CN214707334U - Direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment - Google Patents
Direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment Download PDFInfo
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- CN214707334U CN214707334U CN202120443894.7U CN202120443894U CN214707334U CN 214707334 U CN214707334 U CN 214707334U CN 202120443894 U CN202120443894 U CN 202120443894U CN 214707334 U CN214707334 U CN 214707334U
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Abstract
The utility model discloses a direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment, which comprises a radial plate, wherein the radial plate is of a disc-shaped structure and extends to one side along the radial plate to form a sheath, and the sheath encloses a columnar space; the splice bar, splice bar circumference interval distribution is in the sheath is inboard, just the splice bar along the radial direction of sheath extends, and with the radials link to each other. The utility model discloses a stirring and mixing apparatus are with directly driving formula permanent magnet synchronous motor rotor core, through setting up the splice bar of connecting sheath and radials, and then can further reduce the weight of rotor to reduce the inertia of rotor at the operation in-process, in order to increase the performance of motor.
Description
Technical Field
The utility model belongs to the technical field of permanent-magnet machine, especially, relate to a stirring and mixing apparatus are with directly driving formula PMSM rotor core.
Background
Direct-drive permanent magnet synchronous motors are commonly used in stirring and mixing equipment, wherein the permanent magnet synchronous direct-drive motors are revolutionary products along with the continuous development and maturity of low-speed large-torque permanent magnet motor technology and intelligent control technology. The product overturns the traditional driving connection mode, cancels intermediate transition links such as a speed reducer and the like, directly drives the load, simplifies a transmission chain, improves the system efficiency, reduces the energy consumption, is simple and convenient to install and has less maintenance.
1. Working principle of permanent magnet synchronous direct drive motor
The permanent magnet synchronous direct drive motor is an alternating current motor, the stator part of the permanent magnet synchronous direct drive motor is similar to an asynchronous motor, and the permanent magnet synchronous direct drive motor is designed in multiple stages only through different winding modes and stages. The air gap field of the motor is generated by rare earth neodymium iron boron, and the rotor can generate a strong inherent magnetic field without an excitation magnetic field. The rotor magnetic field interacts with the electromagnetic field generated by the stator coil after being electrified, so that a very large resultant force output is generated.
2. Advantages of permanent magnet direct drive motor
The permanent magnet motor is easy to realize multi-pole number and low rotating speed, and can replace the original asynchronous motor and a gear box system to realize direct drive. The direct drive system composed of the permanent magnet direct drive motors has the advantages of high transmission efficiency, small occupied space, basically no maintenance and the like, and is widely applied to occasions of using equipment such as stirring equipment, belt conveyors, ball mills, injection molding machines and the like.
The rotor in the existing permanent magnet motor is formed by laminating a plurality of silicon steel sheets, and has large mass and high inertia.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide a stirring of lightweight and mixing apparatus with directly driving formula permanent magnet synchronous motor rotor core.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment comprises
The spoke plate is of a disc-shaped structure, and extends to one side along the spoke plate to form a sheath, and the sheath encloses a columnar space;
the splice bar, splice bar circumference interval distribution is in the sheath is inboard, just the splice bar along the radial direction of sheath extends, and with the radials link to each other.
The splice bar, splice bar circumference interval distribution is in the sheath is inboard, just the splice bar along the radial direction of sheath extends, and with the radials link to each other.
The utility model discloses a stirring and mixing apparatus are with directly driving formula permanent magnet synchronous motor rotor core, through setting up the splice bar of connecting sheath and radials, and then can further reduce the weight of rotor to reduce the inertia of rotor at the operation in-process, in order to increase the performance of motor.
Preferably, a plurality of blind holes are formed in the circumferential wall of the outer side of the sheath.
Preferably, a plurality of reinforcing ribs distributed at intervals in the circumferential direction are further arranged on the spoke plate.
Preferably, the reinforcing ribs are arranged in the same radial direction of the sheath as the connecting ribs.
Preferably, the radials are provided with transmission ports for shafts to pass through, and the inner walls of the transmission ports are further provided with rotation stopping grooves communicated with the transmission ports.
Preferably, be equipped with the wheel core on the radials, the wheel core is for along the tubular structure that the axial direction extension of sheath formed, the transmission mouth with the groove equipartition of splining is in on the wheel core.
Preferably, the strengthening rib with the circumference wall in the wheel core outside links to each other, and along the wheel core extremely on the radial direction of radials outside circumference wall, the strengthening rib terminal surface extremely the distance of radials terminal surface reduces gradually.
Preferably, a plurality of lightening holes are further formed in the wheel disc, and the lightening holes are arranged at intervals along the circumferential direction of the wheel disc.
Preferably, if the height of the sheath is a, the thickness of the spoke is b, the thickness of the wheel core is c, and the thickness of the connecting rib is d, then the ratio of a: d ═ 140-: (10-20): (70-90): (60-80).
Preferably, the direct-drive permanent magnet synchronous motor rotor core for the stirring and mixing equipment is integrally formed.
To sum up, compared with the prior art, the utility model, have following advantage.
1. The direct-drive permanent magnet synchronous motor rotor core for the stirring and mixing equipment is integrally formed, and the manufacturing process is simple.
2. The connecting ribs are used for connecting the radial plates and the protective sleeve, so that the overall mass of the direct-drive permanent magnet synchronous motor rotor core for the whole stirring and mixing equipment is reduced, and the inertia of the direct-drive permanent magnet synchronous motor rotor core for the stirring and mixing equipment in the operation process is reduced.
3. Through the strengthening rib, can increase the intensity of radials, and strengthening rib and wheel core link to each other, and then can increase the intensity of wheel core part, and then under the circumstances of guaranteeing the partial intensity of wheel core, reduce the thickness of radials.
4. The reinforcing ribs and the connecting ribs are arranged in the same radial direction, so that the strength of the connecting parts of the connecting ribs and the spoke plates can be increased.
5. The spoke plate is provided with a plurality of lightening holes, so that the weight of the spoke plate can be further reduced.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a cross-sectional view taken at a-a in fig. 2.
Fig. 4 is an isometric cross-sectional view taken at a-a of fig. 2.
Fig. 5 is an enlarged view of a portion a in fig. 4.
Fig. 6 is a cross-sectional view taken along line B-B of fig. 2.
Fig. 7 is a schematic structural diagram of another embodiment of the present invention.
Detailed Description
In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.
In a first embodiment, referring to fig. 1 to 6, a rotor core of a direct-drive permanent magnet synchronous motor for a stirring and mixing device includes a rotor core body 10, the rotor core body 10 includes a sheath 1 and a spoke plate 2, the spoke plate 2 is a disc-shaped structure, the bottom of the spoke plate 2 extends downwards to form the sheath 1, the sheath 1 is a cylindrical structure and encloses a cylindrical space, and the spoke plate 2 is disposed inside the cylindrical space enclosed by the sheath 1. Rotor core body 10 still includes that the equidistant distribution of circumference is in a plurality of splice bars 3 of sheath inboard, splice bar 3 one end with the inner wall of sheath 1 links to each other, the other end with the outside of radials 2 links to each other. Further, the connecting ribs 3 extend along the radial direction of the sheath 1 and are connected with the web 2.
The outside of sheath 1 is equipped with a plurality of blind holes 11, be equipped with the screw thread on the inner wall of blind hole 11, just the bottom inner wall of blind hole 11 is the toper, and then can fixing bolt in the blind hole 11, and then can fix the magnet steel in the circumference outside of sheath 1 through this blind hole.
The outside of sheath 1 still is equipped with annular 12, the head and the tail both ends of sheath 1 all are equipped with annular 12, annular 12 is close to the inside wall of 1 tip of sheath is outside protruding, forms annular convex part 121.
The central point of radials 2 puts and still is equipped with wheel core 21, wheel core 21 arranges the axle center position of radials 2, wheel core 21 is for along the circumferential direction of sheath 1 is towards the tubular structure that the both ends of radials 2 extend, and then the center of wheel core 21 is equipped with the transmission mouth 211 that supplies the axle to pass, still be equipped with on the inner wall of transmission mouth 211 with the spline groove 212 that transmission mouth 211 communicates each other, just the spline groove 212 is equipped with two, and the symmetry is located on the inner wall of transmission mouth 211. In practical designs, the size of the drive port 211 may be varied to accommodate shafts of different diameters depending on the size of the shaft.
The spoke plate 2 is further provided with a plurality of reinforcing ribs 22 which are distributed at equal intervals in the circumferential direction, the reinforcing ribs 22 are arranged in the radial direction of the sheath 1 which is the same as the connecting ribs 3, and further, the directions of the head ends of the reinforcing ribs 22 pointing to the tail end are all corresponding to the directions of the head ends of the connecting ribs 3 pointing to the tail end. So that the reinforcing ribs 22 are arranged just at the portion of the web where the web is connected to the connecting ribs to increase the strength of the web 2 at this portion and increase the strength of the whole. The strengthening rib 22 with the lateral wall of wheel core 21 links to each other, just strengthening rib 22 for form in protruding muscle on the radials 2, this strengthening rib 22 one end and wheel core 21's lateral wall link to each other, and along wheel core 21 extremely on the radial direction in the 2 outsides of radials, strengthening rib 22 tip extremely the distance of the 2 tip of radials reduces gradually, so can be on the basis of guaranteeing wheel core 21 intensity, reduce the thickness of radials 2 to reduce the weight of whole rotor core body.
The spoke plate 2 is further provided with a plurality of lightening holes 23, and the lightening holes 23 are arranged at intervals along the circumferential direction of the spoke plate. In the present exemplary embodiment, only one weight-reduction opening is provided between two circumferentially adjacent reinforcing struts 22, but in other exemplary embodiments, weight-reduction openings can also be provided in other ways.
The circumference lateral wall of radials 2 still is equipped with annular protrusion 24, annular protrusion 24 is the convex part of radials 2 week side edge, strengthening rib 22 one end with wheel core 21 links to each other, the other end with annular protrusion 24 links to each other.
Further, the two ends of the connecting rib 3 are respectively provided with a first connecting portion 31 and a second connecting portion 32. Specifically, the longitudinal section of the connecting rib 3 is square, the connecting rib 3 and the sheath 1 are connected to form a first connecting portion 31, the head end and the tail end of the first connecting portion 31 are provided with arc-shaped chamfer portions, and the width of the first connecting portion 31 is smaller than that of the middle portion of the connecting rib 3. The connecting rib 3 and the part that the radials 2 link to each other form second connecting portion 32, and the head and the tail both ends of second connecting portion 32 have convex chamfer portion, and then the width of second connecting portion 32 is less than the width of connecting rib 3 middle part. And the end part of the connecting rib 3 slightly protrudes out of the spoke plate 2 and the end surface of the sheath 1, so that the connecting rib 3, the spoke plate 2 and the sheath 1 are connected through the first connecting part 31 and the second connecting part 32, and the part is not protruded.
The whole rotor core body 10 is integrally formed, and further, if the height of the sheath is a, the thickness of the spoke plate is b, the thickness of the wheel core is c, and the thickness of the connecting rib is d, then the ratio of a: d ═ 140-: (10-20): (70-90): (60-80).
Second embodiment, as shown in fig. 7, in the first embodiment, the weight of the entire web is reduced by the weight-reducing holes provided in the web, and the weight-reducing holes of the first embodiment are circular. In order to further reduce the weight of the web plate, the web plate may be configured as follows, because in order to ensure the connection strength between the wheel core 21a and the shaft, the wheel core 21 needs to be configured to have a cylindrical structure protruding from the end face of the web plate, and in order to further increase the strength of the whole web plate 2, a plurality of reinforcing ribs need to be circumferentially arrayed on the web plate, so that the reinforcing ribs divide the web plate into a plurality of small fan-shaped blocks, and in the first embodiment, the lightening holes are just arranged in the small fan-shaped blocks divided by the reinforcing ribs.
In this embodiment, by changing the shape of the lightening hole, further, the shape of the lightening hole 23a is changed to a shape that fits with the small fan-shaped blocks separated by the reinforcing rib, so as to further reduce the weight of the wheel plate 2, and in order to ensure the connection strength of the wheel plate 2, a plurality of reinforcing blocks 202 are further provided at the portion corresponding to the lightening hole 23a, one end of each reinforcing block 202 is connected with the wheel core 21a, the other end is connected with the wheel plate 2, and the reinforcing blocks 202 are located in the radial direction corresponding to the lightening hole 23a, and the reinforcing blocks 202 are provided with chamfered portions, thereby forming the inclined first inclined surface 2021.
Further, in order to strengthen the strength of the edge of the spoke plate 2, an annular protrusion 24 at one end is arranged on the edge, the tail end of the reinforcing rib is connected with the annular protrusion 24, in order to ensure the strength of the part provided with the lightening hole 23a, a fan-shaped rib block 201 is also required to be arranged, the rib block 201 is a protrusion extending along the circumferential direction of the outer side of the spoke plate along the lightening hole 23a, the rib block 201 is arranged in the radial direction corresponding to the lightening hole 23a, a chamfer part is arranged on the rib block 201, and then an inclined second inclined surface 2011 is formed.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Claims (10)
1. A direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment is characterized by comprising
The spoke plate is of a disc-shaped structure, and extends to one side along the spoke plate to form a sheath, and the sheath encloses a columnar space;
the splice bar, splice bar circumference interval distribution is in the sheath is inboard, just the splice bar along the radial direction of sheath extends, and with the radials link to each other.
2. The rotor core of the direct-drive permanent magnet synchronous motor for the stirring and mixing equipment as claimed in claim 1, wherein a plurality of blind holes are formed on the circumferential wall outside the sheath.
3. A direct drive permanent magnet synchronous motor rotor core for a mixing and stirring apparatus as claimed in claim 1, wherein said web is further provided with a plurality of ribs circumferentially spaced apart.
4. A direct drive permanent magnet synchronous motor rotor core for a stirring and mixing device according to claim 3, wherein the reinforcing ribs are arranged in the same radial direction of the sheath as the connecting ribs.
5. The rotor core of the direct-drive permanent magnet synchronous motor for the stirring and mixing equipment as claimed in claim 3, wherein a transmission port for a shaft to pass through is formed in the web, and a rotation stopping groove communicated with the transmission port is further formed in the inner wall of the transmission port.
6. The rotor core of the direct-drive permanent magnet synchronous motor for the stirring and mixing equipment as claimed in claim 5, wherein a wheel core is arranged on the web, the wheel core is a cylindrical structure extending along the axial direction of the sheath and protruding out of the end face of the web, and both the transmission port and the rotation stopping groove are arranged on the wheel core.
7. The rotor core of the direct-drive permanent magnet synchronous motor for the stirring and mixing equipment as claimed in claim 6, wherein the reinforcing ribs are connected with the circumferential wall outside the wheel core, and the distance from the end faces of the reinforcing ribs to the end faces of the spoke plate is gradually reduced along the radial direction from the wheel core to the circumferential wall outside the spoke plate.
8. A direct drive permanent magnet synchronous motor rotor core for a stirring and mixing device according to claim 1, wherein a plurality of lightening holes are further provided on the web, and the lightening holes are arranged at intervals along the circumferential direction of the web.
9. The rotor core of the direct-drive permanent magnet synchronous motor for the stirring and mixing equipment as claimed in claim 6, wherein if the height of the sheath is a, the thickness of the spoke is b, the thickness of the wheel core is c, and the thickness of the connecting rib is d, then a: d ═ 140-: (10-20): (70-90): (60-80).
10. The direct-drive permanent magnet synchronous motor rotor core for the stirring and mixing device according to any one of claims 1 to 9, wherein the direct-drive permanent magnet synchronous motor rotor core for the stirring and mixing device is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120443894.7U CN214707334U (en) | 2021-03-01 | 2021-03-01 | Direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120443894.7U CN214707334U (en) | 2021-03-01 | 2021-03-01 | Direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214707334U true CN214707334U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120443894.7U Active CN214707334U (en) | 2021-03-01 | 2021-03-01 | Direct-drive permanent magnet synchronous motor rotor core for stirring and mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214707334U (en) |
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2021
- 2021-03-01 CN CN202120443894.7U patent/CN214707334U/en active Active
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