CN110971050A - Combined end cover for motor and motor with combined end cover - Google Patents
Combined end cover for motor and motor with combined end cover Download PDFInfo
- Publication number
- CN110971050A CN110971050A CN201811139490.8A CN201811139490A CN110971050A CN 110971050 A CN110971050 A CN 110971050A CN 201811139490 A CN201811139490 A CN 201811139490A CN 110971050 A CN110971050 A CN 110971050A
- Authority
- CN
- China
- Prior art keywords
- mounting
- frame body
- motor
- end cover
- rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
Abstract
The invention discloses a combined end cover for a motor and a motor with the combined end cover, wherein the combined end cover for the motor comprises: a cover body having a bearing chamber and a support rod extending outward in a radial direction of the bearing chamber from an outer circumferential wall of the bearing chamber; the mounting frame includes: the stator mounting lug is arranged on the frame body; the thickness adjusting part is clamped between the frame body and the supporting rod, and the frame body is detachably connected with the supporting rod. According to the combined end cover for the motor, the rotors with different bearing spans can be flexibly adapted, the development and production efficiency of the end cover can be improved through modular production, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a combined end cover for a motor and a motor with the combined end cover.
Background
In the motor, the end cover is a key component and plays a plurality of roles: support and protect the rotor, connect stator and other motor body parts, connect outside operational environment.
As the demands on quality of life increase, the problems of vibration and noise of the motor become more and more important.
The motor easily excites low-order mode resonance of the rotor when running at high speed, resulting in serious vibration noise problem. The vibration mode of the low-order mode of the rotor is mainly represented by bending with the bearing position as a fulcrum, and the most effective method for avoiding the rotor resonance is to adjust the bearing span.
The working rotating speeds of the motor in different working environments are different, so that the excitation frequencies are different, and a proper bearing span needs to be selected according to the working rotating speeds to avoid exciting rotor resonance and obtain the best sound vibration performance.
Existing motor end caps are typically of one-piece end cap construction, which must also be redesigned as the bearing span is adjusted, greatly increasing development and manufacturing costs. And the integral end cover structure is too single, and can not make independent change to each functional module according to actual need, also can not match different external installation environment in a flexible way.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the invention to propose a modular end cover for an electrical machine which enables a flexible adaptation to rotors with different bearing spans.
The invention also provides a motor with the combined end cover for the motor.
According to the embodiment of the invention, the combined end cover for the motor comprises: a cover body having a bearing chamber and a support rod extending outward in a radial direction of the bearing chamber from an outer peripheral wall of the bearing chamber; a mounting frame, the mounting frame comprising: the stator mounting lug is arranged on the frame body; the thickness adjusting piece is clamped between the frame body and the supporting rod, and the frame body is detachably connected with the supporting rod.
According to the combined end cover for the motor, the thickness adjusting piece is added, so that the end cover can be matched with rotors with different bearing spans, the rotor resonance is avoided, the problems of vibration and noise of the motor are solved, meanwhile, the combined end cover can realize modular development and production of the end cover, the development and production efficiency of the end cover is improved, and the production cost is reduced.
According to the combined end cover for the motor, the frame body is provided with the screw rod, the combined end cover further comprises the nut, and the nut is connected with the screw rod and used for fastening the frame body and the supporting rod.
Further, the thickness adjusting piece is annular and is sleeved on the screw rod.
Optionally, a first mounting plane facing the support rod is formed on the frame body, the screw rod extending towards the support rod is arranged on the first mounting plane, the support rod is provided with a second mounting plane facing the first mounting plane, and the thickness adjusting piece is clamped between the first mounting plane and the second mounting plane.
Optionally, the support bar comprises:
a rod body, a radially inner end of the rod body being connected to the bearing chamber;
the mounting block is arranged at the radial outer end of the rod body, the orientation of the mounting block is towards the surface of the frame body, the second mounting plane is formed, the surface of the mounting block, deviating from the frame body, is a third mounting plane, the nut is suitable for being pressed against the third mounting plane, and a through hole for penetrating the screw rod is formed in the mounting block.
Further, the support rod further includes: the reinforcing ribs are arranged on two sides of the rod body, the radial inner ends of the reinforcing ribs are connected with the bearing chamber, and the radial outer ends of the reinforcing ribs extend to the junction of the rod body and the mounting block.
Optionally, the peripheral wall of the frame body comprises: a thinning section and a thickening section, the end face of the thickening section facing the support bar being configured as the first mounting plane.
Further, the stator mounting lug is arranged on the outer peripheral surface of the frame body and connected with the thickened section, and the stator mounting lug is further provided with a reinforcing vertical plate which is arranged at two ends of the thickened section.
Optionally, the thinning section and the thickening section are both multi-sections and are connected in a staggered manner along the circumferential direction of the frame body, at least one of the stator mounting lugs is further connected with a motor mounting lug, and the motor mounting lug is further connected with two reinforcing vertical plates connected with the motor mounting lug on the stator mounting lug.
According to the combined end cover for the motor, the frame body is provided with the positioning spigot matched with the stator protrusion.
Optionally, the thickened section is curved towards the inside of the frame body.
According to a second aspect of the invention, there is provided a composite end cover for an electrical machine as defined in any one of the first aspects. The motor and the combined end cover for the motor have the same advantages compared with the prior art, and the detailed description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a modular end cap for an electric machine according to an embodiment of the present invention;
FIG. 2 is an exploded view of the modular end cap of FIG. 1;
FIG. 3 is a bottom view of the cover of FIG. 2;
FIG. 4 is a top view of the mounting frame of FIG. 2;
fig. 5 is a schematic view of the assembly of a combined end cap and stator and rotor for an electric machine according to an embodiment of the invention.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
A modular end cap 10 for an electrical machine according to an embodiment of the present invention is described below with reference to fig. 1-5. As shown in fig. 1 to 5, a composite end cap 10 for an electric machine according to an embodiment of the present invention includes: lid 1, installation frame 2 and thickness adjustment piece 3.
As shown in fig. 1 and 2, the cover body 1 has a bearing chamber 11 and a plurality of support rods 12, the support rods 12 extend from the outer peripheral wall 111 of the bearing chamber 11 radially outward of the bearing chamber 11, and the plurality of support rods 12 are radially distributed on the outer peripheral wall 111 of the bearing chamber 11, so that the connection of the cover body 1 to the mounting frame 2 is achieved by the plurality of support rods 12.
The mounting frame 2 may include: frame body 21 and the stator installation ear 22 of setting on frame body 21 can realize spacing and the fastening to stator 5 through stator installation ear 22, and frame body 21 links to each other with bracing piece 12 detachably to realize the modularization development and the production of end cover 10, each part design and manufacturing are nimble, are favorable to the modularization development and the manufacturing of motor 100, reduction in production cost.
The thickness adjusting piece 3 is clamped between the frame body 21 and the support rod 12, and the thickness adjusting piece 3 can be adjusted as required, so that the end cover 10 can be matched with rotors with different bearing intervals, and the flexibility is improved.
According to the combined end cover 10 for the motor provided by the embodiment of the invention, the thickness adjusting piece 3 is added, so that the end cover 10 can be matched with rotors with different bearing spans, the rotor resonance is prevented from being excited, the problems of vibration and noise of the motor 100 are solved, meanwhile, the combined end cover 10 can realize the modular development and production of the end cover 10, the development and production efficiency of the end cover 10 is improved, and the production cost is reduced.
In the description of the present invention, "a plurality" means two or more.
According to an embodiment of the present invention, as shown in fig. 2, the frame body 21 may be provided with a screw 21211, and the combined end cap 10 may further include a nut 4, the nut 4 is connected to the screw 21211 and fastens the frame body 21 to the support rod 12, so that the nut 4 and the screw 21211 cooperate to fix the frame body 21 and the cover 1, and the connection is convenient and secure.
As shown in fig. 2, the thickness adjusting member 3 may be annular and is sleeved on the screw 21211, alternatively, the thickness adjusting member 3 may have a circular cross section, and certainly, the thickness adjusting member 3 may also be an adjusting member having a cross section of another shape, and the middle area of the thickness adjusting member 3 is provided with a first screw through hole 31, and the minimum distance between the hole wall of the first screw through hole 31 and the outer peripheral wall 111 of the thickness adjusting member 3 is not less than one fifth of the hole diameter of the first screw through hole 31, so as to ensure the strength and rigidity of the thickness adjusting member 3. The screw 21211 is in clearance fit with the first screw through hole 31, and the screw 21211 passes through the first screw through hole 31 and then is fitted with the nut 4.
Specifically, as shown in fig. 2 to 4, a first mounting plane 2121 facing the support rod 12 is formed on the frame body 21, a screw 21211 extending toward the support rod 12 is provided on the first mounting plane 2121, the support rod 12 has a second mounting plane 1221 facing the first mounting plane 2121, a thickness adjusting piece 3 is sandwiched between the first mounting plane 2121 and the second mounting plane 1221, further, the first mounting plane 2121 is located in the same horizontal plane, the second mounting plane 1221 is located in the same horizontal plane, the thickness of the limiting block is determined according to the bearing position, and the thickness adjusting pieces 3 used on the same combined end cap 10 have the same thickness, thereby ensuring that each plane of the combined end cap 10 in the axial direction of the stator 5 is kept horizontal, and improving the accuracy of the end cap 10 in adjusting the bearing span of the rotor.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
Further, as shown in fig. 2, the support rod 12 may include: a rod body 121 and a mounting block 122, wherein the radially inner end of the rod body 121 is connected to the bearing chamber 11, the rod body 121 extends obliquely downward from the outer peripheral wall 111 of the bearing chamber 11 in a direction away from the bearing chamber 11, the mounting block 122 is disposed at the radially outer end of the rod body 121, the face of the mounting block 122 facing the frame body 21 is configured as a second mounting plane 1221, the face of the mounting block 122 facing away from the frame body 21 is a third mounting plane 1222, and the nut 4 is adapted to be pressed against the third mounting plane 1222, whereby the supporting face of the nut 4 can be increased, the connection strength can be improved, and the mounting block 122 is provided with a second screw through hole 1223, which is a through hole for passing the screw 21211, that is, the screw 21211 on the first mounting plane 2121 passes through the first screw through hole 31 on the thickness adjusting piece 3 and the second screw through hole 1223 on the mounting block 122 and then is connected to the nut 4, so that the mounting frame 2 and the cover 1 are connected.
Further, as shown in fig. 2, the support rod 12 may further include: the two reinforcing ribs 123 are arranged on the two sides of the rod body 121, the radial inner end of each reinforcing rib 123 is connected with the bearing chamber 11, and the radial outer end of each reinforcing rib 123 extends to the junction of the rod body 121 and the mounting block 122, so that the strength of the supporting rod 12 can be effectively increased through the reinforcing ribs 123. Meanwhile, as shown in fig. 2 and 3, a reinforcing plate 124 may be further connected between the radial inner ends of adjacent two support rods 12, and the reinforcing plate 124 may be an arc-shaped plate, thereby being beneficial to improving the support strength of the support rods 12.
As shown in fig. 4, the peripheral wall of the frame body 21 may include: the thinning sections 211 and the thickening sections 212 are multiple sections and are connected in a staggered manner along the circumferential direction of the frame body 21, as can be seen from fig. 4, the thinning sections 211 are four sections and form four side walls of the frame body 21, the thickening sections 212 are located at the junctions of two adjacent thinning sections 211, and the thickening sections 212 can be bent towards the inner side of the frame body 21. This makes it possible to make the overall size of the frame body 21 small and compact.
Further, an end surface of the thickened section 212 facing the support rod 12 is configured as a first mounting plane 2121, the stator mounting lug 22 is disposed on an outer circumferential surface of the frame body 21 and connected to the thickened section 212, a threaded mounting hole 222 may be disposed on the stator mounting lug 22, and a threaded fastener such as a bolt may pass through the threaded mounting hole 222 to be connected to the frame body 21 on the other end cover 10. Therefore, the stator 5 can be limited and fastened through the stator mounting lugs 22.
Optionally, as shown in fig. 2 and 4, two reinforcing vertical plates 221 may be further disposed on the stator mounting lug 22, and the two reinforcing vertical plates 221 may be respectively disposed at two ends of the thickened section 212, so that the reinforcing vertical plates 221 may effectively reinforce the strength of the stator mounting lug 22, and prevent the stator mounting lug 22 from being damaged due to an excessive tightening force of the threaded fastener.
Further, as shown in fig. 2 and 4, the outer side of at least one of the stator mounting lugs 22 may further be connected with a motor 100 mounting lug, the motor 100 mounting lug is further connected with two reinforced vertical plates 221 on the stator mounting lug 22 connected thereto, and a motor 100 mounting hole may be disposed on the motor 100 mounting lug, and the aperture of the motor 100 mounting hole is larger than that of the threaded mounting hole 222, so that the motor 100 may be mounted and fixed in an external mounting environment through the motor 100 mounting hole, and the mounting is firm and the connection is convenient.
According to an embodiment of the present invention, as shown in fig. 2, the frame body 21 may further be provided with a positioning spigot 24 that is convexly engaged with the stator 5, the positioning spigot 24 extends downward from the lower surface of the stator mounting lug 22 and is configured as an arc-shaped plate, and the outer peripheral surface of the stator 5 is attached to the inner side wall of the thinning section 211, so that the frame body 21 and the stator 5 can be better attached to each other, and the stator 5 can be better protected.
The invention also provides a motor 100, wherein the motor 100 comprises the combined end cover 10 for the motor, and the combined end cover 10 can be adopted by both the upper end cover 6 and the lower end cover 7 of the motor 100. Fig. 5 is a schematic view showing an assembly of a stator 5 and a rotor of the motor 100 and the combined end cover 10, wherein the stator 5 is disposed in a space defined by the upper end cover 6 and the lower end cover 7, the rotor is disposed in the stator 5, an end of the rotor protrudes out from the bearing chamber 11 of the cover body 1, the rotor bearing is fitted in the bearing chamber 11, an outer peripheral wall 111 of the bearing chamber 11 plays a role of radially supporting the rotor bearing, and a bottom plate 112 on the bearing chamber 11 plays a role of axially supporting the rotor bearing. The stator mounting ears 22, the upper peripheral wall of the frame body 21 and the positioning spigot 24 play a role in limiting and mounting and fastening the stator 5, so that the motor 100 is assembled.
In summary, according to the combined end cover 10 for the motor in the embodiment of the present invention, only the thickness of the thickness adjusting member 3 needs to be adjusted to enable the end cover 10 to match with the rotors with different bearing spans, in the motor 100 provided by the present invention, since the combined end cover 10 in the embodiment of the present invention is used for both the front end cover 10 and the rear end cover 10, the positions of the front bearing and the rear bearing of the rotor can be flexibly adjusted without changing the relative positions of the rotor and the stator 5.
Meanwhile, the cover body 1 and the mounting frame 2 are separated from each other to play different roles, so that modular development and production of each part according to functional requirements are facilitated, and a new idea of improving development and production efficiency and reducing cost is provided.
The specific configurations of other components of the motor 100, such as the stator 5 and the rotor, etc., according to embodiments of the present invention, are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A modular end cap for an electric machine, comprising:
a cover body having a bearing chamber and a support rod extending outward in a radial direction of the bearing chamber from an outer peripheral wall of the bearing chamber;
a mounting frame, the mounting frame comprising: the stator mounting lug is arranged on the frame body;
the thickness adjusting piece is clamped between the frame body and the supporting rod, and the frame body is detachably connected with the supporting rod.
2. The combined end cover for the motor according to claim 1, wherein a screw is disposed on the frame body, and the combined end cover further comprises a nut, wherein the nut is connected with the screw and fastens the frame body and the support rod.
3. The modular end cap for an electrical machine of claim 2 wherein the thickness adjuster is annular and fits over the threaded rod.
4. The combined end cover for the motor according to claim 3, wherein a first mounting plane facing the support rod is formed on the frame body, the first mounting plane is provided with the screw rod extending towards the support rod, the support rod is provided with a second mounting plane facing the first mounting plane, and the thickness adjusting member is sandwiched between the first mounting plane and the second mounting plane.
5. The modular end cap for an electrical machine of claim 4, wherein the support bar comprises:
a rod body, a radially inner end of the rod body being connected to the bearing chamber;
the mounting block is arranged at the radial outer end of the rod body, the orientation of the mounting block is towards the surface of the frame body, the second mounting plane is formed, the surface of the mounting block, deviating from the frame body, is a third mounting plane, the nut is suitable for being pressed against the third mounting plane, and a through hole for penetrating the screw rod is formed in the mounting block.
6. The modular end cap for an electrical machine of claim 5, wherein the support rod further comprises:
the reinforcing ribs are arranged on two sides of the rod body, the radial inner ends of the reinforcing ribs are connected with the bearing chamber, and the radial outer ends of the reinforcing ribs extend to the junction of the rod body and the mounting block.
7. The modular end cap for an electrical machine of claim 4, wherein the peripheral wall of the frame body comprises: a thinning section and a thickening section, the end face of the thickening section facing the support bar being configured as the first mounting plane.
8. The combined end cover for the motor according to claim 7, wherein the stator mounting lug is disposed on the outer circumferential surface of the frame body and connected to the thickened section, and the stator mounting lug is further provided with a reinforcing vertical plate disposed at two ends of the thickened section.
9. The modular end cap for an electrical machine of claim 8 wherein said thinned sections and said thickened sections are multi-segmented and are staggered circumferentially along said frame body, wherein at least one of said stator mounting ears is further connected to a motor mounting ear, said motor mounting ear is further connected to two of said reinforcing risers on said stator mounting ear to which it is connected.
10. The modular end cap for an electrical machine of claim 1 wherein the frame body is provided with locating spigots that mate with the stator projections.
11. The modular end cap for an electrical machine of claim 7 wherein the thickened section is curved inwardly of the frame body.
12. An electrical machine comprising a composite end cap for an electrical machine according to any of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811139490.8A CN110971050A (en) | 2018-09-28 | 2018-09-28 | Combined end cover for motor and motor with combined end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811139490.8A CN110971050A (en) | 2018-09-28 | 2018-09-28 | Combined end cover for motor and motor with combined end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110971050A true CN110971050A (en) | 2020-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811139490.8A Pending CN110971050A (en) | 2018-09-28 | 2018-09-28 | Combined end cover for motor and motor with combined end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110971050A (en) |
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Application publication date: 20200407 |
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