of the material increase compensation rotor.

3. The rotor core axial clamping assembly of claim 2, wherein a plurality of said through holes are equally spaced circumferentially along said annular pressure plate.

4. The rotor core axial clamping assembly of claim 1 wherein said circular sleeve is located on a side of said compression ring facing said rotor core; or the round sleeve is positioned on one side of the pressing ring departing from the rotor core.

5. The rotor core axial clamping assembly of claim 1, wherein a first balancing ring is sleeved outside the pressure resisting ring.

6. The axial clamping assembly for a rotor core according to claim 1, wherein the circular sleeve is located on a side of the pressing ring away from the rotor core, and a second balance ring is sleeved on an outer circumferential surface of the circular sleeve.

7. The axial clamping assembly for a rotor core according to claim 6, wherein two second balance rings are sleeved on the outer circumferential surface of the circular sleeve, and the two second balance rings are stacked in the axial direction of the circular sleeve.

8. The rotor core axial clamping assembly of claim 6, wherein said second balancing ring is a low magnetic or non-magnetic conductive member made of a non-metallic material that does not refract or reflect electromagnetic waves.

9. A rotor comprising a rotor shaft, a rotor core assembled to the rotor shaft, and a rotor core axial clamping assembly for axially clamping the rotor core, wherein the rotor core axial clamping assembly is the rotor core axial clamping assembly according to any one of claims 1 to 8.

10. An electric motor comprising a rotor core axial clamping assembly according to any one of claims 1 to 8 or a rotor according to claim 9.

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