Device for magnetizing stator and measuring magnetic flux

Abstract

The utility model provides a device for stator magnetizing and magnetic flux measurement, which comprises a magnetizing pole core, a magnetic bar and a magnetic flux induction coil, the magnetic bar is connected with the magnetizing pole core, and the magnetic flux induction coil is fixedly connected onto the magnetic bar; the magnetizing coil is used for fixing the magnetizing pole core; the magnetizing pole head is used for magnetizing the magnetizing coil; the magnetizing coil is connected with the magnetizing pole head in a matching manner; an air cylinder used for controlling the stator supporting base to ascend and descend is further arranged below the magnetizing pole core. The air cylinder is connected with the magnetizing pole core through a piston column. The stator supporting base is used for connecting and supporting a stator. Compared with the prior art that magnetization and magnetic flux measurement are respectively completed by two workers, the device for stator magnetization and magnetic flux measurement has the advantages that the working efficiency is improved, the process time is shortened, the operation is simple and convenient, and the working process of stator magnetization and magnetic flux measurement can be realized by controlling pneumatic equipment through one key.

Description

Technical Field

[0001] The utility model relates to the field of magnetoelectric measurement and control equipment, and more specifically, to a device for stator magnetization and magnetic flux measurement. Background Art

[0002] As an important part of an electric motor, the magnetization and magnetic detection of the motor stator play a crucial role in the manufacturing process. During the manufacturing and maintenance of the motor stator, the magnetization (magnetization) and magnetic flux measurement (magnetic detection) of the stator are two key steps. The correct execution of these steps directly affects the performance and lifespan of the motor. Traditionally, these two steps are carried out at different workstations and require two employees to operate separately. This method not only increases the labor cost but also reduces the production efficiency.

[0003] The magnetization process is to generate a magnetic field inside the stator to magnetize the stator, so that the motor can generate a stable and strong magnetic field during operation. The magnetic measurement process is to detect the magnetic distribution and intensity after the stator is magnetized to ensure that its magnetic properties meet the predetermined standards.

[0004] The traditional magnetization process usually involves placing the stator on a magnetizer and generating a magnetic field inside the stator after power-on to magnetize it. This process requires the operator to have certain professional knowledge to ensure that the magnetization effect meets the standards. The operator needs to adjust the current and voltage parameters of the magnetizer according to the specifications and material properties of the stator to achieve the best magnetization effect. In addition, temperature control during the magnetization process is also very important. Excessive temperature may cause a decrease in the magnetic properties of the stator material, affecting the overall performance of the motor.

[0005] On the other hand, the magnetic measurement process is to detect the magnetic distribution and intensity of the stator through professional magnetic detection equipment. The operator needs to place the stator on the magnetic measurement equipment, start the detection program, and monitor the data acquisition process. During the magnetic measurement process, the operator needs to pay attention to the position of the stator and the alignment of the detection head to ensure the accuracy of the detection data. At the same time, the operator also needs to analyze the detection data to determine whether the magnetization effect of the stator meets the expected standards.

[0006] In the traditional manufacturing process, these two processes are carried out at different workstations. Not only do two operators need to take turns to operate, but the stator also needs to be moved between different workstations, increasing the operation time and complexity during the process. This method not only increases the labor cost but also reduces the production efficiency. Especially during mass production, frequent stator movement and multi-station operation are likely to cause operation errors and affect the production quality.

[0007] In addition, traditional magnetization and magnetic flux measurement equipment occupies a large area, resulting in low space utilization rate in the production workshop. In modern production, how to improve production efficiency and space utilization rate is an urgent problem to be solved. There is no prior art device that can complete the two processes of magnetization and magnetic property detection simultaneously in one station during the magnetization process of the stator. This has led to the need for the stator to move between different stations during production, not only increasing the operation time but also increasing the risk of damage to the stator during movement.

[0008] In actual production, due to the different technical levels and experiences of operators, the effects of magnetization and magnetic flux measurement may vary. The influence of such human factors increases the difficulty of quality control during the production process. To ensure that the magnetization effect and magnetic properties of each stator meet the standards, multiple detections and adjustments are usually required, further reducing the time efficiency. Summary of the Utility Model

[0009] The present utility model aims to overcome the defect of low efficiency in the prior art where the magnetization and magnetic flux measurement processes require two-station operations, and provides a device for stator magnetization and magnetic flux measurement.

[0010] To solve the above technical problems, the technical solution of the present utility model is as follows:

[0011] A device for stator magnetization and magnetic flux measurement includes a stator, a magnetization pole core, a magnetic conduction rod, and a magnetic flux induction coil. The magnetic conduction rod is fixedly connected to the magnetization pole core, and the magnetic flux induction coil is fixedly connected to the magnetic conduction rod. The magnetic flux induction coil is provided with a coil lead wire passing through the magnetic conduction rod, and the coil lead wire is used to connect to a magnetic flux meter for measuring the induced magnetic flux.

[0012] The device for stator magnetization and magnetic flux measurement further includes a magnetization coil for fixing the magnetization pole core and a magnetization pole head for magnetizing the magnetization coil. The magnetization coil is cooperatively connected to the magnetization pole head.

[0013] A cylinder for controlling the lifting of the stator support base is further provided below the magnetization pole core. The cylinder is connected to the magnetization pole core through a piston rod. The stator support base is used to connect and support the stator.

[0014] Further, the stator includes a stator housing and magnetic tiles. The stator support base is provided with a groove, and the stator housing is provided with a clamping position for cooperating with the groove.

[0015] Further, there are 4 clamping positions on the stator housing, and they are unevenly distributed on the circumference.

[0016] By adopting the above technical solution, the positioning structure can ensure the accurate positioning of the stator and the stator support base during the installation and mating process, avoiding unstable operation caused by position deviation.

[0017] Further, concave through grooves are provided on both sides of the magnetic charging pole core.

[0018] Further, a boss is provided on the inner surface of the magnetic charging coil, and the concave through groove of the magnetic charging pole core is connected by cooperating with the boss of the magnetic charging coil.

[0019] Through the above technical solution, a tight connection between the magnetic charging pole core and the magnetic charging coil can be achieved, and the design of the concave through groove and the boss facilitates the disassembly, assembly and movement of the staff. The cooperation of the concave through groove and the boss has a self-positioning function. Since the geometric shapes of the groove and the boss are complementary, the boss can be automatically aligned when inserted into the groove to achieve precise positioning. In addition, after the boss is embedded in the groove, it can withstand large shear forces and tensile forces, preventing relative sliding or detachment of the components during use. This connection method is suitable for structures that need to bear large mechanical loads and can improve the reliability and durability of the overall device.

[0020] Further, a lead wire through hole is provided at the bottom of the magnetic charging pole core, and the coil lead wire passes through the inside of the magnetic conduction rod and the lead wire through hole in sequence to be connected with the fluxmeter.

[0021] By adopting the above technical solution, during the process of the stator leaving the magnetic charging coil and the magnetic charging head after magnetic charging, the magnetic flux induction coil can cut the magnetic lines of force generated by the magnetized stator to generate induced magnetic flux, and the coil lead wire of the induction coil passes through the inside of the magnetic conduction rod, and the induced magnetic flux generated by the magnetic flux induction coil is detected by connecting the fluxmeter. The staff can quickly judge the magnetization effect of the stator according to the reading of the fluxmeter. If the detected stator cannot reach the desired magnetization effect, the voltage can be increased subsequently to enhance the magnetization effect.

[0022] Further, the piston rod is also provided with 2 stroke rods for controlling the lifting of the stator support base. The magnetic charging pole core also includes a stroke rod through hole. The stroke rod contacts the bottom of the stator support base through the stroke rod through hole, and the piston rod also includes a lifting column connected to the air cylinder.

[0023] Further, the stator is provided with 2 magnetic tiles, and the magnetic tiles are fixed on the inner surface of the stator housing.

[0024] Further, the air cylinder is provided with an air pipe for connecting pneumatic equipment.

[0025] By adopting the above technical solution, it is possible to realize the smooth entry and exit of the stator into and out of the magnetic charging head before and after magnetic charging and magnetic flux measurement by means of pneumatic equipment.

[0026] Further, the magnetic flux induction coil is fixed on the magnetic conduction rod through epoxy resin.

[0027] By adopting the above technical solution, the position of the coil on the magnetic conduction rod can be ensured to be stable, avoiding loosening or displacement. Epoxy resin has excellent adhesive strength and good electrical insulation performance, and after curing, epoxy resin can form a firm but flexible connection, which helps to reduce the noise generated by the magnetic flux induction coil during operation.

[0028] Compared with the prior art, the beneficial effects of the technical solution of the present utility model are:

[0029] The present utility model provides a device for stator magnetization and magnetic flux measurement, including a stator, a magnetization pole core, a magnetic conduction rod, and a magnetic flux induction coil. The magnetic conduction rod is connected to the magnetization pole core, and the magnetic flux induction coil is fixedly connected to the magnetic conduction rod; the device for stator magnetization and magnetic flux measurement further includes a magnetization coil for fixing the magnetization pole core and a magnetization pole head for magnetizing the magnetization coil; the magnetization coil is cooperatively connected with the magnetization pole head; a cylinder for controlling the lifting of the stator support base is further provided below the magnetization pole core, and the cylinder is connected to the magnetization pole core through a piston rod; the stator support base is used for connecting and supporting the stator.

[0030] Using the device for stator magnetization and magnetic flux measurement of the present utility model, it is possible to complete the two processes of magnetization and magnetic flux measurement simultaneously using the same set of devices and in one working station. Compared with the previous situation where magnetization and magnetic flux measurement respectively required two employees to operate, the work efficiency is improved, the process time is reduced, and at the same time, the operation is simple. By controlling the pneumatic equipment, the work processes of magnetization and magnetic flux measurement can be realized with one key. Description of the Drawings

[0031] Figure 1 Schematic diagram of the device for stator magnetization and magnetic flux measurement according to an embodiment of the present utility model;

[0032] Figure 2 Schematic diagram of the structure of the device for stator magnetization and magnetic flux measurement according to an embodiment of the present utility model when fixing the stator;

[0033] Figure 3 Schematic diagram of the structure of the device for stator magnetization and magnetic flux measurement according to an embodiment of the present utility model when bringing the stator to the magnetization position;

[0034] Figure 4 Schematic diagram of the structure of the magnetization pole core, magnetic conduction rod, and magnetic flux induction coil according to an embodiment of the present utility model;

[0035] Figure 5Schematic diagram of the wiring of the coil lead wire in the embodiment of the present utility model;

[0036] Wherein: 1. Magnetizing pole core; 2. Magnetic conduction rod; 3. Magnetic flux induction coil; 4. Coil lead wire; 5. Magnetizing coil; 6. Magnetizing pole head; 7. Cylinder; 8. Air pipe; 9. Stator; 901. Stator housing; 902. Magnetic tile; 10. Positioning on the stator housing; 11. Groove; 12. Stator support base; 13. Piston rod. Specific implementation mode

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present application shall have the ordinary meaning understood by those of ordinary skill in the art to which the present application belongs. The "first", "second" and similar terms used in the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before the term cover the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0039] Embodiment 1

[0040] As Figures 1-5 shown, this embodiment discloses a device for stator magnetizing and measuring magnetic flux, including a magnetizing pole core 1, a magnetic conduction rod 2 and a magnetic flux induction coil 3. The magnetic conduction rod 2 is fixedly connected to the magnetizing pole core 1, and the magnetic flux induction coil 3 is fixedly connected to the magnetic conduction rod 2;

[0041] The magnetic flux induction coil 3 is provided with a coil lead wire 4 passing through the magnetic conduction rod 2, and the coil lead wire 4 is used to connect to a magnetic flux meter for testing the induced magnetic flux;

[0042] The device for stator magnetizing and measuring magnetic flux further includes a magnetizing coil 5 for fixing the magnetizing pole core 1 and a magnetizing pole head 6 for magnetizing the magnetizing coil; the magnetizing coil 5 and the magnetizing pole head 6 are cooperatively connected;

[0043] Below the magnetic charging pole core 1, there is also a cylinder 7 for controlling the lifting of the stator support base 12. The cylinder 7 is connected to the magnetic charging pole core 1 through a piston rod 13; the stator support base is used to connect and support the stator.

[0044] The stator 9 includes a stator housing 901 and magnetic tiles 902. The stator support base 12 is provided with a groove 11, and the stator housing 901 is provided with a clamping position for cooperating with the groove 11. There are 4 clamping positions on the stator housing 901, and they are unevenly distributed on the circumference.

[0045] The stator 9 is provided with 2 magnetic tiles 902, and the magnetic tiles 902 are fixed on the inner surface of the stator housing 901.

[0046] Fixing the magnetic tiles 902 on the inner surface of the stator housing 901 can improve the magnetic circuit efficiency: the fixation of the magnetic tiles 902 can reduce the loss of magnetic force lines, ensure that more magnetic force lines are concentrated in the air gap between the stator and the rotor, thereby improving the efficiency of the magnetic circuit; in addition, the stator housing 901 usually has good heat conduction performance, and fixing the magnetic tiles 902 on the inner surface of the stator housing 901 helps the heat to be conducted to the external environment faster, improves the heat dissipation performance of the motor, and prevents overheating.

[0047] The magnetic flux induction coil 3 is fixed on the magnetic conduction rod 2 through epoxy resin.

[0048] Epoxy resin has excellent bonding strength and good electrical insulation performance, which can ensure the stable position of the magnetic flux induction coil 3 on the magnetic conduction rod 2 and avoid loosening or displacement; and after curing, epoxy resin can form a firm but flexible connection, which helps to reduce the noise generated by the magnetic flux induction coil 3 during operation.

[0049] Embodiment 2

[0050] As Figures 1-5 shown, this embodiment provides a device for stator magnetic charging and magnetic flux measurement. The technical solution is similar to that of Embodiment 1, and the differences are as follows:

[0051] Concave through grooves are provided on both sides of the magnetic charging pole core 1. The inner surface of the magnetic charging coil 5 is provided with a convex platform, and the concave through grooves of the magnetic charging pole core 1 are connected by cooperating with the convex platform of the magnetic charging coil 5.

[0052] The cooperation of the concave through groove and the convex platform has a self-positioning function. Due to the complementary geometric shapes of the groove and the convex platform, the convex platform can be automatically aligned when inserted into the groove, realizing precise positioning; in addition, after the convex platform is embedded in the groove, it can withstand large shear forces and tensile forces, preventing relative sliding or detachment of the components during use. This connection method is suitable for structures that need to bear large mechanical loads and can improve the reliability and durability of the overall device.

[0053] A lead wire through hole is provided at the bottom of the magnetizing pole core 1, and the coil lead wire 4 passes through the inside of the magnetic conduction rod 2 and the lead wire through hole in sequence to be connected to the fluxmeter.

[0054] During the process when the stator 9 leaves the magnetizing coil 5 and the magnetizing head 6 after magnetization, the magnetic flux induction coil 3 cuts the magnetic lines of force generated by the magnetized stator 9 to generate an induced magnetic flux. The coil lead wire 4 of the magnetic flux induction coil 9 passes through the inside of the magnetic conduction rod 2, and the induced magnetic flux generated by the magnetic flux induction coil 3 is detected through the connection with the fluxmeter. The staff can quickly judge the magnetization effect of the stator 9 according to the reading of the fluxmeter; if the detected stator 9 fails to achieve the desired magnetization effect, the voltage can be increased subsequently to enhance the magnetization effect.

[0055] Embodiment 3

[0056] As Figures 1-5 shown, this embodiment provides a device for magnetizing a stator and measuring magnetic flux. The technical solution is similar to that of Embodiment 1, and the differences are as follows:

[0057] The air cylinder 7 is provided with an air pipe 8 for connecting pneumatic equipment.

[0058] The piston column 13 is also provided with 2 stroke rods for controlling the lifting of the stator support base 12. The magnetizing pole core 1 further includes a stroke rod through hole. The stroke rod contacts the bottom of the stator support base 12 through the stroke rod through hole, and the piston column 13 further includes a lifting column connected to the air cylinder 7.

[0059] As another implementation method, the air cylinder 7 can also be replaced with a corresponding hydraulic system. By setting a hydraulic stroke rod for the hydraulic system, the stator support base can realize the lifting function, so as to realize the magnetic induction coil cutting the magnetic lines of force to generate an induced magnetic flux during the lifting process of the stator.

[0060] Working principle

[0061] Before magnetizing the stator, place the stator on the base. The clamping positions on the circumference of the stator housing correspond to the grooves on the stator support base one by one to ensure the connection and fixation of the stator and the stator support base; at this time, start the pneumatic switch, and the piston column of the air cylinder descends, bringing the stator to the magnetizing position, and then start the magnetizing switch for magnetization to magnetize the stator. After the stator is fully magnetized, pull the pneumatic switch, and the piston column of the air cylinder ascends and drives the stator to rise and gradually leave the magnetizing pole head; during the rising process of the stator, since the stator is magnetized and has magnetism, the induction coil will cut the magnetic lines of force to generate an induced magnetic flux, and the magnetic flux will be displayed through the fluxmeter. Finally, the device completes the two processes of magnetization and magnetic flux measurement simultaneously.

[0062] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A device for stator magnetization and magnetic flux measurement, characterized in that: It comprises a magnetizing pole core (1), a magnetic rod (2) and a magnetic flux induction coil (3), wherein the magnetic rod (2) is fixedly connected to the magnetizing pole core (1), and the magnetic flux induction coil (3) is fixedly connected to the magnetic rod (2); The magnetic flux induction coil (3) is provided with a coil lead wire (4) passing through the magnetic conductive rod (2), and the coil lead wire (4) is used to connect to a flux meter for testing the induced magnetic flux; The device for stator magnetization and magnetic flux measurement also includes a magnetization coil (5) for fixing the magnetization pole core (1) and a magnetization pole head (6) for magnetizing the magnetization coil; the magnetization coil (5) is cooperatively connected with the magnetization pole head (6); A cylinder (7) for controlling the lifting and lowering of the stator support base (12) is also provided below the magnetized pole core (1); the cylinder (7) is connected to the magnetized pole core (1) via a piston column (13); The stator support base (12) is used for connecting and supporting the stator (9).

2. The device for stator magnetization and magnetic flux measurement according to claim 1, characterized in that: The stator (9) comprises a stator housing (901) and a magnetic tile (902); the stator support base (12) is provided with a groove (11), and the stator housing (901) is provided with a latch for cooperating with the groove (11).

3. The device for stator magnetization and magnetic flux measurement according to claim 2, characterized in that: The stator housing (901) is provided with four latching positions which are unevenly distributed on the circumference.

4. The device for stator magnetization and magnetic flux measurement according to claim 1, characterized in that: Concave through grooves are provided on both sides of the magnetized pole core (1).

5. The device for stator magnetization and magnetic flux measurement according to claim 4, characterized in that: The inner surface of the magnetizing coil (5) is provided with a boss, and the concave through groove of the magnetizing pole core (1) is connected by matching with the boss of the magnetizing coil (5).

6. The device for stator magnetization and magnetic flux measurement according to claim 1, characterized in that: A lead wire through hole is provided at the bottom of the magnetized pole core (1), and the coil lead wire (4) passes through the inside of the magnetic conductive rod (2) and the lead wire through hole in sequence to be connected to the flux meter.

7. The device for stator magnetization and magnetic flux measurement according to claim 1, characterized in that: The piston column (13) is also provided with two travel rods for controlling the lifting and lowering of the stator support base (12); the magnetized pole core (1) also includes a travel rod through hole, the travel rod is in contact with the bottom of the stator support base (12) through the travel rod through hole, and the piston column (13) also includes a lifting column connected to the cylinder (7).

8. The device for stator magnetization and magnetic flux measurement according to claim 1, characterized in that: The stator (9) is provided with two magnetic tiles (902), and the magnetic tiles (902) are fixed on the inner surface of the stator housing (901).

9. The device for stator magnetization and magnetic flux measurement according to claim 1, characterized in that: The cylinder (7) is provided with an air pipe (8) for connecting to pneumatic equipment.

10. The device for stator magnetization and magnetic flux measurement according to claim 1, characterized in that: The magnetic flux induction coil (3) is fixed on the magnetic conductive rod (2) by epoxy resin.

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