Rotor magnetizing apparatus and magnetizing method

Abstract

The present application relates to a rotor magnetizing apparatus and a magnetizing method. The rotor magnetizing apparatus comprises a base (100), a fixing mechanism (200), and a magnetizing mechanism (300). The base (100) is fixedly connected to the ground; the fixing mechanism (200) is rotatably connected to the base (100), the fixing mechanism (200) rotates relative to the base (100) around a rotation axis, and the rotation axis is perpendicular to the base (100); the magnetizing mechanism (300) is movably connected to the base (100), and the magnetizing mechanism (300) can move towards or away from the fixing mechanism (200); and the fixing mechanism (200) is used for fixing a rotor to be magnetized, and the magnetizing mechanism (300) is used for magnetizing the rotor.

Description

Rotor magnetizing device and magnetizing method

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 2024113182302, filed on September 20, 2024, and entitled "Rotor magnetizing device and magnetizing method", the contents of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of wind turbine rotor magnetizing, in particular to a rotor magnetizing device and magnetizing method. BACKGROUND

[0004] As a strategic emerging industry, wind power is the most cost-advantageous green energy. In the context of accelerating carbon neutrality and optimizing energy structure in China, wind power has ushered in a new period of development opportunities. Currently, wind power models have a trend of offshore, large-scale, and permanent magnetization. The land wind energy resources have gradually exhausted. In order to increase economic benefits, improve wind energy utilization rate and overall power generation efficiency of wind farms, permanent magnet synchronous generators with simpler structure have become the main force for offshore wind power generation. The magnetic poles of permanent magnet synchronous generators are usually composed of multiple magnetic steels. Efficiently magnetized magnetic steels can improve the uniformity and consistency of the magnetic circuit and reduce hysteresis loss.

[0005] The production method of domestic wind turbines is to assemble the magnetized magnetic steels into rotors in the motor factory. With the development of large-scale permanent magnet wind turbine models, the performance requirements of magnetic steels for electromagnetic design of rotors are increasingly high, and the difficulty of manufacturing process and steps also increases. Therefore, the technical means of installing non-magnetic magnetic steels to the motor and magnetizing the magnetic steels as a whole through electromagnetic coils can not only improve the consistency of magnetic energy of magnetic steels, simplify the assembly process and production efficiency of the motor, but also improve the reliability of permanent magnet generators and better meet the production needs of high-quality and automation of large-power permanent magnet motors.

[0006] In the related art, the rotor is usually magnetized in a horizontal magnetizing structure. Due to the inconsistency of the size of the rotor, the center of gravity of the rotor cannot be located on the center of the rotating shaft without replacing the rotating shaft, so that the rotating shaft cannot be kept horizontal during rotation, thereby affecting the magnetizing effect. SUMMARY

[0007] According to various embodiments of the present application, a rotor magnetizing device and magnetizing method are provided.

[0008] A rotor magnetizing device, the rotor magnetizing device comprising:

[0009] a base fixedly connected to the ground;

[0010] a clamping mechanism rotatably connected to the base, the clamping mechanism being rotatable relative to the base about a rotation axis, the rotation axis being perpendicular to the base;

[0011] a magnetizing mechanism movably connected to the base, the magnetizing mechanism being movable towards or away from the clamping mechanism;

[0012] wherein the clamping mechanism is configured to clamp a rotor to be magnetized, and the magnetizing mechanism is configured to magnetize the rotor.

[0013] In one embodiment, the clamping mechanism comprises:

[0014] a rotating support, one end of the rotating support being fixedly connected to the base, the other end of the rotating support extending away from the base;

[0015] a rotating platform, the rotating platform being rotatably connected to the other end of the rotating support away from the base;

[0016] a clamping flange, the clamping flange being fixedly connected to the rotating platform, the clamping flange being configured to fix the rotor.

[0017] In one embodiment, the magnetizing mechanism comprises:

[0018] a support frame, the support frame being movably connected to the base;

[0019] a magnetizing assembly, the magnetizing assembly being disposed on a side of the support frame facing the clamping mechanism, the magnetizing assembly being connected to the support frame, the magnetizing assembly being movable along a vertical direction of the support frame.

[0020] In one embodiment, the magnetizing assembly comprises:

[0021] a support plate, the support plate being movably connected to the support frame;

[0022] a magnetizing coil, the magnetizing coil being connected to the support plate;

[0023] wherein the magnetizing coil is configured as a racetrack-shaped coil wound by a copper tube, the magnetizing coil comprising an inlet and an outlet, a cooling water source being in communication with the inlet and the outlet to cool the magnetizing coil.

[0024] In one embodiment, the magnetizing assembly further comprises:

[0025] a plurality of shock-absorbing seats, the shock-absorbing seats being arranged in an array between the support plate and the magnetizing coil, the shock-absorbing seats being configured to absorb impact kinetic energy received by the magnetizing coil.

[0026] In one embodiment, the magnetizing mechanism further comprises:

[0027] A first driving motor, a motor base of the first driving motor is fixedly connected to the support frame, an output shaft of the first driving motor is connected to the support plate, and the first driving motor is used to drive the support plate to move relative to the support frame.

[0028] In one of the embodiments, a first track assembly is arranged between the support frame and the support plate, and the first track assembly comprises:

[0029] A first track is fixedly connected to a side of the support frame facing the clamping mechanism;

[0030] A first sliding block is fixedly connected to the support plate, and the first sliding block is slidably arranged in the first track.

[0031] In one of the embodiments, the rotor magnetizing device further comprises a second track assembly arranged between the base and the magnetizing mechanism, and the second track assembly comprises:

[0032] A second track is fixedly connected to the base;

[0033] A second sliding block is fixedly connected to the magnetizing mechanism, and the second sliding block is slidably arranged in the second track.

[0034] In one of the embodiments, the rotor magnetizing device further comprises:

[0035] A second driving motor, a motor base of the second driving motor is fixedly connected to the base, an output shaft of the second driving motor is connected to the magnetizing mechanism, and the second driving motor is used to drive the magnetizing mechanism to move relative to the base.

[0036] A rotor magnetizing method, the rotor magnetizing method uses the rotor magnetizing device as described to magnetize a rotor, and the rotor magnetizing method comprises:

[0037] Clamp the rotor to the clamping mechanism, and mark the initial magnetic pole;

[0038] Adjust the position of the magnetizing mechanism in the vertical direction, and adjust the central position of the magnetizing mechanism in the vertical direction to be in the same plane as the central position of the rotor in the vertical direction;

[0039] Adjust the position of the magnetizing mechanism in the horizontal direction;

[0040] Magnetize each magnetic pole on the rotor.

[0041] The details of one or more embodiments of the present application are presented in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0043] Figure 1 is a schematic diagram of the structure of a rotor magnetizing device provided in an embodiment of this application when a magnetizing rotor is installed;

[0044] Figure 2 is a schematic diagram of the rotor magnetizing device provided in one embodiment of this application when a magnetizing rotor is installed in another direction;

[0045] Figure 3 is a schematic diagram of the structure of the rotor magnetizing device provided in an embodiment of this application when a magnetized rotor is installed at the clamping mechanism end;

[0046] Figure 4 is a schematic diagram of the rotor magnetizing device provided in an embodiment of this application;

[0047] Figure 5 is a schematic diagram of the structure of the rotor magnetizing device provided in an embodiment of this application after the clamping mechanism is connected to the base;

[0048] Figure 6 is a schematic diagram of the structure of the rotor magnetizing device provided in an embodiment of this application after the magnetizing mechanism is connected to the base;

[0049] Figure 7 is a schematic flowchart of a rotor magnetization method provided in an embodiment of this application.

[0050] Reference numerals: Base 100; Foot cup support 110; Lifting ring 120; Clamping mechanism 200; Rotating bracket 210; Rotating platform 220; Clamping flange 230; Magnetizing mechanism 300; Support frame 310; Magnetizing assembly 320; Support plate 321; Magnetizing coil 322; Shock absorber seat 323; First drive motor 330; First lead screw 340; First track assembly 350; First track 351; First slider 352; Second track assembly 400; Second track 410; Second slider 420; Second drive motor 500; Second lead screw 600; Climbing frame 700; Rotor 800. Detailed Implementation

[0051] In order to make the above objectives, features and advantages of the present application more clear and understandable, the detailed description of the embodiments of the present application is made below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and should not be construed as being limited to the embodiments set forth herein, but should be understood to include all possible embodiments that can be made within the scope of the present application.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0056] It is to be understood that when an element as a preamble is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can also be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0057] Referring to FIG. 1 to FIG. 6, an embodiment of the present application provides a rotor magnetizing device, the rotor magnetizing device comprising a base 100, a clamping mechanism 200 and a magnetizing mechanism 300, the base 100 being fixedly connected to the ground; the clamping mechanism 200 being rotatably connected to the base 100, the clamping mechanism 200 rotating relative to the base 100 about a rotation axis, the rotation axis being perpendicular to the base 100; the magnetizing mechanism 300 being movably connected to the base 100, the magnetizing mechanism 300 being capable of moving towards or away from the clamping mechanism 200; wherein the clamping mechanism 200 is used for clamping a rotor 800 to be magnetized, and the magnetizing mechanism 300 is used for magnetizing the rotor 800.

[0058] The technical scheme provides a rotor magnetizing device, the base 100 is used for supporting the clamping mechanism 200 and the magnetizing mechanism 300, the clamping mechanism 200 is used for clamping the rotor 800, the clamping mechanism 200 is rotatably connected to the base 100, so that the magnetizing rotor 800 rotates under the driving of the clamping mechanism 200. The rotation axis of the clamping mechanism 200 is arranged in a perpendicular manner relative to the base 100, that is, the rotation axis of the clamping mechanism 200 is arranged along the vertical direction, so that the gravity of the magnetizing rotor 800 is mainly concentrated on the clamping mechanism 200, rather than keeping the rotation balance. In this way, the magnetizing rotor 800 keeps balance during the magnetizing process, thereby ensuring the magnetizing effect.

[0059] As shown in FIG. 1 and FIG. 2, specifically, the base 100 is formed by full welding of the upper and lower carbon steel plates along the joint. In order to adapt to various models and different weights of the permanent magnet rotor 800, the base 100 needs to have a certain bearing capacity. The upper carbon steel plate is an integral carbon steel plate, and the lower carbon steel plate is slightly smaller in length and width but thicker than the upper steel plate. In this way, on the one hand, the chassis of the base 100 is more stable, and on the other hand, a receiving recess can be formed between the upper and lower carbon steel plates. The foot cup support 110 is fixedly installed in the receiving recess. A plurality of square weight-reducing grooves are formed in the middle of the lower carbon steel plate, which can reduce the weight of the magnetizing device and save the overall manufacturing cost while ensuring the reasonable bearing structure of the rotor 800 rotating unit. The left and right sides of the lower carbon steel plate are both provided with threaded holes for cooperating with the foot cup support 110. The foot cup support 110 is fastened to the lower carbon steel plate by bolts, and in addition, the height of the foot cup support 110 can be adjusted to adjust the level of the upper end surface of the base 100. The upper surface of the upper carbon steel plate is provided with threaded holes at four corner regions, and a lifting ring 120 can be installed for hoisting and transporting the magnetizing device.

[0060] As shown in FIG. 1, FIG. 2, FIG. 4 and FIG. 5, in one embodiment, the clamping mechanism 200 includes a rotating bracket 210, a rotating platform 220 and a clamping flange 230. One end of the rotating bracket 210 is fixedly connected to the base 100, and the other end extends away from the base 100. The rotating platform 220 is rotatably connected to the end of the rotating bracket 210 away from the base 100. The clamping flange 230 is fixedly connected to the rotating platform 220, and the clamping flange 230 is used to fix the rotor 800.

[0061] The rotating support 210 is used to support the rotating platform 220 and the clamping flange 230. Specifically, a plurality of mounting holes for mounting the rotating support 210 are formed at one end of the upper carbon steel plate, and the mounting flange on the rotating support 210 is fastened with the mounting holes through bolts, so as to realize the fixed connection of the rotating support 210 and the base 100. The rotating platform 220 is connected with the rotating support 210 through a bearing, so that the rotating platform 220 can rotate relative to the rotating support 210. The flange plate of the clamping flange 230 is fixedly connected with the rotating platform 220 through bolts. When the rotating platform 220 rotates relative to the rotating support 210, the clamping flange 230 is driven to rotate, thereby driving the magnetized rotor 800 clamped on the clamping flange 230 to rotate. Specifically, the rotating platform 220 adopts a hollow rotating platform 220, which can realize high-precision rotation and can complete accurate positioning control. Moreover, it runs stably, with low noise and small vibration during operation, thereby being conducive to ensuring the magnetizing effect. In addition, the hollow rotating platform 220 also has the advantages of compact structure and small occupied space. In the embodiment, the clamping flange 230 adopts a variable-diameter flange, so that the clamping flange 230 can adapt to rotors 800 of different specifications, thereby improving the application range of the rotor magnetizing device.

[0062] As shown in FIGS. 1-4 and 6, in one embodiment, the magnetizing mechanism 300 includes a support frame 310 and a magnetizing assembly 320. The support frame 310 is movably connected to the base 100. The magnetizing assembly 320 is arranged on the side of the support frame 310 facing the clamping mechanism 200. The magnetizing assembly 320 is connected with the support frame 310 and can move along the vertical direction of the support frame 310.

[0063] The support frame 310 is used to support the magnetizing assembly 320 to ensure that the magnetizing process can run stably. The support frame 310 is movably connected to the base 100, so that the magnetizing assembly 320 can move relative to the base 100 under the driving of the support frame 310. The magnetizing assembly 320 is used to magnetize the rotor 800 to be magnetized. The magnetizing assembly 320 is arranged on the side of the support frame 310 facing the clamping mechanism 200 to magnetize the rotor 800 to be magnetized. The magnetizing assembly 320 can move along the vertical direction of the support frame 310, so that when the rotor 800 to be magnetized is magnetized, the height of the magnetizing assembly 320 can be adjusted through the movement of the magnetizing assembly 320 relative to the support frame 310, so that the height of the magnetizing assembly 320 is adapted to the height of the rotor 800 to be magnetized, thereby ensuring the magnetizing effect.

[0064] Specifically, the support frame 310 is welded by multiple steel plates, the cross-sectional shape of the support frame 310 is approximately trapezoidal, the side surface of the support frame 310 facing the clamping mechanism 200 is a large plane, and the thickness of the support frame 310 gradually decreases from bottom to top. A cover plate is arranged on the circumferential side surface of the support frame 310 to seal the support frame 310, so as to avoid dust accumulation in the support frame 310. A wire climbing frame 700 is installed on the upper end surface of the support frame 310, which is used to fix the incoming and outgoing cables of the magnetizing coil 322 excited by the magnetizing current, and two lifting rings 120 are arranged on the side of the wire climbing frame 700, so as to facilitate the lifting and assembly of the magnetizing equipment.

[0065] As shown in FIGS. 1 to 4 and 6, specifically, the magnetizing assembly 320 includes a support plate 321 and a magnetizing coil 322, the support plate 321 is movably connected with the support frame 310, the magnetizing coil 322 is connected with the support plate 321, and the magnetizing coil 322 is constructed as a racetrack coil wound by a copper pipe. The magnetizing coil 322 includes a water inlet and a water outlet, and a cooling water source is connected with the water inlet and the water outlet to cool the magnetizing coil 322.

[0066] The support plate 321 is used to support the magnetizing coil 322, and the support plate 321 is movably connected with the support frame 310, so that the support plate 321 can move relative to the support frame 310, thereby driving the magnetizing coil 322 to move relative to the support frame 310. Specifically, the support plate 321 can move along the vertical direction relative to the support frame 310. The magnetizing coil 322 is a racetrack coil wound by a flat copper pipe. The magnetizing coil 322 is cooled by arranging the water inlet and the water outlet on the magnetizing coil 322 and connecting the cooling water source with the water inlet and the water outlet, thereby improving the magnetizing efficiency. The cooling water source is a cold water machine, which can circulate heat dissipation for the magnetizing coil 322.

[0067] Specifically, after the flat copper pipe is reinforced and wound by using a special tool skeleton, it is dried and demolded, and then is placed in an epoxy material magnetizing coil 322 shell, wherein the outlet of the shell corresponds to the coil. After the magnetizing coil 322 is rigidly connected with the shell by bolts, the shell is sealed as a whole by using glass glue, and finally the inside of the shell is filled by vacuum pouring glue. The magnetizing coil 322 provided by the embodiment has the following performances: a single-pole magnetizing coil can realize the saturation magnetization of the target magnetic pole without affecting the magnetization state of the adjacent magnetic pole; the temperature of the coil can return to a stable state within a specified range after the magnetization of one magnetic pole of the rotor 800 is completed; the elastic-plastic property and the structural mechanical property of the coil meet the design requirements, and the water and circuit outlets are separated.

[0068] As shown in FIGS. 1-4 and 6, in one of the embodiments, the magnetizing assembly 320 further comprises a plurality of shock-absorbing seats 323 arranged in an array between the support plate 321 and the magnetizing coil 322, and the shock-absorbing seats 323 are used to absorb the impact kinetic energy received by the magnetizing coil 322.

[0069] Specifically, the shock-absorbing seats 323 are nylon shock-absorbing seats 323, and the magnetizing coil 322 is connected between the back plate and the coil support plate 321 through a plurality of nylon shock-absorbing seats 323. Since the magnetic poles of the rotor 800 are magnetized in the same direction as the magnetic field generated by the magnetizing coil 322 after the magnetization of the device is completed, a huge repulsive force in the opposite direction will be generated instantaneously, and therefore the nylon shock-absorbing seats 323 are needed to relieve the repulsive force.

[0070] As shown in FIGS. 1-4 and 6, in one of the embodiments, the magnetizing mechanism 300 further comprises a first driving motor 330, and the motor base of the first driving motor 330 is fixedly connected to the support frame 310. The output shaft of the first driving motor 330 is connected to the support plate 321, and the first driving motor 330 is used to drive the support plate 321 to move relative to the support frame 310.

[0071] Specifically, the motor base of the first driving motor 330 is fixedly connected to the top of the support frame 310. The motor shaft of the first driving motor 330 is fixedly connected to the first lead screw 340, and the first driving block is fixedly connected to the support plate 321. The first lead screw 340 is in transmission connection with the first driving block. When the first driving motor 330 is started, the motor shaft drives the first lead screw 340 to rotate, thereby driving the first driving block to move, and further driving the support plate 321 to move relative to the support frame 310.

[0072] As shown in FIGS. 1-4 and 6, in one of the embodiments, a first rail 351 assembly 350 is arranged between the support frame 310 and the support plate 321. The first rail 351 assembly 350 comprises the first rail 351 and the first sliding block 352. The first rail 351 is fixedly connected to the side of the support frame 310 facing the clamping mechanism 200. The first sliding block 352 is fixedly connected to the support plate 321, and the first sliding block 352 is slidably arranged in the first rail 351.

[0073] The first rail 351 assembly 350 is arranged between the support frame 310 and the support plate 321 to guide the movement of the support plate 321 relative to the support frame 310, so that the support plate 321 can move more reliably relative to the support frame 310. In this embodiment, two first rails 351 spaced apart are arranged on the side of the support frame 310 facing the clamping mechanism 200, and correspondingly two first sliding blocks 352 are arranged on the support plate 321, and the first sliding blocks 352 are in guiding cooperation with the first rails 351. The two first rail 351 assemblies 350 spaced apart are arranged to make the movement of the support plate 321 relative to the support frame 310 more stable.

[0074] As shown in FIGS. 1-5, in one embodiment, the rotor magnetizing device further comprises a second track 410 assembly 400 disposed between the base 100 and the magnetizing mechanism 300, the second track 410 assembly 400 comprising a second track 410 and a second slider 420, the second track 410 being fixedly connected to the base 100; the second slider 420 being fixedly connected to the magnetizing mechanism 300, the second slider 420 being slidably disposed on the second track 410.

[0075] The second track 410 assembly 400 is provided between the base 100 and the magnetizing mechanism 300 to guide the movement of the magnetizing mechanism 300 relative to the base 100. Specifically, the second track 410 is provided on the base 100, and the second slider 420 is fixedly connected to the support frame 310. Two second tracks 410 are provided on the base 100, and two second sliders 420 are provided on the support frame 310, the second sliders 420 corresponding to the second tracks 410 and being guidedly connected thereto.

[0076] Further, the rotor magnetizing device further comprises a second drive motor 500, a motor base of the second drive motor 500 being fixedly connected to the base 100, an output shaft of the second drive motor 500 being connected to the magnetizing mechanism 300, the second drive motor 500 being configured to drive the magnetizing mechanism 300 to move relative to the base 100. The second drive motor 500 drives the magnetizing mechanism 300 to move relative to the base 100. Specifically, the motor base of the second drive motor 500 is fixedly connected to the base 100, the second lead screw 600 is fixedly connected to the motor shaft of the second drive motor 500, the second drive block is fixedly connected to the bottom of the support frame 310, and the second lead screw 600 is drivingly connected to the second drive block.

[0077] As shown in FIG. 7, one embodiment of the present application further provides a magnetizing method of a rotor, the magnetizing method of the rotor being used to magnetize a rotor using the rotor magnetizing device, the magnetizing method of the rotor comprising:

[0078] S100, clamping the rotor to the clamping mechanism and marking the initial magnetic pole;

[0079] S200, adjusting the position of the magnetizing mechanism in the vertical direction, and adjusting the center position of the magnetizing mechanism in the vertical direction to be in the same plane as the center position of the rotor in the vertical direction;

[0080] S300, adjusting the position of the magnetizing mechanism in the horizontal direction;

[0081] S400, magnetizing each magnetic pole on the rotor.

[0082] Specifically, before the rotor is clamped to the clamping mechanism and the initial magnetic pole is marked, the magnetizing coil is connected to the support plate through a nylon shock absorbing seat, and the circuit of the magnetizing coil and the water circuit are connected at the same time, to ensure that the connection is safe and reliable, and a simple water circuit circulation test is performed to determine that the device does not have water leakage. The action logic of the rotor rotating unit and the coil advancing unit is tested. Then the rotor to be magnetized is clamped to the clamping mechanism, and the initial magnetic pole is marked.

[0083] Then, according to the size of the rotor and the magnetizing coil, the center positions of the rotor to be magnetized and the magnetizing coil in the vertical direction are determined to be in the same plane. Specifically, the support plate is driven to move relative to the support frame by the first driving motor, so as to adjust the height of the magnetizing coil, and then the magnetizing coil and the magnetizing position of the rotor to be magnetized are adjusted to the same plane.

[0084] The second driving motor is started to drive the support frame to move towards the clamping mechanism, and then the power supply of the magnetizing coil is started to magnetize the initial magnetic pole of the magnetic pole of the rotor. At the same time of starting the magnetizing power supply, the magnetizing device is in working state, such as a water chiller. During the magnetizing process, the hollow rotating platform is driven to rotate by the motor on the hollow rotating platform, so as to drive the rotor to rotate, and then all the magnetic poles on the rotor are magnetized.

[0085] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0086] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A rotor magnetizing device characterized by comprising: The rotor magnetizing device comprises: a base fixedly connected to the ground; a clamping mechanism rotatably connected to the base, the clamping mechanism rotates relative to the base around a rotation axis, and the rotation axis is perpendicular to the base; a magnetizing mechanism movably connected to the base, the magnetizing mechanism is capable of moving towards or away from the clamping mechanism. The clamping mechanism is used for clamping a rotor to be magnetized, and the magnetizing mechanism is used for magnetizing the rotor.

2. The rotor magnetizing apparatus according to claim 1, characterized by The clamping mechanism comprises: a rotating support, one end of which is fixedly connected to the base, and the other end extends away from the base; a rotating platform rotatably connected to the end of the rotating support away from the base; a clamping flange fixedly connected to the rotating platform, the clamping flange is used for fixing the rotor.

3. A rotor magnetising apparatus according to claim 2, wherein, The rotating platform is connected to the rotating support through a bearing.

4. The rotor magnetizing apparatus according to claim 1, wherein The magnetizing mechanism comprises: a support frame movably connected to the base; a magnetizing assembly arranged on the side of the support frame facing the clamping mechanism, the magnetizing assembly is connected to the support frame, and the magnetizing assembly is movable along the vertical direction of the support frame.

5. A rotor magnetising apparatus according to claim 4, wherein The magnetizing assembly comprises: a support plate movably connected to the support frame; a magnetizing coil connected to the support plate; The magnetizing coil is constructed as a racetrack-shaped coil wound by a copper pipe, the magnetizing coil comprises a water inlet and a water outlet, and a cooling water source is connected to the water inlet and the water outlet to cool the magnetizing coil.

6. A rotor magnetising apparatus according to claim 5, wherein The magnetizing assembly further comprises: a plurality of shock-absorbing seats arranged in an array between the support plate and the magnetizing coil, the shock-absorbing seats are used for absorbing the impact kinetic energy received by the magnetizing coil.

7. The rotor magnetizing apparatus according to claim 5, wherein The magnetizing mechanism further comprises: a first driving motor, a motor base of the first driving motor is fixedly connected to the support frame, an output shaft of the first driving motor is connected to the support plate, and the first driving motor is used for driving the support plate to move relative to the support frame.

8. A rotor magnetising apparatus according to claim 7, wherein, A motor shaft of the first driving motor is fixedly connected to a first screw rod, a first driving block is fixedly connected to the support plate, and the first screw rod is in transmission connection with the first driving block.

9. The rotor magnetizing apparatus according to claim 5, wherein A first track assembly is arranged between the support frame and the support plate, and the first track assembly comprises: a first track fixedly connected to the side of the support frame facing the clamping mechanism; a first sliding block fixedly connected to the support plate, the first sliding block is slidably arranged on the first track.

10. A device for magnetising a rotor as claimed in any one of claims 1 to 9, wherein, The rotor magnetizing device further comprises a second track assembly arranged between the base and the magnetizing mechanism, and the second track assembly comprises: a second track fixedly connected to the base; a second sliding block fixedly connected to the magnetizing mechanism, the second sliding block is slidably arranged on the second track.

11. A rotor magnetising apparatus according to claim 10, wherein, The rotor magnetizing device further comprises: a second driving motor, a motor base of the second driving motor is fixedly connected to the base, an output shaft of the second driving motor is connected to the magnetizing mechanism, and the second driving motor is used for driving the magnetizing mechanism to move relative to the base.

12. The rotor magnetizing apparatus of claim 1, wherein The base comprises an upper carbon steel plate and a lower carbon steel plate, and the upper carbon steel plate and the lower carbon steel plate are fixedly welded.

13. A rotor magnetising apparatus as claimed in claim 12, wherein The upper carbon steel plate and the lower carbon steel plate form a receiving groove therebetween.

14. A rotor magnetising apparatus as claimed in claim 13, wherein The rotor magnetizing device further comprises a foot cup support fixedly connected in the receiving groove.

15. A method of magnetizing a rotor, characterized by The method for magnetizing the rotor uses the rotor magnetizing device as claimed in any one of claims 1-14 to magnetize the rotor, and the method for magnetizing the rotor comprises: clamping the rotor on the clamping mechanism and marking the initial magnetic poles; adjusting the position of the magnetizing mechanism in the vertical direction, and adjusting the central position of the magnetizing mechanism in the vertical direction to be in the same plane as the central position of the rotor in the vertical direction; adjusting the position of the magnetizing mechanism in the horizontal direction; magnetizing each magnetic pole on the rotor.

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