CN214205288U - Mixed magnetic circuit solid permanent magnet rotor, motor and assembly tool thereof - Google Patents
Mixed magnetic circuit solid permanent magnet rotor, motor and assembly tool thereof Download PDFInfo
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- CN214205288U CN214205288U CN202120139447.2U CN202120139447U CN214205288U CN 214205288 U CN214205288 U CN 214205288U CN 202120139447 U CN202120139447 U CN 202120139447U CN 214205288 U CN214205288 U CN 214205288U
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Abstract
The utility model discloses a mix solid permanent magnet rotor of magnetic circuit and motor and assembly fixture thereof belongs to the motor field. The assembly tool of the solid permanent magnet rotor with the hybrid magnetic circuit comprises a radial permanent magnet fixing plate, a tangential permanent magnet fixing plate, a special clamp I, a special clamp II, a radial permanent magnet mounting box, a radial permanent magnet guide rod, a tangential permanent magnet mounting box and a tangential permanent magnet guide rod. The hybrid magnetic circuit solid permanent magnet rotor and the asynchronous starting permanent magnet synchronous motor with better starting performance and running performance can be obtained through the assembly tool. The utility model can fasten the aluminum fixing plates and the magnetic pole iron cores in the process of preparing the rotor welding part through the assembly tool, and ensure the concentricity of the aluminum fixing plates and the magnetic pole iron cores after assembly; the installation of the tangential permanent magnet and the radial permanent magnet can be smoothly realized, the assembly difficulty is reduced, and the method is simple and convenient, low in cost and excellent in effect.
Description
Technical Field
The utility model relates to the field of electric machines, especially, relate to a solid permanent magnet rotor of hybrid magnetic circuit and motor and assembly fixture thereof.
Background
An asynchronous starting permanent magnet synchronous motor with a solid rotor structure generally comprises a radial magnetic circuit solid permanent magnet rotor structure, a tangential magnetic circuit solid permanent magnet rotor structure and a mixed magnetic circuit solid permanent magnet rotor structure. The asynchronous starting permanent magnet synchronous motor with the mixed magnetic circuit solid permanent magnet rotor structure has the excellent starting performance of large starting torque, large pull-in torque, large overload multiple and small starting current, and also has the excellent running performance of high efficiency and high power factor, and can further improve the output power of the motor in a limited space and meet the requirement that the asynchronous starting permanent magnet synchronous motor is 1-2 machine seat numbers smaller than an asynchronous motor with the same capacity. However, the mixed magnetic circuit solid permanent magnet rotor structure has more parts and is difficult to assemble, and the conventional assembly tool and the conventional assembly method cannot meet the requirements of rotor assembly precision and smooth installation of permanent magnets, so that the production efficiency and the motor performance of the conventional permanent magnet motor are directly influenced.
Therefore, the assembly tooling of the existing solid permanent magnet rotor with the hybrid magnetic circuit cannot meet the production requirements of the existing permanent magnet motor, still has inconvenience and defects, and needs to be further improved. How to create a new mixed magnetic circuit solid permanent magnet rotor, a motor and an assembly tool, the assembly precision of the mixed magnetic circuit solid permanent magnet rotor and the smooth installation of a permanent magnet can be ensured, so that the production efficiency of a permanent magnet motor is improved, and the good starting performance and the good running performance of the mixed magnetic circuit solid permanent magnet rotor permanent magnet motor are ensured.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an assembly fixture of solid permanent magnet rotor of hybrid magnetic circuit, make its assembly precision, the smooth installation of permanent magnet that can guarantee the solid permanent magnet rotor of hybrid magnetic circuit to promote permanent magnet motor's production efficiency, ensure good startability and the operating performance of the solid permanent magnet rotor permanent magnet motor of hybrid magnetic circuit, thereby overcome the not enough of current permanent magnet motor assembly process.
In order to solve the technical problem, the utility model provides an assembly fixture of solid permanent magnet rotor of mixed magnetic circuit, the solid permanent magnet rotor of mixed magnetic circuit includes rotor welding spare, tangential permanent magnet and radial permanent magnet, rotor welding spare includes that bush, interval set up the aluminium fixed plate of bush periphery, and the interval sets up the magnetic pole iron core in aluminium fixed plate periphery, and adjacent form the radial permanent magnet groove of installation radial permanent magnet between the aluminium fixed plate, adjacent form the tangential permanent magnet groove of installation tangential permanent magnet between the magnetic pole iron core, assembly fixture includes radial permanent magnet fixed plate, tangential permanent magnet fixed plate, special fixture one, special fixture two, radial permanent magnet mounting box, radial permanent magnet guide bar, tangential permanent magnet mounting box and tangential permanent magnet guide bar;
the outer structures of the radial permanent magnet fixing plate and the tangential permanent magnet fixing plate are respectively the same as the outer structures of the radial permanent magnet and the tangential permanent magnet, and the radial permanent magnet fixing plate and the tangential permanent magnet fixing plate are used for replacing the radial permanent magnet and the tangential permanent magnet when the rotor welding part is assembled;
the special fixture I is of a hollow cylinder structure, the inner diameter of the hollow cylinder structure is the same as the outer diameter of a circle formed by enclosing the radial permanent magnet fixing plate and the aluminum fixing plate, and the side wall of the cylinder structure is provided with at least 8 circumferential threaded holes which are used for fastening the radial permanent magnet fixing plate and the aluminum fixing plate through screws respectively;
the special fixture II also adopts a hollow cylinder structure, the inner diameter of the hollow cylinder structure is the same as the outer diameter of a circle formed by the magnetic pole iron core and the tangential permanent magnet fixing plate, and the side wall of the cylinder structure is provided with at least 8 circumferential threaded holes which are respectively used for fastening the magnetic pole iron core and the tangential permanent magnet fixing plate through screws;
the radial permanent magnet mounting box adopts a hollow arc-shaped structure, the inner cavity structure of the hollow arc-shaped structure is the same as the radial permanent magnet structure, and the radial permanent magnet guide rod is the same as the radial permanent magnet structure;
the tangential permanent magnet mounting box is of a U-shaped structure, the U-shaped cavity structure of the U-shaped structure is the same as that of the tangential permanent magnet, and the tangential permanent magnet guide rod is the same as that of the tangential permanent magnet.
The radial permanent magnet mounting box is characterized in that the radial permanent magnet mounting box is internally used for placing two circumferentially arranged left radial permanent magnets and right radial permanent magnets.
The number of the threaded holes uniformly machined in the circumferential direction of the special clamp I and the special clamp II is multiple of the pole number of the motor.
The radial permanent magnet mounting box is formed by bending and welding copper plates, the tangential permanent magnet mounting box is formed by bending copper plates, and the tangential permanent magnet guide bar and the radial permanent magnet guide bar are both formed by processing non-magnetic materials.
The utility model also provides a mixed magnetic circuit solid permanent magnet rotor, mixed magnetic circuit solid permanent magnet rotor makes through the assembly fixture assembly of the solid permanent magnet rotor of foretell mixed magnetic circuit.
In the mixed magnetic circuit solid permanent magnet rotor, the end part of the aluminum fixing plate, which is contacted with the bush, is provided with a hole for tightly mounting a cylindrical pin, and the cylindrical pin is fixed in the hole through metal bonding glue.
The improved structure is characterized in that rotor baffles are arranged at two end parts of the solid permanent magnet rotor with the mixed magnetic circuit, and a plurality of balance blocks are arranged on the rotor baffles.
In a further improvement, the balance block is tightly connected with the rotor baffle through a flat washer, a spring washer and a screw.
In a further improvement, an epoxy protective paint layer is coated on the exposed surface of the solid permanent magnet rotor.
The utility model also provides a mixed magnetic circuit asynchronous starting permanent magnet synchronous motor, including the solid permanent magnet rotor of foretell mixed magnetic circuit.
After adopting such design, the utility model discloses following advantage has at least:
1. the assembly fixture for the solid permanent magnet rotor with the mixed magnetic circuit can fasten the aluminum fixing plate and the magnetic pole iron core in the preparation process of a rotor welding part by adopting the radial permanent magnet fixing plate, the tangential permanent magnet fixing plate, the special fixture I and the special fixture II, and further ensures the concentricity of the aluminum fixing plate and the magnetic pole iron core after assembly; the tangential permanent magnet installation box, the tangential permanent magnet guide rod, the radial permanent magnet installation box and the radial permanent magnet guide rod can be used for smoothly installing the tangential permanent magnet and the radial permanent magnet, the assembly difficulty is reduced, and the tangential permanent magnet installation box, the radial permanent magnet installation box and the radial permanent magnet guide rod are simple and convenient to use, low in cost and good in effect.
2. By the utility model discloses the solid permanent magnet rotor of mixed magnetic circuit that assembly fixture assembly made can satisfy the assembly required precision of rotor, realizes the smooth installation of permanent magnet, finally promotes permanent magnet motor's production efficiency, ensures good startability and the operating performance of the solid permanent magnet rotor permanent magnet motor of mixed magnetic circuit.
3. The utility model discloses still through installing a plurality of balancing piece on rotor baffle among the solid permanent magnet rotor of mixed magnetic circuit, can promote the dynamic balance performance of solid permanent magnet rotor, improve the startability and the operating performance of motor.
4. Still through the tip drilling between aluminium fixed plate and bush, then scribble the cylindric lock that scribbles metal bonding glue in the hole dress, solidification more than 20 hours can further guarantee the fixed connection of aluminium fixed plate and bush, promotes the steadiness of rotor welding spare.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
FIG. 1 is a longitudinal sectional view of a general assembly drawing of a hybrid magnetic circuit solid permanent magnet rotor according to the present invention;
FIG. 2 is a view from the direction B of FIG. 1;
FIG. 3 is a cross-sectional view C-C of FIG. 1;
FIG. 4 is a schematic view of FIG. 3 with the tangential permanent magnets and the radial permanent magnets removed;
fig. 5 is a longitudinal sectional view of a rotor weld of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
FIG. 6 is a B-B cross-sectional view of a rotor weld assembly of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 7a is a cross-sectional view of a first special fixture in the assembly fixture of the solid permanent magnet rotor with the hybrid magnetic circuit of the present invention;
FIG. 7b is a side view of a first special fixture in the assembly fixture of the solid permanent magnet rotor with a hybrid magnetic circuit according to the present invention;
fig. 8a is a sectional view of a special fixture ii in the assembly fixture of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
FIG. 8b is a side view of the second special fixture in the assembly fixture of the solid permanent magnet rotor with hybrid magnetic circuit according to the present invention;
fig. 9a is a cross-sectional view of a tangential permanent magnet mounting box in the assembly fixture of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 9b is a side view of the tangential permanent magnet mounting box in the assembly fixture for the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 10a is a cross-sectional view of a tangential permanent magnet guide bar in the assembly tooling of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 10b is a side view of the tangential permanent magnet guide bar in the assembly tooling of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 11a is a cross-sectional view of a radial permanent magnet mounting box in the assembly tool of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 11b is a side view of the radial permanent magnet mounting box in the assembly tool of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 12a is a cross-sectional view of a radial permanent magnet guide bar in the assembly tool of the hybrid magnetic circuit solid permanent magnet rotor of the present invention;
fig. 12b is a side view of the radial permanent magnet guide bar in the assembly tool of the hybrid magnetic circuit solid permanent magnet rotor of the present invention.
Detailed Description
Referring to fig. 1, 2 and 3, a concrete structure of the hybrid magnetic circuit solid permanent magnet rotor of the embodiment includes: the rotor comprises a rotor welding piece 1, tangential permanent magnets 2, groove bottom pad strips 3, radial permanent magnets 4, aluminum rivets 5, flat pads 6, backstop gaskets 7, bolts 8, backstop gaskets 9, a rotor pressing plate 10, a lining key 11, a rotor baffle 12, a rotating shaft 13, a rotor baffle key 14, a rotor pressing plate 15, a balance block 16, flat gaskets 17, spring gaskets 18, screws 19 and copper rivets 20.
Referring to fig. 5 and fig. 6 again, the rotor weldment 1 of the mixed magnetic circuit solid permanent magnet rotor of the present embodiment is a component structure, and includes: the small-groove copper plate 101, the small-groove copper plate 102, the pole core 103, the slot wedge 104, the cylindrical pin 105, the aluminum fixing plate 106, the bushing 107, and the copper end ring 110 may be assembled and welded in advance.
Referring to fig. 7a to 12b again, the assembly fixture for the solid permanent magnet rotor with the hybrid magnetic circuit in this embodiment includes a radial permanent magnet fixing plate 108, a tangential permanent magnet fixing plate 109, a first special fixture g1, a second special fixture g2, a radial permanent magnet mounting box g5, a radial permanent magnet guide rod g6, a tangential permanent magnet mounting box g3, and a tangential permanent magnet guide rod g 4.
The outer structures of the radial permanent magnet fixing plate 108 and the tangential permanent magnet fixing plate 109 are respectively the same as the outer structures of the radial permanent magnet 4 and the tangential permanent magnet 2, and the radial permanent magnet fixing plate and the tangential permanent magnet fixing plate are used for replacing the radial permanent magnet 4 and the tangential permanent magnet 2 when the rotor weldment 1 is assembled.
As shown in fig. 7a and 7b, the special fixture one g1 is a hollow cylinder structure, the inner diameter D2 of the hollow cylinder structure is the same as the outer diameter of the circle enclosed by the radial permanent magnet fixing plate 108 and the aluminum fixing plate 106, and the side wall of the cylinder structure is provided with at least 8 circumferential threaded holes 111 for fastening the radial permanent magnet fixing plate 108 and the aluminum fixing plate 106 by screws respectively.
As shown in fig. 8a and 8b, the special fixture two g2 also adopts a hollow cylinder structure, the inner diameter D4 of the hollow cylinder structure is the same as the outer diameter of a circle enclosed by the pole core 103 and the tangential permanent magnet fixing plate 109, and the side wall of the cylinder structure is provided with at least 8 circumferential threaded holes 112 for fastening the pole core 103 and the tangential permanent magnet fixing plate 109 by screws respectively.
In practical application, the number of the threaded holes uniformly machined in the circumferential direction of the first special clamp g1 and the second special clamp g2 is multiple of the pole number of the motor.
As shown in fig. 11a and 11b, the radial permanent magnet mounting box g5 has a hollow arc structure, and the inner cavity structure of the hollow arc structure is the same as that of the radial permanent magnet 4. As shown in fig. 12a and 12b, the radial permanent magnet guide bar g6 has the same structure as the radial permanent magnet 4. The radial permanent magnet mounting box g5 is used for placing two circumferentially arranged left radial permanent magnets and right radial permanent magnets.
As shown in fig. 9a and 9b, the tangential permanent magnet mounting box g3 has a U-shaped structure, and the U-shaped cavity structure of the U-shaped structure is the same as that of the tangential permanent magnet 2. As shown in fig. 10a and 10b, the tangential permanent magnet guide bar g4 is identical in structure to the tangential permanent magnet 2.
The assembly fixture for the solid permanent magnet rotor with the hybrid magnetic circuit can realize the precise assembly of the solid permanent magnet rotor, and comprises the following specific use steps:
referring to fig. 6, 7a, 7b, 8a and 8b, the aluminum fixing plate 106 and the bushing 107 are cleaned, and the aluminum fixing plate 106 is coated with a metal adhesive glue, such as loctite glue, on the contact surface with the bushing 107 and fixed on the bushing 107 according to the position of fig. 6; the radial permanent magnet fixing plates 108 are uniformly arranged on the bushing 107, namely between every two adjacent aluminum fixing plates 106, and at the moment, the outer circles of the aluminum fixing plates 106 and the radial permanent magnet fixing plates 108 are clamped by a special clamp g 1. Three special fixtures one g1 can be used to clamp the two ends and the middle section of the aluminum fixing plate 106 and the radial permanent magnet fixing plate 108, respectively, and corresponding bolts (not shown) are screwed into the circumferential threaded holes 111 of the special fixtures one to realize circumferential compression of the aluminum fixing plate 106 and the radial permanent magnet fixing plate 108, and the curing is performed for more than 20 hours, for example, 24 hours.
After curing, removing the special fixture one g1, assembling the magnetic pole core 103 and the tangential permanent magnet fixing plate 109 according to the position shown in fig. 6, and coating a loctite adhesive between the contact surfaces of the aluminum fixing plate 106 and the magnetic pole core 103; coating le tai glue on the contact surfaces of the small-groove copper plate 101, the small-groove copper plate 102 and the magnetic pole iron core 103, embedding the contact surfaces into corresponding grooves of the magnetic pole iron core 103, and uniformly distributing the two ends of the contact surfaces; the rotor slot wedges 104 are driven into corresponding slots of the magnetic pole iron core 103, and the two ends are uniformly distributed; at this time, the outer circle of the pole core 103 is clamped by three special clamps two g2, and the two ends and the middle section of the pole core 103 are respectively clamped; the pole core 103 is also circumferentially pressed by screwing corresponding bolts into the circumferential threaded holes 112, and cured for 24 hours.
In order to further enhance the connection firmness of the aluminum fixing plate and the bushing, four holes are drilled at two ends of the position between the aluminum fixing plate 106 and the bushing 107 according to the position shown in fig. 6, then the cylindrical pin 105 is installed, the surface of the cylindrical pin 105 is coated with loctite glue, and the cylindrical pin is cured for more than 20 hours.
After the solidification is finished, removing the second special fixture g2, and firmly welding the rotor slot wedges 104 and the magnetic pole iron core 103 by using stainless steel bars; the small-groove copper plate 101 and the small-groove copper plate 102 are firmly welded with the copper end ring 110 respectively; punching holes at a plurality of positions of the joint of the small-groove copper plate and the magnetic pole iron core 103; and withdrawing the radial permanent magnet fixing plate 108 and the tangential permanent magnet fixing plate 109 to obtain the rotor welding part 1.
When the assembly is carried out, the rotor pressing plate 15 is pressed into a specified position of the rotating shaft 13 in advance; the lining key 11 is arranged in the lining key groove of the rotating shaft 13; sleeving the prepared rotor welding part 1 into the rotating shaft 13 in a hot manner; and finely turning the outer circle of the rotor weldment 1 to an accurate size.
Then referring to the attached drawings 3, 4, 9a, 9b, 10a and 10b, the groove bottom filler strip 3 is arranged at the bottom of the tangential permanent magnet groove of the rotor welding part 1, and the groove bottom filler strip 3 is made of epoxy glass cloth plate; the tangential permanent magnet mounting box g3 is tightly attached to the end face of the magnetic pole iron core 103, the notch of the tangential permanent magnet mounting box is opposite to the tangential permanent magnet slot, and the tangential permanent magnet mounting box g3 is clamped and fixed on the bottom face of the end part of the rotor slot wedge 104; the tangential permanent magnets 2 are axially partitioned, are arranged in a tangential permanent magnet mounting box g3 block by block, and are pushed into a tangential permanent magnet groove by a tangential permanent magnet guide rod g 4; when one tangential permanent magnet polar slot is installed, a temporary thin iron plate is used for blocking the notch of the tangential permanent magnet; and (5) removing the tangential permanent magnet mounting box g3, and mounting the other polar tangential permanent magnet 2 until the multipole tangential permanent magnets are mounted.
Referring to fig. 3, 4, 11a, 11b, 12a and 12b again, a radial permanent magnet mounting box g5 is mounted and fixed at the end of the pole core 103, and the notch faces the radial permanent magnet slot; the radial permanent magnet 4 is circumferentially divided into two blocks; when the left radial permanent magnet 4 is installed, a radial permanent magnet guide bar g6 is inserted into the right side of the radial permanent magnet groove; the left radial permanent magnets 2 are installed in the left tool hole of the radial permanent magnet installation box g5 block by block, and a non-magnetic copper bar is pushed into the left radial permanent magnet groove; after the left permanent magnet of one radial permanent magnet groove is installed, most of the notch of the left permanent magnet is blocked by a thin iron plate; the radial permanent magnet guide bar g6 in the right radial permanent magnet groove is pulled out, the right radial permanent magnets 4 are installed into the right radial permanent magnet groove one by one, and the non-magnetic copper bar is pushed into the right radial permanent magnet groove; after the right half permanent magnet 4 of the right radial permanent magnet slot is completely installed, the temporary thin iron plate is moved to completely block the radial magnet slot opening where the radial permanent magnet 4 is installed; and (5) detaching the radial permanent magnet mounting box g6, and mounting the radial permanent magnet of the other polar slot until the multi-polar radial permanent magnets are mounted.
After all the tangential permanent magnets 2 and the radial permanent magnets 4 are assembled, a rotor pressing plate 10 at the non-shaft extension end is pressed in as shown in the attached drawing 1; through a flat gasket 6, a backstop gasket 7 and a bolt 8, a shaft extension end rotor pressing plate 15 and a non-shaft extension end rotor pressing plate 10 are fixedly connected with a rotor welding piece 1, and the backstop gasket 7 is flanged upwards; through a flat gasket 6, a backstop gasket 9 and a bolt 8, a shaft extension end rotor pressing plate 15 and a non-shaft extension end rotor pressing plate 10 are fixedly connected with a rotor welding piece 1, and the backstop gasket 9 is flanged upwards; rotor baffle keys 14 are installed and pressed into the front and rear rotor baffles 12.
Then, the aluminum rivets 5 penetrate into corresponding holes of the copper end ring 110 of the rotor weldment 1 and the rotor slot wedges 104 from the lower part, and are riveted flat on the rotor slot wedges 104; the bent parts at the two ends of the small-groove copper plate 101 and the small-groove copper plate 102 are respectively riveted with the copper end ring 110 by using copper rivets 20; according to the requirement of dynamic balance, a certain number of balance blocks 16 are arranged in the front rotor baffle plate 12 and the rear rotor baffle plate 12, and the balance blocks 16 are fixedly connected with the rotor baffle plate 14 through flat washers 17, spring washers 19 and screws 19; and finally, brushing epoxy protective paint on the exposed surface of the assembled solid permanent magnet rotor to finish the assembly of the solid permanent magnet rotor with the mixed magnetic circuit.
In the embodiment, the tangential permanent magnet mounting box g3 is formed by bending a copper plate; the tangential permanent magnet guide bar g4 is made of non-magnetic copper plate, aluminum plate or epoxy plate; the radial permanent magnet mounting box g5 is formed by bending and welding copper plates; the radial permanent magnet guide bar g6 is made of non-magnetic material, such as copper plate, aluminum plate or epoxy plate; the rotor slot wedge 3 is processed by a copper plate; the shaft extension end rotor pressing plate 15 and the non-shaft extension end rotor pressing plate 10 are made of non-magnetic materials; the copper end ring 110 is formed by bending red copper, and the small-groove copper plate is formed by processing a copper plate; the aluminum fixing plate 106 is made of a hard aluminum plate made of a non-magnetic material; the pole core 103 and the bushing 107 are made of mild steel, and standard parts for fastening and connecting the rotor pressing plate and the rotor welding part are all stainless steel materials.
The utility model discloses the solid permanent magnet rotor of mixed magnetic circuit who obtains can satisfy the assembly required precision of rotor, realizes the smooth installation of permanent magnet, for the follow-up mixed magnetic circuit asynchronous starting PMSM that prepares into plays crucial effect, has promoted permanent magnet motor's production efficiency, ensures good startability and the operating performance of the solid permanent magnet rotor permanent magnet motor of mixed magnetic circuit.
The mixed magnetic circuit solid permanent magnet rotor belongs to a mixed magnetic circuit solid permanent magnet structure in the solid permanent magnet rotor, and the asynchronous starting synchronous operation permanent magnet synchronous motor with the mixed magnetic circuit solid permanent magnet rotor has excellent starting requirements of large starting torque, large pull-in torque, large overload multiple and small starting current; meanwhile, the motor has excellent operation performance of high efficiency, high power factor and high power density, and the output power of the motor is greatly improved in a limited space. The assembly tool can simply and conveniently realize the assembly of the solid permanent magnet rotor with the mixed magnetic circuit, ensure that each aluminum fixing plate is uniformly arranged on the bushing, and ensure the concentricity of the four aluminum fixing plates after the assembly; each magnetic pole iron core is uniformly arranged on the aluminum fixing plate, and the assembly concentricity of the four magnetic pole iron cores is ensured; and the smooth assembly of the tangential permanent magnet and the radial permanent magnet is also ensured. With the help of the assembly fixture, the problems that the production efficiency and the motor performance of an existing mixed magnetic circuit solid permanent magnet rotor are directly affected due to low production efficiency, low assembly precision, difficult permanent magnet assembly and the like are effectively solved, and the production efficiency of the mixed magnetic circuit solid permanent magnet rotor and the mixed magnetic circuit asynchronous starting permanent magnet synchronous motor is improved.
In addition, the tangential permanent magnet and the radial permanent magnet in the solid permanent magnet rotor of the mixed magnetic circuit are both designed into an axial block structure and a radial block structure, so that the formed mixed magnetic circuit can adjust the back electromotive force of the motor to be close to the voltage of a power grid, the motor is ensured to have higher power factor, the no-load current is also very small, and the efficiency is further improved in a limited rotor space; and the prepared mixed magnetic circuit asynchronous starting permanent magnet synchronous motor has a large overload torque multiple at the same time.
The assembly tool of the solid permanent magnet rotor with the mixed magnetic circuit can be widely applied to the structure and the production method of the solid rotor with the mixed magnetic circuit of the asynchronous starting permanent magnet synchronous motor with other pole numbers through reference and transformation, and has wide application.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The assembly tool for the solid permanent magnet rotor with the mixed magnetic circuit comprises a rotor welding part, tangential permanent magnets and radial permanent magnets, wherein the rotor welding part comprises a lining, aluminum fixing plates arranged on the periphery of the lining at intervals and magnetic pole iron cores arranged on the periphery of the aluminum fixing plates at intervals, a radial permanent magnet groove for mounting the radial permanent magnets is formed between every two adjacent aluminum fixing plates, and a tangential permanent magnet groove for mounting the tangential permanent magnets is formed between every two adjacent magnetic pole iron cores;
the outer structures of the radial permanent magnet fixing plate and the tangential permanent magnet fixing plate are respectively the same as the outer structures of the radial permanent magnet and the tangential permanent magnet, and the radial permanent magnet fixing plate and the tangential permanent magnet fixing plate are used for replacing the radial permanent magnet and the tangential permanent magnet when the rotor welding part is assembled;
the special fixture I is of a hollow cylinder structure, the inner diameter of the hollow cylinder structure is the same as the outer diameter of a circle formed by enclosing the radial permanent magnet fixing plate and the aluminum fixing plate, and the side wall of the cylinder structure is provided with at least 8 circumferential threaded holes which are used for fastening the radial permanent magnet fixing plate and the aluminum fixing plate through screws respectively;
the special fixture II also adopts a hollow cylinder structure, the inner diameter of the hollow cylinder structure is the same as the outer diameter of a circle formed by the magnetic pole iron core and the tangential permanent magnet fixing plate, and the side wall of the cylinder structure is provided with at least 8 circumferential threaded holes which are respectively used for fastening the magnetic pole iron core and the tangential permanent magnet fixing plate through screws;
the radial permanent magnet mounting box adopts a hollow arc-shaped structure, the inner cavity structure of the hollow arc-shaped structure is the same as the radial permanent magnet structure, and the radial permanent magnet guide rod is the same as the radial permanent magnet structure;
the tangential permanent magnet mounting box is of a U-shaped structure, the U-shaped cavity structure of the U-shaped structure is the same as that of the tangential permanent magnet, and the tangential permanent magnet guide rod is the same as that of the tangential permanent magnet.
2. The assembly tooling for the solid permanent magnet rotor with the hybrid magnetic circuit according to claim 1, wherein the radial permanent magnet mounting box is used for placing two circumferentially arranged left radial permanent magnets and right radial permanent magnets.
3. The assembly tooling for the solid permanent magnet rotor with the hybrid magnetic circuit according to claim 2, wherein the number of the threaded holes uniformly machined in the circumferential direction of the first special fixture and the second special fixture is a multiple of the number of poles of the motor.
4. The assembly tooling for the solid permanent magnet rotor with the hybrid magnetic circuit according to any one of claims 1 to 3, wherein the radial permanent magnet mounting box is formed by bending and welding copper plates, the tangential permanent magnet mounting box is formed by bending copper plates, and the tangential permanent magnet guide bar and the radial permanent magnet guide bar are both formed by processing non-magnetic materials.
5. A solid permanent magnet rotor with a hybrid magnetic circuit is characterized in that the solid permanent magnet rotor with the hybrid magnetic circuit is manufactured by assembling the assembling tool of the solid permanent magnet rotor with the hybrid magnetic circuit according to any one of claims 1 to 4.
6. The solid permanent magnet rotor with hybrid magnetic circuit of claim 5, wherein the end of the solid permanent magnet rotor with hybrid magnetic circuit contacting the aluminum fixing plate and the bushing is opened with a hole for tightly installing a cylindrical pin, and the cylindrical pin is fixed in the hole by metal bonding glue.
7. The solid permanent magnet rotor with hybrid magnetic circuit of claim 6, wherein rotor baffles are provided at both ends of the solid permanent magnet rotor with hybrid magnetic circuit, and a plurality of balance blocks are mounted on the rotor baffles.
8. The hybrid magnetic circuit solid permanent magnet rotor of claim 7, wherein the balance weight is tightly connected to the rotor baffle by a flat washer, a spring washer and a screw.
9. The hybrid magnetic circuit solid permanent magnet rotor of claim 8, wherein an exposed surface of the solid permanent magnet rotor is painted with an epoxy protective paint layer.
10. A hybrid magnetic circuit asynchronous starting permanent magnet synchronous motor comprising a hybrid magnetic circuit solid permanent magnet rotor according to any of claims 5 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120139447.2U CN214205288U (en) | 2021-01-19 | 2021-01-19 | Mixed magnetic circuit solid permanent magnet rotor, motor and assembly tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120139447.2U CN214205288U (en) | 2021-01-19 | 2021-01-19 | Mixed magnetic circuit solid permanent magnet rotor, motor and assembly tool thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214205288U true CN214205288U (en) | 2021-09-14 |
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ID=77636884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120139447.2U Active CN214205288U (en) | 2021-01-19 | 2021-01-19 | Mixed magnetic circuit solid permanent magnet rotor, motor and assembly tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214205288U (en) |
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2021
- 2021-01-19 CN CN202120139447.2U patent/CN214205288U/en active Active
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