Aluminum-nickel-cobalt magnetic steel for permanent magnet synchronous variable-pitch motor

Abstract

The utility model relates to the technical field of annular magnetic steel, in particular to aluminum-nickel-cobalt magnetic steel for a permanent magnet synchronous variable-pitch motor, which comprises a rotating shaft and is characterized in that a rotating disc is mounted on the outer wall of the rotating shaft, a rotor core body is mounted on the outer wall of the rotating disc, and a magnetic steel groove is formed in the outer disc of the rotor core body. The number of the magnetic steel grooves is 7-9, the magnetic steel grooves are adjacently arranged at equal intervals, the magnetic steel bodies are installed in the magnetic steel grooves, the stator core body is installed on the outer wall of the rotor core body, and the U-shaped vertical grooves are formed in the edge of the outer disc of the stator core body. One side of the magnetic steel groove is provided with the heat dissipation circular hole, and the heat dissipation air channel is communicated and associated with the heat dissipation circular hole, thereby guaranteeing the normal heat dissipation of the magnetic steel of the motor during the operation of the motor, and achieving the cooling effect of the stator main body during the operation of the motor through the arrangement of the water cooling pipe, thereby effectively prolonging the service life of the whole structure.

Description

Technical Field

[0001] The utility model relates to the technical field of annular magnetic steel, in particular to an aluminum-nickel-cobalt magnetic steel for a permanent magnet synchronous variable pitch motor. Background Art

[0002] Magnetic steel generally refers to aluminum-nickel-cobalt alloy. Magnetic steel is composed of several hard and strong metals, such as iron, aluminum, nickel, cobalt, etc., and sometimes copper, niobium, and tantalum. It is used to make super-hard permanent magnetic alloys. The permanent magnet rotor is a rotor for an electric motor, including a rotor core and a rotor shaft. The rotor shaft passes through the axial hole of the rotor core and is fastened to the rotor core. However, the aluminum-nickel-cobalt magnetic steel on the market currently has a complex installation structure and poor heat dissipation effect. Long-term use can easily affect the speed response of the motor.

[0003] A Chinese patent discloses a high-performance permanent magnet motor rotor annular magnetic steel (publication number: CN 217335238 U) comprising: a plate body, comprising an annular magnet, the surface of the annular magnet being provided with an abutment mechanism; the abutment mechanism comprising an adjustment plug, the adjustment plug being inserted into the inner side of the annular magnet, the surface of the annular magnet being provided with an adjustment groove, the inner side of the annular magnet being penetrated and connected with an abutment rod, the inner side of the annular magnet being provided with a telescopic groove, the outer surface of the abutment rod being sleeved with a baffle, but the annular magnetic steel has poor heat dissipation effect, and the high temperature after long-term use is likely to affect the speed response of the motor, the structure is unstable, and the practicality is low, so there is a need for an aluminum-nickel-cobalt magnetic steel for a permanent magnet synchronous variable pitch motor. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art, such as poor heat dissipation effect of the existing magnetic steel, high temperature after long-term use, which easily affects the speed response of the motor, unstable structure and low practicality, and to propose an aluminum-nickel-cobalt magnetic steel for a permanent magnet synchronous variable pitch motor.

[0005] The technical solution adopted by the utility model to solve its technical problems is: the aluminum-nickel-cobalt magnet for a permanent magnet synchronous variable pitch motor described in the utility model includes a rotating shaft, and is characterized in that: a rotating disk is installed on the outer wall of the rotating shaft, a rotor core body is installed on the outer wall of the rotating disk, a magnetic steel groove is provided on the outer disk of the rotor core body, the number of the magnetic steel grooves is 7 to 9 and they are all arranged adjacent to each other at equal intervals, a magnetic steel body is installed in each of the magnetic steel grooves, a stator core body is installed on the outer wall of the rotor core body, a U-shaped vertical groove is provided on the outer disk edge of the stator core body, the number of the U-shaped vertical grooves is 6 to 8 and a mounting hole is provided between each adjacent U-shaped vertical groove, the mounting holes are arranged at equal intervals on the edge of the outer disk of the stator body, and a cooling component is provided in each of the U-shaped vertical grooves.

[0006] Preferably, the cooling assembly includes a water cooling pipe, on which a clamping ring is provided. The clamping rings are two in number and are fixed from top to bottom. The water cooling pipe can be effectively fixed by providing the clamping ring to prevent the water cooling pipe from falling off during operation of the motor.

[0007] Preferably, circular heat dissipation holes are provided on one side of the magnetic steel slot, the number of the circular heat dissipation holes is 7 to 9 and they are arranged corresponding to the magnetic steel slots, a heat dissipation duct is provided at the inner center of the magnetic steel slot, and the heat dissipation duct is interconnected with the heat dissipation circular holes. By setting the heat dissipation duct and the heat dissipation circular holes to be interconnected, the normal heat dissipation of the motor magnet during the operation of the motor is ensured, thereby extending its service life.

[0008] Preferably, the stator core inner plate is provided with stator slots, the number of the stator slots is 7 to 9 and they are adjacently arranged at equal intervals, and the stator slots are of a trapezoidal structure and a notch is provided at one end.

[0009] Preferably, the magnetic steel body is made of aluminum-nickel-cobalt alloy, and the magnetic steel body is a concentric unequal circular ring structure.

[0010] Preferably, both ends of the rotating shaft are provided with flat keyways, and the rotating shaft, rotating disk and rotor core are all concentrically and coaxially arranged.

[0011] The utility model is beneficial in that:

[0012] The utility model has a simple structure and high practicality. A heat dissipation duct is arranged at the center of the magnetic steel slot, and a heat dissipation circular hole is arranged on one side of the magnetic steel slot. The heat dissipation duct and the heat dissipation circular hole are arranged to communicate with each other, so as to ensure that the motor magnet dissipates heat normally when the motor is running. By arranging a water cooling pipe, the stator body can be cooled when the motor is running, thereby effectively extending the service life of the overall structure. The water cooling pipe is fixed with a clamping ring, which can effectively prevent the water cooling pipe from falling off. The aluminum nickel cobalt magnet with this technical indicator (technical indicators are shown in the specification) is used as a permanent magnet synchronous variable pitch motor, which is suitable for the actuator of the motor electric variable pitch adopts permanent magnet synchronization, and the motor controls each blade separately. The structure is compact and reliable, and the pitch can be changed independently, thereby improving the speed response of the motor, avoiding increasing the vibration of the blade during the pitch change process, and making the starting and braking process without overshoot, and meeting the operation of the motor above the base speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative labor.

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0015] Figure 2 For this utility model Figure 1 A is an enlarged view of the middle image.

[0016] Figure 3 This is a schematic diagram of the rotor core structure of the utility model.

[0017] Figure 4 For this utility model Figure 3 Enlarged view of B.

[0018] Figure 5 It is a top view of the structure of the utility model.

[0019] Figure 6 It is a schematic diagram of the explosion structure of the utility model.

[0020] In the figure: 1. mounting hole; 2. U-shaped vertical groove; 3. stator core; 4. stator slot; 5. rotating shaft; 6. flat key slot; 7. rotating disk; 8. heat dissipation circular hole; 9. notch; 10. water cooling pipe; 11. clamping ring; 12. heat dissipation duct; 13. magnetic steel slot; 14. magnetic steel body; 15. rotor core. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0022] See also Figure 1-6 As shown, an aluminum-nickel-cobalt magnet for a permanent magnet synchronous pitch motor includes a rotating shaft 5, characterized in that: a rotating disk 7 is installed on the outer wall of the rotating shaft 5, a rotor core 15 is installed on the outer wall of the rotating disk 7, the outer disk of the rotor core 15 is provided with a magnetic steel slot 13, the number of the magnetic steel slots 13 is 7 to 9 and they are all arranged adjacent to each other at equal intervals, a magnetic steel body 14 is installed in each of the magnetic steel slots 13, a stator core 3 is installed on the outer wall of the rotor core 15, a U-shaped vertical slot 2 is provided on the edge of the outer disk of the stator core 3, the number of the U-shaped vertical slots 2 is 6 to 8 and a mounting hole 1 is provided between each adjacent U-shaped vertical slot 2, the mounting holes 1 are arranged at equal intervals on the edge of the outer disk of the stator body, and a cooling component is provided in each of the U-shaped vertical slots 2.

[0023] In this embodiment, the cooling assembly includes a water-cooling pipe 10, and a clamping ring 11 is provided on the water-cooling pipe 10. The number of the clamping rings 11 is 2 and they are fixed from top to bottom. The water-cooling pipe 10 and the clamping ring 11 are both common products on the market and can be purchased directly. By providing the clamping ring 11, the water-cooling pipe 10 can be effectively fixed to prevent the water-cooling pipe 10 from falling off during the operation of the motor.

[0024] In this embodiment, a heat dissipation circular hole 8 is provided on one side of the magnetic steel slot 13. The number of the heat dissipation circular holes 8 is 7 to 9 and they are arranged corresponding to the magnetic steel slot 13. A heat dissipation duct 12 is provided at the center of the magnetic steel slot 13. The heat dissipation duct 12 is interconnected with the heat dissipation circular holes 8. By setting the heat dissipation duct 12 and the heat dissipation circular holes 8 to be interconnected, the normal heat dissipation of the motor magnet during operation of the motor is ensured, thereby extending its service life.

[0025] In this embodiment, the inner disk of the stator core 3 is provided with stator slots 4, the number of the stator slots 4 is 7 to 9 and they are adjacently arranged at equal intervals, the stator slots 4 are of a trapezoidal structure and a notch 9 is provided at one end.

[0026] In this embodiment, the magnetic steel body 14 is a concentric unequal circular ring structure, and the material of the magnetic steel body 14 is an aluminum-nickel-cobalt alloy. The technical indicators of the aluminum-nickel-cobalt alloy are as follows:

[0027] (1) Chemical composition: (%)

[0028] Al: 8.1~8.3, Ni:14.1~14.3, Co:24.2~24.5, Cu:2.9~3.1 and the rest Fe

[0029] Trace elements: Ti: 0.21~0.25, S: 0.15~0.18, C: 0.11~0.15;

[0030] (2) Magnetic properties: Br = 12500-12800Gs, (BH) max ≥ 5.5MGOe, Hcb> 650 Oe Hcj> 660 Oe;

[0031] By using AlNiCo magnets with this technical indicator as permanent magnet synchronous variable pitch motors, the actuator suitable for motor electric pitch control adopts permanent magnet synchronization, and the motor controls each blade individually. It has a compact and reliable structure and can be independently variable, which improves the speed response of the motor, avoids increasing the vibration of the blades during the variable pitch process, and makes the starting and braking process without overshoot, so that the motor can run above the base speed.

[0032] In this embodiment, both ends of the rotating shaft 5 are provided with flat key grooves 6. The rotating shaft 5 is a prior art and can be directly purchased on the market. The rotating shaft 5, the rotating disk 7 and the rotor core 15 are all concentrically and coaxially arranged.

[0033] The implementation principle of this embodiment is as follows: first, install a number of magnetic steel bodies 14 in the magnetic steel slots 13 of the rotor core 15. When the motor is running, the generated heat can flow out from the heat dissipation holes 8 through the heat dissipation duct 12, which has the effect of dissipating heat and cooling the magnetic steel body 14. Then, a number of water cooling tubes 10 are installed in the U-shaped vertical groove 2, and the water cooling tubes 10 are fixed with clamping rings 11 to prevent them from falling off. By setting the water cooling tubes 10, the stator body can be cooled when the motor is running, thereby effectively extending the service life of the overall structure.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An AlNiCo magnet for a permanent magnet synchronous variable pitch motor, comprising a rotating shaft (5), characterized in that: The outer wall of the rotating shaft (5) is mounted with a rotating disk (7), the outer wall of the rotating disk (7) is mounted with a rotor core (15), the outer disk of the rotor core (15) is provided with magnetic steel slots (13), the number of the magnetic steel slots (13) is 7 to 9 and they are arranged adjacent to each other at equal intervals, the magnetic steel slots (13) are each mounted with a magnetic steel body (14), the outer wall of the rotor core (15) is mounted with a stator core (3), the outer disk edge of the stator core (3) is provided with U-shaped vertical slots (2), the number of the U-shaped vertical slots (2) is 6 to 8 and each adjacent U-shaped vertical slot (2) is provided with a mounting hole (1), the mounting holes (1) are arranged at equal intervals on the outer disk edge of the stator body, and the U-shaped vertical slots (2) are each provided with a cooling component.

2. The AlNiCo magnet for a permanent magnet synchronous variable pitch motor according to claim 1, characterized in that: The cooling assembly comprises a water cooling pipe (10), on which a clamping ring (11) is provided, wherein the clamping ring (11) is two in number and is fixed from top to bottom.

3. The AlNiCo magnet for a permanent magnet synchronous variable pitch motor according to claim 1, characterized in that: A heat dissipation circular hole (8) is provided on one side of the magnetic steel slot (13), the number of the heat dissipation circular holes (8) is 7 to 9 and they are arranged corresponding to the magnetic steel slots (13), a heat dissipation air duct (12) is provided at the center of the magnetic steel slot (13), and the heat dissipation air duct (12) is interconnected and associated with the heat dissipation circular holes (8).

4. The AlNiCo magnet for a permanent magnet synchronous variable pitch motor according to claim 1, characterized in that: The inner disk of the stator core (3) is provided with stator slots (4), the number of the stator slots (4) is 7 to 9 and they are adjacently arranged at equal intervals, the stator slots (4) are of a trapezoidal structure and a notch (9) is provided at one end.

5. The AlNiCo magnet for a permanent magnet synchronous variable pitch motor according to claim 1, characterized in that: The material of the magnetic steel body (14) is an aluminum-nickel-cobalt alloy, and the magnetic steel body (14) is a concentric unequal circular ring structure.

6. The AlNiCo magnet for a permanent magnet synchronous variable pitch motor according to claim 1, characterized in that: Both ends of the rotating shaft (5) are provided with flat keyways (6), and the rotating shaft (5), the rotating disc (7) and the rotor core (15) are all arranged concentrically and coaxially.

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