Power detection equipment of high-performance permanent magnet material driving equipment

Abstract

The invention discloses power detection equipment of high-performance permanent magnet material driving equipment, and relates to the technical field of power detection. To solve efficiency problems; the device specifically comprises a detection table top, the top of the detection table top is fixedly provided with a load part, the top of the detection table top is in transmission fit with a mounting plate used for mounting a permanent magnet motor to be detected through a linear driving mechanism, and an input shaft of the load part is provided with a quick connecting shaft part fixedly connected with an output shaft of the permanent magnet motor to be detected. According to the invention, the quick connecting shaft part is arranged, and the output shaft of the to-be-tested permanent magnet motor is synchronously connected with the input shaft of the load part through clamping jaw type connection, so that the connection of a traditional connecting shaft is realized only through the transverse driving of a linear driving mechanism; therefore, the axial position compensation can be ensured, the disassembly and assembly convenience of the to-be-detected permanent magnet motor and the load part can be ensured, the detection efficiency is improved, and a relatively large contact area is ensured through the arrangement of the rubber clamping wheel, so that the connection reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power detection, and in particular to a power detection device for a high-performance permanent magnetic material drive device. Background Art

[0002] Permanent magnet-driven devices utilize the properties of permanent magnets (such as high remanence and coercivity) to achieve energy conversion, power transmission, or motion control. The key is to reduce reliance on external excitation through the constant magnetic field generated by permanent magnets, thereby improving efficiency and performance.

[0003] Permanent magnet synchronous motors and brushless DC motors are both driving devices that use permanent magnet materials. Their basic principles are:

[0004] Permanent magnet synchronous motor (PMSM): The rotor uses permanent magnets, and the stator generates a rotating magnetic field through alternating current. It is highly efficient and energy-saving and is used in electric vehicles and industrial drives.

[0005] Brushless DC motor (BLDC): uses electronic commutation instead of mechanical brushes, has a long life and low noise, and is used in drones and home appliances.

[0006] For motors using permanent magnet materials, their power determines their own performance, so their detection is necessary. However, in traditional technology, load detection is used for motor power detection. It is necessary to use a coupling to connect the output shaft of the motor to the input shaft of the load, and then detect the relationship between the input current, voltage and output speed and torque. The disassembly and assembly during detection is relatively troublesome, affecting the detection efficiency.

[0007] To this end, the present invention proposes a power detection device for a high-performance permanent magnetic material drive device. Summary of the Invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a power detection device for a high-performance permanent magnetic material drive device.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A power detection device for a high-performance permanent magnet material driven device comprises a detection table, a load portion is fixedly provided on the top of the detection table, and a mounting plate for mounting a permanent magnet motor to be tested is coupled via a linear drive mechanism, and an input shaft of the load portion is provided with a quick coupling portion fixedly connected to an output shaft of the permanent magnet motor to be tested;

[0011] The quick coupling portion includes a sleeve transmission-connected to the input shaft of the load portion, a sliding ejector pin slidably connected to the axial direction of the sleeve, and a plurality of clamping arms rotatably connected to the outer side wall of the sleeve in a circular array. The side wall of the sliding ejector pin is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to one end of the clamping arm, and the sliding ejector pin is connected to the inner wall of the sleeve via a spring.

[0012] Preferably, one end of the clamping arm away from the connecting rod is rotatably connected to a rubber clamping wheel, an arc groove is provided on the outer side of the rubber clamping wheel, and the cross-sectional profile of the arc groove is in a hyperbolic shape.

[0013] Furthermore: the power detection device also includes a power supply for supplying power to the permanent magnet motor to be tested, an ammeter for detecting the coil current of the permanent magnet motor to be tested, and a voltmeter for detecting the coil voltage of the permanent magnet motor to be tested.

[0014] On the basis of the above-mentioned scheme: the load part includes a shell and a friction plate 1 and a friction plate 2 that cooperate with each other. The shell is fixed to the top outer wall of the detection table. The friction plate 1 is axially slidably connected to the inner side of the shell. The friction plate 2 is fixed to the end face of the sleeve through a force-applying shaft, and the outer wall of the force-applying shaft is provided with a key-shaped protrusion. The force-applying shaft and the outer wall of the key-shaped protrusion are gap-fitted with the same transition sleeve, and the transition sleeve is rotatably connected to the inner wall of the shell.

[0015] A better solution among the above solutions is: a speed sensor for detecting the speed of the transition sleeve is fixed to one side wall of the shell, and a pressure sensor for detecting the force on the friction plate is provided on the inner wall of the shell.

[0016] As a further solution of the present invention: a plurality of centrifugal blades are provided on the outer side of the friction plate 2, an air inlet is provided on the end surface of the shell at the centrifugal blades, and an exhaust grille is provided on the circumferential surface of the shell at the centrifugal blades.

[0017] At the same time, the mounting plate comprises a sliding plate and a lifting plate slidably connected to the sliding plate through a second guide rod, and the sliding plate and the lifting plate are matched through a dual-speed adjustment assembly.

[0018] As a preferred embodiment of the present invention: the linear drive mechanism includes a guide rod fixed to the inner side of the detection table and slidingly engaged with the sliding plate, and a telescopic pressure applicator fixed to the outer wall of the detection table and with its telescopic end fixed to the side wall of the sliding plate.

[0019] At the same time, the dual-speed adjustment component includes a threaded rod and a screw sleeve, the threaded rod is fixed to the bottom outer wall of the lifting plate, the screw sleeve is rotatably connected to the inner side of the sliding plate, and the screw sleeve is connected to the outer wall of the threaded rod through threads.

[0020] As a better solution of the present invention: the dual-speed adjustment assembly also includes a rotating rack, an outer gear ring and multiple gears, the outer gear ring is fixed to the bottom outer wall of the sliding plate, the multiple gears are arranged in a circular array, and the outer sides of the multiple gears are engaged with the inner side of the outer gear ring, the inner sides of the gears are engaged with the outer wall of the screw sleeve, and the bottoms of the multiple gears are rotatably connected to the same rotating rack.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention provides a quick coupling portion and utilizes a "claw-type" connection to synchronously connect the output shaft of the permanent magnet motor to be tested and the input shaft of the load portion. Compared with the traditional connecting shaft, the connection is achieved only by the lateral drive of the linear drive mechanism. This ensures that axial position compensation can be performed while also ensuring the convenience of disassembly and assembly of the permanent magnet motor to be tested and the load portion, thereby improving detection efficiency.

[0023] 2. The present invention, by providing a rubber clamp wheel, can utilize the rotation of the rubber clamp wheel to compensate for continued axial movement after the rubber clamp wheel contacts the output shaft of the permanent magnet motor to be tested, thereby preventing increased resistance and damage caused by sliding friction. At the same time, an arc groove with a hyperbolic profile is provided on the outer side of the corresponding rubber clamp wheel. Combined with the material of the rubber clamp wheel, a larger contact area can be ensured when the diameter of the output shaft with a circular cross-section changes within a certain range, thereby increasing the reliability of the connection.

[0024] 3. In the present invention, based on the "claw-type" connection, the fixed clamping force of the quick coupling and the output shaft of the permanent magnet motor to be tested is positively correlated with the lateral force provided by the linear drive mechanism to the mounting plate, and through the targeted design of the load part, the load resistance torque provided by the load part is positively correlated with the axial force exerted on the sleeve, so that when the load is greater, the clamping force of the quick coupling on the output shaft of the permanent magnet motor to be tested is greater, and when the load is smaller, the clamping force of the quick coupling on the output shaft of the permanent magnet motor to be tested is adaptively adjusted to be smaller, thereby preventing fatigue damage of components caused by excessive clamping force of the quick coupling and preventing detection distortion caused by small clamping force of the quick coupling.

[0025] 4. The present invention, by providing centrifugal blades, can utilize the rotation of the friction plate 2 itself to drive the centrifugal blades to rotate, so that the internal hot air is discharged from the exhaust grille and the external cold air enters from the air inlet, realizing the heat dissipation process and ensuring reliability.

[0026] 5. The present invention, by setting a lifting plate and a sliding plate, can make targeted adjustments to the permanent magnet motor to be tested with different output shaft heights to ensure reliable use. At the same time, the height adjustment adopts dual-speed adjustment, that is, fast movement when the distance difference is large to ensure efficiency, and slow movement when the distance difference is small to ensure accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the detection principle of a power detection device for a high-performance permanent magnetic material drive device proposed in the present invention;

[0028] Figure 2 This is a schematic diagram of the overall structure of a power detection device for a high-performance permanent magnetic material drive device proposed by the present invention;

[0029] Figure 3 This is a schematic structural diagram of a quick-connect shaft portion of a power detection device for a high-performance permanent magnetic material drive device proposed in the present invention;

[0030] Figure 4 This is a schematic diagram of the front view structure of a colloid clamping wheel of a power detection device for a high-performance permanent magnetic material drive device proposed by the present invention;

[0031] Figure 5 This is a schematic structural diagram of the load portion of a power detection device for a high-performance permanent magnetic material drive device proposed in the present invention;

[0032] Figure 6 This is a schematic diagram of the mounting plate and linear drive mechanism structure of a power detection device for a high-performance permanent magnetic material drive device proposed in the present invention;

[0033] Figure 7 This is a schematic cross-sectional structure diagram of the threaded rod and threaded sleeve of a power detection device for a high-performance permanent magnetic material drive device proposed by the present invention;

[0034] Figure 8 This is a structural schematic diagram of a dual-speed adjustment component of a power detection device for a high-performance permanent magnet material drive device proposed by the present invention.

[0035] In the figure: 1. power supply; 2. ammeter; 3. voltmeter; 4. detection table; 5. load part; 6. quick coupling part; 7. mounting plate; 8. linear drive mechanism; 9. sleeve; 10. connecting rod; 11. clamping arm; 12. rubber clamping wheel; 13. sliding pin; 14. spring 1; 15. arc groove; 16. force shaft; 17. key-shaped protrusion; 18. air inlet; 19. transition sleeve; 20. exhaust grille; 21. friction plate 1; 22. housing; 23. pressure sensor; 24. centrifugal blade; 25. friction plate 2; 26. guide rod 1; 27. sliding plate; 28. telescopic pressure applicator; 29. ​​guide rod 2; 30. dual-speed adjustment assembly; 31. lifting plate; 32. threaded rod; 33. screw sleeve; 34. rotating frame; 35. outer ring gear; 36. gear; 37. speed sensor. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] Example 1:

[0039] A power detection device for high-performance permanent magnetic material drive equipment, such as Figures 1-8 As shown, it includes a detection table 4, the top of which is fixedly provided with a load part 5, and a mounting plate 7 for mounting the permanent magnet motor to be tested, which is driven by a linear drive mechanism 8. The input shaft of the load part 5 is provided with a quick coupling part 6 that is fixedly connected to the output shaft of the permanent magnet motor to be tested.

[0040] The quick coupling portion 6 includes a sleeve 9 that is transmission-connected to the input shaft of the load portion 5, a sliding ejector pin 13 that is slidably connected to the axial direction of the sleeve 9, and a plurality of clamping arms 11 that are rotatably connected to the outer wall of the sleeve 9 in a circular array. The side wall of the sliding ejector pin 13 is rotatably connected to a connecting rod 10, the other end of the connecting rod 10 is rotatably connected to one end of the clamping arm 11, and the sliding ejector pin 13 is connected to the inner wall of the sleeve 9 via a spring 14.

[0041] The end of the clamping arm 11 away from the connecting rod 10 is rotatably connected to a rubber clamping wheel 12 . An arc groove 15 is provided on the outer side of the rubber clamping wheel 12 . The cross-sectional profile of the arc groove 15 is in a hyperbolic shape.

[0042] When the device is in use, the permanent magnet motor to be tested can be installed on the mounting plate 7, and then the mounting plate 7 is driven to move toward the load part 5 side by the linear drive mechanism 8, so that the permanent magnet motor to be tested moves. When the output shaft of the permanent magnet motor to be tested contacts the sliding ejector 13, the linear drive mechanism 8 continues to drive, so that the sliding ejector 13 overcomes the elastic force of the spring 14 and moves, thereby driving the clamping arm 11 to rotate through the connecting rod 10, and using the other end of the clamping arm 11 to gather inward, so that the rubber clamping wheel 12 is in close contact with the outer wall of the output shaft of the permanent magnet motor to be tested to achieve synchronous connection between the load part 5 and the output shaft of the permanent magnet motor to be tested, and then the test can be carried out. After the test is completed, the linear drive mechanism 8 drives the mounting plate 7 to move in the opposite direction. At this time, the sliding ejector 13 is moved outward by the elastic force of the spring 14, and the clamping arm 11 is disengaged from the output shaft of the permanent magnet motor to be tested, completing the disconnection.

[0043] This device, by providing a quick coupling part 6, utilizes a "claw-type" connection to synchronously connect the output shaft of the permanent magnet motor to be tested and the input shaft of the load part 5. Compared with the traditional connecting shaft, the connection is only achieved by the lateral drive of the linear drive mechanism 8. In this way, while ensuring axial position compensation, it can also ensure the convenience of disassembly and assembly of the permanent magnet motor to be tested and the load part 5, thereby improving the detection efficiency.

[0044] In addition, the device is provided with a rubber clamping wheel 12, which can use the rotation of the rubber clamping wheel 12 to compensate for continued axial movement after the rubber clamping wheel 12 contacts the output shaft of the permanent magnet motor to be tested, thereby preventing increased resistance and damage caused by sliding friction. At the same time, an arc groove 15 with a hyperbolic profile is provided on the outer side of the corresponding rubber clamping wheel 12. Combined with the material of the rubber clamping wheel 12, a larger contact area can be ensured when the diameter of the output shaft with a circular cross-section changes within a certain range, thereby increasing the reliability of the connection.

[0045] The power detection device further includes a power supply 1 for supplying power to the permanent magnet motor to be tested, an ammeter 2 for detecting the coil current of the permanent magnet motor to be tested, and a voltmeter 3 for detecting the coil voltage of the permanent magnet motor to be tested.

[0046] The power supply 1 may be equipped with a built-in frequency modulator to control the input power and compare the output power at different input powers.

[0047] The load part 5 includes a shell 22 and a friction plate 1 21 and a friction plate 2 25 that cooperate with each other. The shell 22 is fixed to the top outer wall of the detection table 4. The friction plate 1 21 is axially slidably connected to the inner side of the shell 22. The friction plate 25 is fixed to the end face of the sleeve 9 through the force shaft 16, and the outer wall of the force shaft 16 is provided with a key-shaped protrusion 17. The outer wall gap of the force shaft 16 and the key-shaped protrusion 17 is matched with the same transition sleeve 19, and the transition sleeve 19 is rotatably connected to the inner wall of the shell 22.

[0048] A speed sensor 37 for detecting the speed of the transition sleeve 19 is fixed to one side wall of the housing 22, and a pressure sensor 23 for detecting the force applied to the friction plate 21 is provided on the inner wall of the housing 22.

[0049] When the quick coupling 6 is synchronously connected to the output shaft of the permanent magnet motor to be tested, the permanent magnet motor to be tested will also apply axial pressure to the sleeve 9, which is transmitted to the friction plate 2 25 through the force-applying shaft 16, so that the friction plate 2 25 is tightly fitted with the centrifugal blade 24. At this time, the permanent magnet motor to be tested can be powered by the power supply 1 to start. On the one hand, the ammeter 2 and the voltmeter 3 can detect the input power of the coil, and on the other hand, the speed sensor 37 can detect the speed. At the same time, since the dynamic friction coefficient of the friction plate 1 21 and the friction plate 2 25 is determined, the pressure sensor 23 can detect the contact pressure of the friction plate 1 21 and the friction plate 2 25, so that the dynamic friction force of the friction plate 1 21 and the friction plate 2 25 can be calculated, and then the load resistance torque is calculated according to the contact radius, and then the output power is obtained according to the product of the load resistance torque and the speed.

[0050] In this device, based on the "claw-type" connection, the fixed clamping force of the quick coupling part 6 and the output shaft of the permanent magnet motor to be measured is positively correlated with the lateral force provided by the linear drive mechanism 8 to the mounting plate 7, and through the targeted design of the load part 5, the load resistance torque provided by the load part 5 is positively correlated with the axial force exerted on the sleeve 9, so that when the load is greater, the clamping force of the quick coupling part 6 on the output shaft of the permanent magnet motor to be measured is greater, and when the load is smaller, the clamping force of the quick coupling part 6 on the output shaft of the permanent magnet motor to be measured is smaller, and the quick coupling part 6 is adaptively adjusted. This can prevent the clamping force of the quick coupling part 6 from being too large, causing fatigue damage to the components, and can also prevent detection distortion caused by the small clamping force of the quick coupling part 6.

[0051] The specific method for calculating the resistance torque of the friction plate 1 21 and the friction plate 2 25 is as follows: Assuming that the contact radius of the friction plate 1 21 and the friction plate 2 25 is R, the contact pressure detected by the pressure sensor 23 is F, and the dynamic friction coefficient of the friction plate 1 21 and the friction plate 2 25 is μ, the resistance torque is That is, integrate μFr from 0 to R.

[0052] To solve the reliability problem; Figure 5 As shown, a plurality of centrifugal blades 24 are provided on the outer side of the second friction plate 25 , an air inlet 18 is provided on the end surface of the housing 22 at the centrifugal blades 24 , and an exhaust grille 20 is provided on the circumferential surface of the housing 22 at the centrifugal blades 24 .

[0053] Since friction between friction plate 1 21 and friction plate 2 25 generates heat, if the heat is not dissipated in time, friction plate 1 21 and friction plate 2 25 will heat up and fail. This device, by providing centrifugal blades 24, can utilize the rotation of friction plate 25 itself to drive the centrifugal blades 24 to rotate, so that the internal hot air is discharged from the exhaust grille 20 and the external cold air enters from the air inlet 18, realizing the heat dissipation process and ensuring reliability.

[0054] Since the rotation of the centrifugal blades 24 is also a load, the load of the centrifugal blades 24 at different speeds needs to be calibrated before the first use of the device to eliminate errors. The specific method is to remove the friction plate 21, and at the same time remove the sleeve 9 and the force shaft 16, use a motor with torque sensing to directly connect the force shaft 16, and then drive the motor to rotate. The detection value of the torque sensor at different speeds is the resistance value of the centrifugal blades 24 at different speeds. After the calibration is completed, the record is saved. In the subsequent measurement process, the load resistance plus the resistance of the centrifugal blades 24 at the corresponding speed can be calibrated once and used permanently.

[0055] When the present embodiment is in use, the permanent magnet motor to be tested can be mounted on the mounting plate 7, and then the mounting plate 7 is driven by the linear drive mechanism 8 to move toward the load portion 5, thereby moving the permanent magnet motor to be tested. When the output shaft of the permanent magnet motor to be tested contacts the sliding ejector pin 13, the linear drive mechanism 8 is continuously driven, thereby causing the sliding ejector pin 13 to overcome the elastic force of the spring 14 and move, thereby driving the clamping arm 11 to rotate through the connecting rod 10, and utilizing the other end of the clamping arm 11 to gather inwards, so that the rubber clamping wheel 12 is in close contact with the outer wall of the output shaft of the permanent magnet motor to be tested to achieve the load portion 5 and the permanent magnet motor to be tested. The synchronous connection of the output shaft of the magnetic motor can be tested subsequently. After the test is completed, the linear drive mechanism 8 drives the mounting plate 7 to move in the opposite direction. At this time, the sliding ejector pin 13 is moved outward by the elastic force of the spring 14, and the clamping arm 11 is disengaged from the output shaft of the permanent magnet motor to be tested, completing the disconnection. At the same time, when the quick coupling 6 is synchronously connected to the output shaft of the permanent magnet motor to be tested, the permanent magnet motor to be tested will also apply axial pressure to the sleeve 9, which is transmitted to the friction plate 2 25 through the force shaft 16, so that the friction plate 25 is tightly fitted with the centrifugal blade 24. At this time, the power supply 1 can be used. Power is supplied to start the permanent magnet motor to be tested. On the one hand, the ammeter 2 and voltmeter 3 can detect the input power of the coil, and on the other hand, the speed sensor 37 can detect the speed. At the same time, since the dynamic friction coefficient of the friction plate 1 21 and the friction plate 2 25 is determined, the pressure sensor 23 can detect the contact pressure of the friction plate 1 21 and the friction plate 2 25, thereby calculating the dynamic friction force of the friction plate 1 21 and the friction plate 2 25. Then, the load resistance torque is calculated based on the contact radius, and then the output power is obtained by multiplying the load resistance torque and the speed. In addition, since the rotation of the centrifugal blade 24 is also a load, Therefore, before the first use of the device, the load of the centrifugal blade 24 at different speeds needs to be calibrated to eliminate errors. The specific method is to remove the friction plate 21, and at the same time remove the sleeve 9 and the force shaft 16, use a motor with a torque sensor to directly connect the force shaft 16, and then drive the motor to rotate. The detection value of the torque sensor at different speeds is the resistance value of the centrifugal blade 24 at different speeds. After the calibration is completed, the record is saved. In the subsequent measurement process, the load resistance plus the resistance of the centrifugal blade 24 at the corresponding speed can achieve a one-time calibration for permanent use.

[0056] Example 2:

[0057] A power detection device for high-performance permanent magnetic material drive equipment, such as Figure 6-8 As shown, in order to solve the hunger and thirst problem; this embodiment makes the following improvements on the basis of Example 1: the mounting plate 7 includes a sliding plate 27 and a lifting plate 31 slidingly connected to the sliding plate 27 through a guide rod 29, and the sliding plate 27 and the lifting plate 31 are driven and matched by a dual-speed adjustment component 30, and the linear drive mechanism 8 includes a guide rod 26 fixed to the inner side of the detection table 4 and slidingly matched with the sliding plate 27, and a telescopic pressure applicator 28 fixed to the outer wall of the detection table 4 and whose telescopic end is fixed to the side wall of the sliding plate 27.

[0058] The dual-speed adjustment assembly 30 includes a threaded rod 32 and a screw sleeve 33. The threaded rod 32 is fixed to the bottom outer wall of the lifting plate 31. The screw sleeve 33 is rotatably connected to the inner side of the sliding plate 27, and the screw sleeve 33 is connected to the outer wall of the threaded rod 32 through threads.

[0059] The dual-speed adjustment assembly 30 also includes a rotating frame 34, an outer gear ring 35 and multiple gears 36. The outer gear ring 35 is fixed to the bottom outer wall of the sliding plate 27. The multiple gears 36 are arranged in a circular array, and the outer sides of the multiple gears 36 are engaged with the inner side of the outer gear ring 35, and the inner sides of the gears 36 are engaged with the outer wall of the screw sleeve 33. The bottoms of the multiple gears 36 are rotatably connected to the same rotating frame 34.

[0060] When this embodiment is in use, after installation, if the output shaft of the permanent magnet motor to be tested cannot be at the same height as the sliding ejector pin 13, if the height difference is large, the screw sleeve 33 can be rotated first to make the screw sleeve 33 rotate relatively quickly, and the height of the lifting plate 31 can be adjusted by using the threaded connection between the screw sleeve 33 and the threaded rod 32, thereby adjusting the height of the output shaft. When the height difference is small, the rotating frame 34 can be rotated, and the deceleration effect of the outer gear ring 35 and the gear 36 can be used to make the screw sleeve 33 rotate at a relatively low speed until the output shaft is coaxial with the sliding ejector pin 13.

[0061] This device, by setting the lifting plate 31 and the sliding plate 27, can make targeted adjustments to the permanent magnet motor to be tested with different output shaft heights to ensure reliable use. At the same time, the height adjustment adopts dual-speed adjustment, that is, fast movement when the distance difference is large to ensure efficiency, and slow movement when the distance difference is small to ensure accuracy.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A power detection device for a high-performance permanent magnetic material drive device, comprising a detection table (4), characterized in that: A load portion (5) is fixedly provided on the top of the detection table (4), and a mounting plate (7) for mounting the permanent magnet motor to be tested is coupled thereto via a linear drive mechanism (8); the input shaft of the load portion (5) is provided with a quick coupling portion (6) fixedly connected to the output shaft of the permanent magnet motor to be tested; The quick coupling portion (6) comprises a sleeve (9) transmission-connected to the input shaft of the load portion (5), a sliding ejector pin (13) slidably connected to the axial direction of the sleeve (9), and a plurality of clamping arms (11) rotatably connected to the outer wall of the sleeve (9) in a circular array. The side wall of the sliding ejector pin (13) is rotatably connected to a connecting rod (10), the other end of the connecting rod (10) is rotatably connected to one end of the clamping arm (11), and the sliding ejector pin (13) is connected to the inner wall of the sleeve (9) via a spring (14).

2. The power detection device of a high-performance permanent magnetic material drive device according to claim 1, characterized in that: One end of the clamping arm (11) away from the connecting rod (10) is rotatably connected to a rubber clamping wheel (12), and an arc groove (15) is provided on the outer side of the rubber clamping wheel (12). The cross-sectional profile of the arc groove (15) is in a hyperbolic shape.

3. The power detection device of a high-performance permanent magnetic material drive device according to claim 1, characterized in that: The power detection device further comprises a power supply (1) for supplying power to the permanent magnet motor to be tested, an ammeter (2) for detecting the current of the coil of the permanent magnet motor to be tested, and a voltmeter (3) for detecting the voltage of the coil of the permanent magnet motor to be tested.

4. The power detection device of a high-performance permanent magnetic material drive device according to claim 3, characterized in that: The load part (5) includes a shell (22) and a friction plate 1 (21) and a friction plate 2 (25) that cooperate with each other. The shell (22) is fixed to the top outer wall of the detection table (4). The friction plate 1 (21) is axially slidably connected to the inner side of the shell (22). The friction plate 2 (25) is fixed to the end face of the sleeve (9) through a force-applying shaft (16). The outer wall of the force-applying shaft (16) is provided with a key-shaped protrusion (17). The outer wall of the force-applying shaft (16) and the key-shaped protrusion (17) are gap-fitted with the same transition sleeve (19). The transition sleeve (19) is rotatably connected to the inner wall of the shell (22).

5. The power detection device of a high-performance permanent magnetic material drive device according to claim 4, characterized in that: A rotation speed sensor (37) for detecting the rotation speed of the transition sleeve (19) is fixed to one side wall of the housing (22), and a pressure sensor (23) for detecting the force applied to the friction plate (21) is provided on the inner wall of the housing (22).

6. The power detection device of a high-performance permanent magnetic material drive device according to claim 4, characterized in that: A plurality of centrifugal blades (24) are provided on the outer side of the second friction plate (25); an air inlet (18) is provided on the end surface of the housing (22) at the centrifugal blades (24); and an exhaust grille (20) is provided on the circumferential surface of the housing (22) at the centrifugal blades (24).

7. The power detection device of a high-performance permanent magnetic material drive device according to claim 1, characterized in that: The mounting plate (7) comprises a sliding plate (27) and a lifting plate (31) slidably connected to the sliding plate (27) via a second guide rod (29), and the sliding plate (27) and the lifting plate (31) are coupled in transmission via a dual-speed adjustment assembly (30).

8. The power detection device for a high-performance permanent magnetic material drive device according to claim 7, characterized in that: The linear drive mechanism (8) comprises a guide rod (26) fixed to the inner side of the detection table (4) and slidingly engaged with the sliding plate (27), and a telescopic pressure applicator (28) fixed to the outer wall of the detection table (4) and having its telescopic end fixed to the side wall of the sliding plate (27).

9. The power detection device for a high-performance permanent magnetic material drive device according to claim 7, characterized in that: The dual-speed adjustment assembly (30) includes a threaded rod (32) and a screw sleeve (33), wherein the threaded rod (32) is fixed to the bottom outer wall of the lifting plate (31), and the screw sleeve (33) is rotatably connected to the inner side of the sliding plate (27), and the screw sleeve (33) is connected to the outer wall of the threaded rod (32) through a thread.

10. The power detection device for a high-performance permanent magnetic material drive device according to claim 7, characterized in that: The dual-speed adjustment assembly (30) further includes a rotating frame (34), an outer gear ring (35) and a plurality of gears (36), wherein the outer gear ring (35) is fixed to the bottom outer wall of the sliding plate (27), and the plurality of gears (36) are arranged in a circular array, and the outer sides of the plurality of gears (36) are engaged with the inner side of the outer gear ring (35), and the inner sides of the gears (36) are engaged with the outer wall of the screw sleeve (33), and the bottoms of the plurality of gears (36) are rotatably connected to the same rotating frame (34).

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