Self-starting permanent magnet motor iron core structure

Abstract

The utility model discloses a self-starting permanent magnet motor iron core structure, which comprises a stator iron core, a coil fixing assembly and a dynamic balance assembly, the coil fixing assembly comprises a winding block, an arc-shaped groove, a winding coil and a fixing bulge, the winding block is arranged on the inner side of the mounting groove in a penetrating manner, and the winding coil is arranged in the arc-shaped groove. The two ends of the winding block are symmetrically provided with two sets of fixing protrusions, the inner side of the stator core is provided with a rotor core, the dynamic balance assembly is located on the inner side of the stator core, and the dynamic balance assembly comprises a threaded rod, a limiting block and a counterweight ring; a plurality of groups of threaded rods are arranged on the outer side of the rotor iron core in a surrounding manner, two groups of limiting blocks are in threaded connection with the outer sides of the threaded rods, and the counterweight ring is slidably connected between the two groups of limiting blocks. The mounting stability degree of the balancing weight can be improved in a mechanical clamping mode, so that the situation that glue is melted and falls off is prevented, modification can be conducted again when errors are corrected, and adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet motors, in particular to a self-starting permanent magnet motor core structure. Background Art

[0002] The magnetic motor uses permanent magnets to generate the magnetic field of the motor. It does not require an excitation coil or an excitation current. It has high efficiency and simple structure. It is a very good energy-saving motor. With the advent of high-performance permanent magnetic materials and the rapid development of control technology. For example, the patent document with application number CN201710757410.4 discloses a rotor core of a permanent magnet motor. By providing multiple grooves along the circumferential direction on the outer side of the rotor core of the permanent magnet motor, and the grooves run through the axial direction of the rotor core, the rotor core can be used as a power source to drive the air flow inside the permanent magnet motor to form a fluid field during the rotation process, thereby accelerating the cooling of the core.

[0003] However, in the above-mentioned similar schemes, when the winding of the motor is damaged, the maintenance personnel need to manually wind the core coil for maintenance, which causes inconvenience. In addition, the rotor needs to be dynamically balanced before use. The counterweight block of the existing device is directly glued to the outer wall of the rotor with glue, making it impossible to adjust. When the internal temperature rises, the glue melts and causes the counterweight block to separate from the rotor.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a self-starting permanent magnet motor core structure is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a self-starting permanent magnet motor core structure, which solves the above-mentioned similar solutions proposed in the above-mentioned background technology. When the winding of the motor is damaged, the maintenance personnel need to manually wind the core coil for maintenance, which causes inconvenience. In addition, the rotor needs to be dynamically balanced before use. The counterweight block of the existing device is directly glued to the outer wall of the rotor with glue, making it impossible to adjust. When the internal temperature rises, the glue melts, causing the counterweight block to separate from the rotor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-starting permanent magnet motor core structure, comprising a stator core, a coil fixing assembly and a dynamic balancing assembly, wherein a mounting groove is provided through the inner side of the stator core, and the coil fixing assembly is located on the inner side of the stator core, and the coil fixing assembly comprises a winding block, an arc groove, a winding coil and a fixing protrusion, the inner side of the mounting groove is provided through the winding block, and the arc groove is fixed on the upper and lower sides of the winding block, and the winding coil is arranged around the outer side of the arc groove, two groups of the fixing protrusions are symmetrically arranged at both ends of the winding block, and a rotor core is provided on the inner side of the stator core, and the dynamic balancing assembly is located on the inner side of the stator core, the dynamic balancing assembly comprises a threaded rod, a limit block and a counterweight ring, and several groups of the threaded rods are arranged around the outer side of the rotor core, and the outer side of the threaded rod is threadedly connected with two groups of the limit blocks, and the counterweight ring is slidably connected between the two groups of the limit blocks.

[0007] Furthermore, eight groups of the installation grooves are equidistantly arranged, and the inner sides of the installation grooves are in contact with the outer sides of the coil fixing components.

[0008] Furthermore, the winding block is welded to form an integrated structure with the fixing protrusion, and the coil fixing assembly is engaged with the stator core to form a disassembly structure.

[0009] Furthermore, sixteen groups of fixing grooves are symmetrically arranged at the left and right ends of the rotor core, and the threaded rod is welded to form an integrated structure with the rotor core.

[0010] Furthermore, the counterweight ring forms a sliding structure with the threaded rod by plugging, and the inner sides of the two groups of limit blocks are provided with thread grooves.

[0011] Furthermore, an output shaft is engaged with the inner side of the rotor core, and the limit block and the threaded rod form a disassembly structure through threads.

[0012] The utility model provides a self-starting permanent magnet motor core structure, which has the following beneficial effects:

[0013] When the winding of the motor is damaged, the maintenance personnel can directly purchase the finished winding, so that the coil winding can be directly replaced, which is convenient and quick to repair. In addition, the mechanical clamping method can improve the stability of the installation of the counterweight block, thereby preventing the glue from melting and falling off, and can be modified again when the error is corrected, which is convenient for adjustment. The specific contents are as follows:

[0014] When the internal winding coil is damaged, the damaged winding can be removed individually, and the finished winding can be purchased and inserted into the installation groove for quick installation. The rotor can be placed on the dynamic balancing detection device, and the appropriate counterweight ring can be inserted into the corresponding threaded rod according to the deviation displayed by the machine, and the counterweight ring can be fixed by two sets of limit blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a self-starting permanent magnet motor core structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the coil fixing assembly structure of a self-starting permanent magnet motor core structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotor core of a self-starting permanent magnet motor core structure of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of a threaded rod of a self-starting permanent magnet motor core structure.

[0019] In the figure: 1. stator core; 11. mounting groove; 2. rotor core; 21. fixing groove; 3. output shaft; 4. coil fixing assembly; 401. winding block; 402. arc groove; 403. winding coil; 404. fixing protrusion; 5. dynamic balancing assembly; 501. threaded rod; 502. limit block; 503. counterweight ring. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 4As shown, a self-starting permanent magnet motor core structure includes a stator core 1, a coil fixing assembly 4 and a dynamic balancing assembly 5. The inner side of the stator core 1 is penetrated by a mounting groove 11, and 8 groups of mounting grooves 11 are equidistantly arranged, and the inner side of the mounting groove 11 is in contact with the outer side of the coil fixing assembly 4. The mounting groove 11 is used to place and fix the coil fixing assembly 4, and the coil fixing assembly 4 is located on the inner side of the stator core 1, and the coil fixing assembly 4 includes a winding block 401, an arc groove 402, a winding coil 403 and a fixing protrusion 404. The inner side of the mounting groove 11 is penetrated by a winding block 401, and the upper and lower sides of the winding block 401 are fixed with arc grooves 402, which are used to limit the position of the winding coil 403 to avoid the winding coil 403 falls off from the winding block 401, and a winding coil 403 is arranged around the outer side of the arc groove 402. The winding coil 403 is arranged around to form a magnetic field, thereby driving the rotor and the output shaft 3 to rotate. Two groups of fixing protrusions 404 are symmetrically arranged at both ends of the winding block 401. Because the two groups of fixing protrusions 404 are in contact with the mounting groove 11, the friction force on the inner side of the mounting groove 11 can prevent the coil fixing component 4 from falling off the stator core 1. The winding block 401 forms an integrated structure with the fixing protrusion 404 through welding, which can improve the stability of the winding block 401. Because the coil fixing component 4 forms a disassembly structure with the stator core 1 through card engagement, the coil winding 403 can be directly replaced, thereby facilitating and quickly repairing.

[0022] A rotor core 2 is arranged on the inner side of the stator core 1 for providing a magnetic flux path, and a dynamic balancing assembly 5 is located on the inner side of the stator core 1. The dynamic balancing assembly 5 includes a threaded rod 501, a limit block 502 and a counterweight ring 503. Several groups of threaded rods 501 are arranged around the outer side of the rotor core 2. Sixteen groups of fixing grooves 21 are symmetrically arranged on the left and right ends of the rotor core 2. The threaded rod 501 is on the inner side of the fixing groove 21. Since there are multiple groups of counterweight rings 503, counterweight rings 503 can be added to any position of the rotor core 2, thereby facilitating the adjustment of the dynamic balance of the rotor. The threaded rod 501 is welded to form an integrated structure with the rotor core 2 to improve the stability of the threaded rod 501 and prevent the threaded rod 501 from breaking. The outer side of the threaded rod 501 is threadedly connected with two groups of limit blocks 502. Since the inner sides of the two groups of limit blocks 502 are both provided with thread grooves, The two sets of limit blocks 502 clamp the counterweight ring 503, which is similar to the double nuts against each other and can fix the position of the counterweight ring 503 to prevent the position of the counterweight ring 503 from changing during rotation. The counterweight ring 503 is slidably connected between the two sets of limit blocks 502. The counterweight ring 503 increases its own weight to maintain the rotation balance of the rotor, which is beneficial for the rotor core 2 to maintain balance and not shake when rotating. The counterweight ring 503 is connected with the threaded rod 501 to form a sliding structure, which is convenient for adjusting the position of the counterweight ring 503. The output shaft 3 is engaged with the inner side of the rotor core 2 for mechanical connection with the outside world, and the limit block 502 forms a disassembly structure with the threaded rod 501 through a thread. The mechanical engagement method can improve the stability of the installation of the counterweight block 503, thereby preventing the glue from melting and falling off, and can be modified again when the error is corrected, which is convenient for adjustment.

[0023] In summary, when this type of self-starting permanent magnet motor core structure is used, first, when the internal winding coil is damaged, the winding block 401 is chiseled by external force to make the winding block 401 and the winding coil 403 detach from the mounting groove 11 until it is detached from the stator core 1, and the inner side of the mounting groove 11 is cleaned, and then the winding block 401 with the coil wound is inserted into the mounting groove 11, and at this time, the outer side of the fixing protrusion 404 is completely in contact with the inner wall of the mounting groove 11, thereby completing the quick installation, and then the rotor core 2 is placed on the dynamic balancing detection device, and the unbalanced position of the rotor core 2 is found according to the display of the machine, and the outer limit block 502 at the corresponding position is unscrewed, and a counterweight ring 503 of appropriate weight is inserted outside the corresponding threaded rod 501, and then another set of limit blocks 502 are screwed back onto the threaded rod 501, and both sides of the counterweight ring 503 are tightly fitted with the limit blocks 502, thereby completing the fixation.

Claims

1. A self-starting permanent magnet motor core structure, comprising a stator core (1), a coil fixing assembly (4) and a dynamic balancing assembly (5), characterized in that: The inner side of the stator core (1) is provided with a mounting groove (11) extending therethrough, and the coil fixing assembly (4) is located on the inner side of the stator core (1), and the coil fixing assembly (4) comprises a winding block (401), an arc-shaped groove (402), a winding coil (403) and a fixing protrusion (404), the inner side of the mounting groove (11) is provided with the winding block (401) extending therethrough, and the arc-shaped groove (402) is fixed on both upper and lower sides of the winding block (401), and the winding coil (403) is arranged around the outer side of the arc-shaped groove (402), and the winding block (401) is provided with a plurality of protrusions (404). Two groups of the fixing protrusions (404) are symmetrically arranged at both ends, and a rotor core (2) is arranged on the inner side of the stator core (1), and the dynamic balancing assembly (5) is located on the inner side of the stator core (1), the dynamic balancing assembly (5) comprises a threaded rod (501), a limit block (502) and a counterweight ring (503), and a plurality of groups of the threaded rods (501) are arranged around the outer side of the rotor core (2), and two groups of the limit blocks (502) are threadedly connected to the outer side of the threaded rod (501), and the counterweight ring (503) is slidably connected between the two groups of the limit blocks (502).

2. The self-starting permanent magnet motor core structure according to claim 1, characterized in that: The installation grooves (11) are arranged in 8 groups at equal intervals, and the inner sides of the installation grooves (11) are in contact with the outer sides of the coil fixing components (4).

3. The self-starting permanent magnet motor core structure according to claim 2 is characterized in that: The winding block (401) is welded to form an integrated structure with the fixing protrusion (404), and the coil fixing assembly (4) is engaged with the stator core (1) to form a disassembly structure.

4. The self-starting permanent magnet motor core structure according to claim 3 is characterized in that: Sixteen groups of fixing grooves (21) are symmetrically arranged at the left and right ends of the rotor core (2), and the threaded rod (501) is welded to form an integrated structure with the rotor core (2).

5. The self-starting permanent magnet motor core structure according to claim 4, characterized in that: The counterweight ring (503) is plugged into the threaded rod (501) to form a sliding structure, and the inner sides of the two groups of limit blocks (502) are both provided with thread grooves.

6. The self-starting permanent magnet motor core structure according to claim 5, characterized in that: An output shaft (3) is engaged with the inner side of the rotor core (2), and the limit block (502) and the threaded rod (501) form a disassembly structure through threads.

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