Permanent magnet motor using permanent magnet to replace current excitation

Abstract

The permanent magnet motor comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a rectangular shell, the inner side of the rectangular shell is fixedly connected with a motor body, the center of the front end of the motor body is provided with a motor output shaft, and the front end of the motor output shaft is fixedly connected with a small gear. The upper end of the small gear is in meshed connection with a large gear, a transmission shaft is arranged in the center of the large gear, a bearing at the rear end of the transmission shaft is connected with a triangular bearing fixing seat, stable placement of the transmission shaft can be guaranteed through the arranged triangular bearing fixing seat, and normal transmission of the transmission shaft can be guaranteed through meshed connection of the small gear and the large gear. The change of the size of the motor output shaft in the permanent magnet motor needs to change the size of the internal structure of the motor body so as to realize general adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet motors, in particular to a permanent magnet motor which uses permanent magnets to replace current excitation. Background Art

[0002] A permanent magnet motor is a device that converts electrical energy into mechanical energy. It is a type of electric motor. The stator of a permanent magnet motor is a permanent magnet, and only the rotor is a DC motor with coils. A permanent magnet motor uses an energized coil (i.e., stator winding) to generate a rotating magnetic field and act on the rotor to form a magnetic electromotive force rotation torque. Currently, a permanent magnet motor is usually composed of a motor body and a motor base at the bottom. The permanent magnet motor is fixed on the mounting table through the motor base and bolts, and then the output shaft is used to rotate to drive the external components to work.

[0003] Patent No. CN202311372340.2 discloses an adjustable permanent magnet motor, which is provided with a permanent magnet motor body, end plates are provided at opposite ends of the permanent magnet motor body, a motor shaft is provided at the output end of the permanent magnet motor body, two end plates are provided, motor brackets are provided on opposite sides of the permanent magnet motor body between the two end plates, the motor bracket is arranged in a U-shaped structure, and adjustment mechanisms are provided in the middle of the upper ends of the opposite sides of the motor bracket, the adjustment mechanism is connected to the opposite sides of the permanent magnet motor body, a supporting mechanism is provided at the bottom of the motor bracket, a mounting plate is provided at the bottom of the supporting mechanism, a receiving groove is provided at the top of the mounting plate, a debugging mechanism is provided in the receiving groove at the top of the mounting plate, and the debugging mechanism is connected to the bottom of the supporting mechanism. By providing a series of structures, it has the functions of adjusting the installation inclination, height and rotation, is easy to install, reduces the restrictions on the installation of the permanent magnet motor, and the adjustment self-locking makes the adjustment installation stable and reliable, but the permanent magnet motor has the following problems: first, the diameter of the output shaft cannot be changed, and the adaptability is poor; second, the structural installation stability is poor. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art. By setting a triangular bearing fixing seat, the stable placement of the transmission shaft can be ensured, and the meshing connection between the small gear and the large gear can ensure the normal transmission of the transmission shaft. The change of the size of the motor output shaft in the permanent magnet motor requires changing the size of the internal structure of the motor body, and universal adaptability cannot be achieved. Therefore, a large gear is set at the upper end of the rectangular shell. In this way, the technical problems in the prior art that the size of the motor output shaft needs to be directly replaced by the motor model, the universal adaptability is poor, and the placement stability is poor can be solved.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A permanent magnet motor that uses permanent magnets to replace current excitation includes a base plate, the upper end of the base plate is fixedly connected to a rectangular shell, the inner side of the rectangular shell is fixedly connected to a motor body, a motor output shaft is provided at the front center of the motor body, the front end of the motor output shaft is fixedly connected to a small gear, the upper end of the small gear is meshed and connected to a large gear, a transmission shaft is provided at the center of the large gear, and the rear end bearing of the transmission shaft is connected to a triangular bearing fixing seat.

[0007] As a preferred embodiment, the rectangular shell includes fixed plates with the same structure arranged at the front and rear ends, a connecting bearing seat is provided at the center position of the upper end of the fixed plate, and the fixed plates are fixedly connected to the rectangular body on one side close to each other, the fixed plates are fixedly connected to the bottom plate, and the rectangular body is arranged at the upper end of the bottom plate.

[0008] As a preferred embodiment, the triangular bearing fixing seat includes an acute-angle gasket, the upper end bearing of the acute-angle gasket is connected to the transmission shaft, and both sides of the lower end of the acute-angle gasket are fixedly connected to threaded fixing blocks, and the threaded fixing blocks are fixedly connected to triangular guide blocks, and the triangular guide blocks are arranged at the outer end of the acute-angle gasket.

[0009] As a preferred embodiment, a limit plate is provided at the front end of the rectangular shell, and the limit plate is an E-shaped block, and the left and right sides of the limit plate are fixedly connected to the rectangular shell, and the center position of the lower end of the limit plate is fixedly connected to a spring block, the lower end of the spring block is fixedly connected to the base, and the upper end bearing at the center position of the limit plate is connected to the output shaft of the motor.

[0010] As a preferred embodiment, a wire hole is provided at the center of the threaded fixing block on one side, and the wire hole is connected to the power supply line inside and outside. The rectangular shell at the rear end passes through and is connected to the No. 2 power supply line, and the No. 2 power supply line is arranged at the lower end of the triangular guide block.

[0011] As another preferred embodiment, the motor body is rectangular, and a permanent magnet, a stator, a rotor and an armature winding are arranged in the motor body.

[0012] Beneficial effects of the utility model:

[0013] (1) In the utility model, the permanent magnet motor is fixed on the base plate by setting a rectangular shell, so as to ensure that the entire permanent magnet motor is placed stably and runs stably. In addition, the rectangular structure suspends the motor body, so that the heat dissipation effect is better and the service life of the entire permanent magnet motor is extended.

[0014] (2) In the utility model, a small gear and a large gear are provided, and the meshing connection between the small gear and the large gear is utilized to ensure that the transmission shaft can rotate normally. In this way, the size and thickness of the transmission shaft can be changed while the size of the motor output shaft remains unchanged, thereby ensuring better universal adaptability of the entire permanent magnet motor.

[0015] (3) In the utility model, the transmission shaft is stably placed by setting a connecting bearing seat and a triangular bearing fixing seat, and the whole permanent magnet motor is highly integrated by being linked with the rectangular housing. The triangular bearing fixing seat can also fix the position of the motor body. The triangular guide block fixedly connected to the outside of the triangular bearing seat can not only limit the position of the triangular bearing fixing seat, but also ensure the aesthetic effect of the rear end and make the placement of the power supply line more convenient.

[0016] In summary, the permanent magnet motor has the advantages of simple structure, the size and thickness of the transmission shaft can be changed without changing the permanent magnet motor model, and good universal adaptability, and is particularly suitable for the field of permanent magnet motor technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the power supply line and the No. 2 power supply line in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the limiting piece in the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0022] Embodiment 1

[0023] like Figures 1 to 3 As shown, the utility model provides a permanent magnet motor that uses permanent magnets to replace current excitation, including a base plate 1, the upper end of the base plate 1 is fixedly connected to a rectangular shell 2, the inner side of the rectangular shell 2 is fixedly connected to a motor body 3, a motor output shaft 31 is provided at the front center of the motor body 3, the front end of the motor output shaft 31 is fixedly connected to a small gear 32, the upper end of the small gear 32 is meshed and connected to a large gear 33, a transmission shaft 34 is provided at the center of the large gear 33, and the rear end bearing of the transmission shaft 34 is connected to a triangular bearing fixing seat 4.

[0024] Furthermore, the rectangular housing 2 includes a fixing plate 21 with the same structure arranged at the front and rear ends, a connecting bearing seat 22 is provided at the center position of the upper end of the fixing plate 21, and the fixing plates 21 are fixedly connected to a rectangular body 23 on one side close to each other, the fixing plate 21 is fixedly connected to the base plate 1, and the rectangular body 23 is arranged at the upper end of the base plate 1. The rectangular housing 2 is used to fix the transmission shaft 34 and the large gear 33, so as to ensure the normal transmission of the motor output shaft 31 to drive the transmission shaft 34 to rotate, and the function of the connecting bearing seat 22 can also facilitate the more stable placement of the transmission shaft 34.

[0025] Furthermore, the triangular bearing fixing seat 4 includes an acute-angle gasket 41, the upper end bearing of the acute-angle gasket 41 is connected to the transmission shaft 34, and the lower ends of the acute-angle gasket 41 are fixedly connected to threaded fixing blocks 42 on both sides, and the threaded fixing blocks 42 are fixedly connected to triangular guide blocks 43, and the triangular guide blocks 43 are arranged on the outer end of the acute-angle gasket 41, and the acute-angle gasket 41 is placed on the inner side of the triangular guide block 43, that is, on the side close to the rectangular shell 2, which can not only limit the position of the transmission shaft 34 to ensure the placement stability of the transmission shaft 34, but also facilitate the connection between the motor body 3 and the rectangular shell 2, ensuring a high degree of structural integration and better stability. There can be space between the motor body 3 and the base plate 1, and the heat dissipation effect is better.

[0026] Furthermore, a limiting plate 5 is provided at the front end of the rectangular housing 2. The limiting plate 5 is an E-shaped block, and the left and right sides of the limiting plate 5 are fixedly connected to the rectangular housing 2, and the center position of the lower end of the limiting plate 5 is fixedly connected to a spring block 51, the lower end of the spring block 51 is fixedly connected to a base 52, and the upper end bearing at the center position of the limiting plate 5 is connected to the motor output shaft 31. The function of the limiting plate 5 is to limit the front end of the motor output shaft 31, so that the placement of the pinion 32 is more stable, ensuring that the pinion 32 can be meshed with the large gear 33. The setting of the spring block 51 is to reduce the vibration caused by the operation of the motor and ensure that the pinion 32 will not separate from the large gear 33. The structure is simple and practical.

[0027] Furthermore, a wire hole is provided at the center position of the threaded fixing block 42 on one side, and the wire hole is connected to a power supply line 44 inside and outside. The rectangular shell 2 at the rear end is penetrated by a No. 2 power supply line 45, and the No. 2 power supply line 45 is arranged at the lower end of the triangular guide block 43. The power supply line 44 and the No. 2 power supply line 45 are arranged to supply power to the permanent magnet motor to ensure that the permanent magnet motor can work normally.

[0028] Furthermore, the motor body 3 is rectangular, and a permanent magnet, a stator, a rotor and an armature winding are arranged in the motor body 3. The stator, rotor and other components arranged in the motor body 3 are basic components of the permanent magnet motor, which can ensure that the motor output shaft 31 in the permanent magnet motor can rotate normally when power is supplied.

[0029] Working process: first, the motor body 3 is fixedly connected to the rectangular housing 2, so that the motor body 3 is arranged at the upper end of the bottom plate 1, and there is a heat dissipation space between the motor body 3 and the bottom plate 1 to ensure good heat dissipation effect, and then the pinion 32 is fixedly connected to the motor output shaft 31, and a limit plate 5 is arranged at the front end of the pinion 32 to limit and cushion the pinion to extend the service life. The pinion 32 and the large gear 33 are meshed and connected, so that the work of the large gear 33 can drive the transmission shaft 34 to work, and the bearing of the transmission shaft 34 is connected to the bearing seat 2 and the triangular bearing fixing seat 4. To ensure the stability of placement, the bearing seat 2 and the fixing plate 21 are integrally formed, so that the transmission shaft 34 and the rectangular housing 2 are integrally formed, and the transmission is more stable. The entire permanent magnet motor can raise the transmission height of the transmission shaft 34 without changing the direction of the output shaft, and then the transmission shaft 34 is lengthened. The diameter of the transmission shaft 34 can also be changed to ensure the rigidity of the transmission shaft 34. It has high universal adaptability and does not need to frequently change the motor model to adapt to the complex working environment. It is more convenient to replace the outer matching transmission shaft, and the transmission effect is better.

[0030] It is worth noting that the spring block 51 is connected to the motor output shaft 31, which can effectively cushion the vibration and extend the service life of the entire permanent magnet motor.

[0031] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0032] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0033] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A permanent magnet motor using permanent magnets to replace current excitation, characterized in that: The invention comprises a bottom plate (1), the upper end of the bottom plate (1) is fixedly connected to a rectangular housing (2), the inner side of the rectangular housing (2) is fixedly connected to a motor body (3), a motor output shaft (31) is provided at the front center of the motor body (3), the front end of the motor output shaft (31) is fixedly connected to a pinion (32), the upper end of the pinion (32) is meshingly connected to a large gear (33), a transmission shaft (34) is provided at the center of the large gear (33), and the rear end bearing of the transmission shaft (34) is connected to a triangular bearing fixing seat (4).

2. A permanent magnet motor using permanent magnets to replace current excitation according to claim 1, characterized in that: The rectangular housing (2) comprises fixing plates (21) of the same structure arranged at the front and rear ends, a connecting bearing seat (22) is arranged at the center position of the upper end of the fixing plates (21), and the fixing plates (21) are fixedly connected to a rectangular body (23) on one side close to each other, the fixing plates (21) are fixedly connected to the bottom plate (1), and the rectangular body (23) is arranged at the upper end of the bottom plate (1).

3. A permanent magnet motor using permanent magnets to replace current excitation according to claim 1, characterized in that: The triangular bearing fixing seat (4) comprises an acute-angle gasket (41), the upper end of the acute-angle gasket (41) is bearing-connected to the transmission shaft (34), and both sides of the lower end of the acute-angle gasket (41) are fixedly connected to threaded fixing blocks (42), and the threaded fixing blocks (42) are fixedly connected to triangular guide blocks (43), and the triangular guide blocks (43) are arranged at the outer end of the acute-angle gasket (41).

4. A permanent magnet motor using permanent magnets to replace current excitation according to claim 1, characterized in that: A limiting piece (5) is provided at the front end of the rectangular housing (2), the limiting piece (5) is an E-shaped block, and the limiting piece (5) is fixedly connected to the rectangular housing (2) at both left and right sides, and the lower center of the limiting piece (5) is fixedly connected to a spring block (51), the lower end of the spring block (51) is fixedly connected to a base (52), and the upper center of the limiting piece (5) is bearing-connected to the output shaft (31) of the motor.

5. A permanent magnet motor using permanent magnets to replace current excitation according to claim 3, characterized in that: A wire hole is provided at the center of the threaded fixing block (42) on one side, and a power supply line (44) is connected inside and outside the wire hole. A second power supply line (45) is connected through the rectangular housing (2) at the rear end, and the second power supply line (45) is arranged at the lower end of the triangular guide block (43).

6. A permanent magnet motor using permanent magnets to replace current excitation according to claim 1, characterized in that: The motor body (3) is rectangular, and a permanent magnet, a stator, a rotor and an armature winding are arranged inside the motor body (3).

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