Permanent magnet mounting kit of permanent magnet low-speed synchronous motor

Abstract

The utility model relates to the technical field of permanent magnet synchronous motors, and discloses a permanent magnet low-speed synchronous motor permanent magnet mounting kit, which comprises a motor rotor, a plurality of grooves are formed in the motor rotor, permanent magnet bodies are arranged in the grooves, and a pushing assembly is arranged on one side of each groove. The pushing assembly comprises a mounting groove, the mounting groove is formed in one side of the groove, a screw rod is rotationally connected into the mounting groove, a shaft rod is fixedly connected to one end of the screw rod, a rotary knob is fixedly connected to one end of the shaft rod, a moving block is in threaded connection with the outer portion of the screw rod, and a threaded hole is formed in the moving block. According to the permanent magnet low-speed synchronous motor, the permanent magnet can be conveniently pushed out from the internal groove, and the motor rotor does not need to be disassembled, so that the disassembly efficiency is improved, the motor can be conveniently used in time, the installation tightness of the permanent magnet is enhanced, the fitting degree of the permanent magnet and the installation groove is improved, and the phenomenon that the permanent magnet low-speed synchronous motor breaks down is reduced.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet synchronous motor technology, and in particular to a permanent magnet mounting kit for a permanent magnet low-speed synchronous motor. Background Technology

[0002] A permanent magnet low-speed synchronous motor is a rotating machine that converts electrical energy into mechanical energy. It mainly consists of a stator and a rotor. Permanent magnet low-speed synchronous motors are widely used in industrial, aerospace, and military fields, especially in applications requiring high efficiency and reliability, such as industrial automation, power equipment for aerospace equipment, electric vehicles, coal mining, oil extraction, metallurgy, and elevators. A permanent magnet is a type of magnet that can maintain its magnetism for a long time. Unlike electromagnets, permanent magnets do not require an external power source to maintain their magnetic field. This unique property has led to the widespread application of permanent magnets in many fields, especially in the field of motors. Permanent magnets are usually made of materials that are easily magnetized.

[0003] A search revealed that Chinese patent CN217956822U discloses a permanent magnet mounting kit for a low-speed synchronous permanent magnet motor. This kit addresses the issue that existing end covers and motor housings are tightly connected, with some end covers being snapped into the motor housing. This is especially problematic for motors used for extended periods, where rust can occur at the end cover connection, making disassembly difficult. Furthermore, the thin end covers are prone to deformation during cleaning, hindering subsequent installation. Therefore, this kit simplifies installation and disassembly, preventing deformation when removing the motor end covers.

[0004] The aforementioned permanent magnet mounting kit improves the ease of installing and removing the motor end cover. In contrast, in existing technologies, permanent magnets are typically installed in internal grooves of the motor rotor. However, if the motor rotor is damaged, the permanent magnet needs to be removed from the groove. Since the permanent magnet is usually closely fitted to the groove, it is difficult to remove the permanent magnet from inside the groove. This requires the use of numerous tools to disassemble the motor rotor, which is cumbersome, reduces the efficiency of permanent magnet removal, and hinders the timely use of the motor. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a permanent magnet mounting kit for a permanent magnet low-speed synchronous motor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a permanent magnet low-speed synchronous motor permanent magnet mounting kit, including a motor rotor, wherein multiple grooves are provided inside the motor rotor, a permanent magnet body is disposed inside the grooves, and a pushing component is disposed on one side of the grooves;

[0007] The pushing component includes a mounting groove, which is formed on one side of a recess. A screw is rotatably connected inside the mounting groove. A shaft is fixedly connected to one end of the screw, and a knob is fixedly connected to one end of the shaft. A movable block is threadedly connected to the outside of the screw, and a threaded hole is formed inside the movable block.

[0008] As a further description of the above technical solution:

[0009] A push plate is fixedly connected to one side of the movable block. The push plate is slidably connected inside the groove. The movable block is slidably connected inside the mounting groove. A protective pad is provided on the upper surface of the push plate. The protective pad is made of rubber.

[0010] As a further description of the above technical solution:

[0011] The upper surface of the motor rotor is provided with a fastening assembly, which includes a retaining ring that is fixedly connected to the upper surface of the motor rotor.

[0012] As a further description of the above technical solution:

[0013] The upper surface of the fixing ring is hinged with multiple blocking covers, each blocking cover having a through hole and a first threaded groove, which is located on one side of the through hole.

[0014] As a further description of the above technical solution:

[0015] The upper surface of the motor rotor is provided with multiple second threaded grooves, which are arranged in a ring. Bolts are connected to the internal threads of the first and second threaded grooves.

[0016] As a further description of the above technical solution:

[0017] The lower surface of the blocking cover has two columnar grooves, and a spring is fixedly connected inside the columnar grooves. One end of the spring is fixedly connected to a fastening block.

[0018] As a further description of the above technical solution:

[0019] Two of the fastening blocks have fastening plates fixedly connected to their lower surfaces, and limit rings are fixedly connected to the outside of the fastening blocks and the inside of the columnar groove, respectively.

[0020] This utility model has the following beneficial effects:

[0021] 1. By setting up a pushing component, this utility model allows the permanent magnet of the synchronous motor to be pushed out of the internal groove when it needs to be disassembled after it is installed in the groove. This facilitates the separation of the permanent magnet from the groove and eliminates the need to disassemble the motor rotor with a large number of tools, thereby improving the disassembly efficiency of the permanent magnet and facilitating the timely use of the motor.

[0022] 2. By setting up fastening components, this utility model increases the installation tightness of the permanent magnet in the synchronous motor, which helps to improve the fit between the permanent magnet and the mounting groove. This reduces the possibility of displacement of the permanent magnet inside the groove due to vibration generated by the motor rotor after installation, which could lead to malfunctions in the low-speed synchronous motor. At the same time, the improved tightness helps to reduce damage to the permanent magnet due to uneven stress, extends the service life of the motor, and facilitates stable operation of the motor. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0024] Figure 2 This is a partial structural diagram of the shaft connection proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the mounting groove structure proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the movable block structure proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the fastening plate structure proposed in this utility model;

[0028] Figure 6 This is a schematic diagram of the fastening block structure proposed in this utility model;

[0029] Figure 7 This is a schematic diagram of the blocking cover structure proposed in this utility model.

[0030] Legend:

[0031] 1. Motor rotor; 2. Groove; 3. Permanent magnet body; 4. Mounting slot; 5. Screw; 6. Shaft; 7. Knob; 8. Moving block; 9. Threaded hole; 10. Push plate; 11. Protective pad; 12. Fixing ring; 13. Blocking cover; 14. Through hole; 15. First threaded groove; 16. Second threaded groove; 17. Columnar groove; 18. Spring; 19. Fastening block; 20. Fastening plate; 21. Limiting ring; 22. Bolt. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] As attached Figure 1-7 As shown, one embodiment of this utility model is provided: a permanent magnet low-speed synchronous motor permanent magnet mounting kit, including a motor rotor 1, a plurality of grooves 2 are provided inside the motor rotor 1, a permanent magnet body 3 is provided inside the grooves 2, and a pushing component is provided on one side of the grooves 2.

[0034] The pushing component includes a mounting groove 4, which is opened on one side of the groove 2. A screw 5 is rotatably connected inside the mounting groove 4. A shaft 6 is fixedly connected to one end of the screw 5. A knob 7 is fixedly connected to one end of the shaft 6. A moving block 8 is threadedly connected to the outside of the screw 5. A threaded hole 9 is opened inside the moving block 8. The shaft 6 is convenient to connect with the screw 5. The threaded hole 9 fits with the texture of the screw 5. The moving block 8 is used to drive the push plate 10 to move.

[0035] As attached Figure 4 As shown, a push plate 10 is fixedly connected to one side of the movable block 8. The push plate 10 is slidably connected inside the groove 2. The movable block 8 is slidably connected inside the mounting groove 4. A protective pad 11 is provided on the upper surface of the push plate 10. The protective pad 11 is made of rubber. The push plate 10 is used to drive the permanent magnet body 3 to move upward. The protective pad 11 provides buffer protection for the side of the push plate 10 that contacts the permanent magnet body 3.

[0036] As attached Figure 1 As shown, a fastening assembly is provided on the upper surface of the motor rotor 1. The fastening assembly includes a fixing ring 12, which is fixedly connected to the upper surface of the motor rotor 1. Multiple blocking covers 13 are hinged to the upper surface of the fixing ring 12. Through holes 14 are opened inside the blocking covers 13. Multiple second threaded grooves 16 are opened on the upper surface of the motor rotor 1. The multiple second threaded grooves 16 are distributed in a ring. The fixing ring 12 is used to install the blocking covers 13. Due to the passage of the knob 7 through the through holes 14, the second threaded grooves 16 facilitate the connection of the bolts 22, thereby closing and limiting the blocking covers 13.

[0037] As attached Figure 6As shown, the blocking cover 13 has a first threaded groove 15 inside, which is located on one side of the through hole 14. The first threaded groove 15 and the second threaded groove 16 are threaded with bolts 22. The lower surface of the blocking cover 13 has two columnar grooves 17, and springs 18 are fixedly connected inside the columnar grooves 17. One end of the spring 18 is fixedly connected to a fastening block 19. The lower surfaces of the two fastening blocks 19 are fixedly connected to fastening plates 20. Limiting rings 21 are fixedly connected to the outside of the fastening blocks 19 and the inside of the columnar grooves 17, respectively. The first threaded groove 15 facilitates the installation of bolts 22. The columnar grooves 17 reduce the deformation of the spring 18 and extend the service life of the spring 18. The fastening blocks 19 facilitate the transmission of the spring force of the spring 18. The fastening plates 20 facilitate the pushing of the permanent magnet body 3.

[0038] Working principle: When disassembling the permanent magnet body 3 installed inside the groove 2, first push the permanent magnet body 3 out of the groove 2, turn the knob 7 to drive the shaft 6 to rotate, and the shaft 6 drives the screw 5 to rotate, so that the screw 5 rotates inside the mounting groove 4. When the screw 5 rotates, under the connection of the threaded hole 9, it drives the moving block 8 to move upward outside the screw 5, thereby driving the push plate 10 and the protective pad 11 to push the permanent magnet body 3, so that the permanent magnet body 3 moves upward. When the permanent magnet body 3 moves upward, the upper end of the permanent magnet body 3 will be separated from the inside of the groove 2. Then, the permanent magnet body 3 can be slid out of the inside of the groove 2 by hand, which improves the disassembly efficiency of the permanent magnet body 3.

[0039] After the permanent magnet body 3 is installed inside the groove 2, when it needs to be tightened, rotate the blocking cover 13 so that the blocking cover 13 covers the top of the permanent magnet body 3. At the same time, the first threaded groove 15 is aligned with the corresponding second threaded groove 16. Tighten the bolt 22 from the inside thread of the first threaded groove 15 to the inside of the second threaded groove 16 to fix the blocking cover 13. At this time, the fastening plate 20 will be pushed by the fastening block 19 under the action of the spring 18. The fastening block 19 will be pushed to the fastening plate 20, so that the fastening plate 20 will push the permanent magnet body 3 installed inside the groove 2 under the action of the elastic force, thereby improving the tightness of the permanent magnet body 3 installation.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A permanent magnet installation kit for a permanent magnet low-speed synchronous motor, comprising a motor rotor (1), a plurality of recesses (2) are formed in the interior of the motor rotor (1), a permanent magnet body (3) is arranged in the interior of the recess (2), characterized in that: One side of the recess (2) is provided with a push assembly; ​ The push assembly comprises a mounting groove (4) which is arranged on one side of the recess (2), a screw rod (5) which is rotatably connected inside the mounting groove (4), an axle rod (6) which is fixedly connected to one end of the screw rod (5), a knob (7) which is fixedly connected to one end of the axle rod (6), a moving block (8) which is threadedly connected outside the screw rod (5), and a threaded hole (9) which is arranged inside the moving block (8).

2. The permanent magnet mounting kit for a permanent magnet low-speed synchronous motor according to claim 1, characterized by: One side of the moving block (8) is fixedly connected with a push plate (10) which is slidingly connected inside the recess (2), and the moving block (8) is slidingly connected inside the mounting groove (4), the upper surface of the push plate (10) is provided with a protective pad (11) which is made of rubber.

3. The permanent magnet mounting kit for a permanent magnet low-speed synchronous motor of claim 1, characterized by: The upper surface of the motor rotor (1) is provided with a fastening assembly, and the fastening assembly comprises a fixed ring (12) which is fixedly connected to the upper surface of the motor rotor (1).

4. The permanent magnet mounting kit for a permanent magnet low-speed synchronous motor according to claim 3, characterized by: The upper surface of the fixed ring (12) is hingedly connected with a plurality of blocking covers (13), the inside of the blocking cover (13) is provided with a through hole (14), and the inside of the blocking cover (13) is provided with a first threaded groove (15) which is arranged on one side of the through hole (14).

5. The permanent magnet mounting kit for a permanent magnet low-speed synchronous motor according to claim 4, characterized by: The upper surface of the motor rotor (1) is provided with a plurality of second threaded grooves (16) which are arranged in a ring shape, and the inside of the first threaded groove (15) and the second threaded groove (16) is threadedly connected with a bolt (22).

6. The permanent magnet mounting kit for a permanent magnet low-speed synchronous motor according to claim 4, characterized by: The lower surface of the blocking cover (13) is provided with two cylindrical grooves (17), the inside of the cylindrical groove (17) is fixedly connected with a spring (18), one end of the spring (18) is fixedly connected with a fastening block (19).

7. The permanent magnet mounting kit for a permanent magnet low-speed synchronous motor according to claim 6, characterized by: The lower surface of the two fastening blocks (19) is fixedly connected with a fastening plate (20), and the outside of the fastening block (19) and the inside of the cylindrical groove (17) are respectively fixedly connected with a limiting ring (21).

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