Dynamic torque detection device of permanent magnet synchronous motor

Abstract

The utility model relates to the technical field of motor detection, and discloses a dynamic torque detection device of a permanent magnet synchronous motor, which comprises a base, a torque tester fixedly mounted in the middle of a left fixing plate, and a data processor fixedly mounted at the top of the left side of the base. A coupling is installed between the right end of the connecting shaft and an output shaft of the permanent magnet synchronous motor, a distance adjusting assembly is arranged on the top of the right side of the base, a positioning assembly used for fixing the permanent magnet synchronous motor is arranged on the top of the distance adjusting assembly, and a motor driver used for controlling the permanent magnet synchronous motor is further arranged on the top of the base. The threaded rod is screwed to rotate in the lifting block, the lifting block is driven to slide along the inner wall of the sliding groove, then the pressing plate is driven to be combined and folded towards the center, the clamping plate is driven to be combined and clamped on the outer side of the motor to fix and position the motor, and the motor is positioned at the center of the positioning disc. The output shaft of the motor is prevented from deviating from the axis to affect detection precision.

Description

Technical Field

[0001] The utility model relates to the technical field of motor detection, in particular to a dynamic torque detection device for a permanent magnet synchronous motor. Background Art

[0002] A permanent magnet synchronous motor is a synchronous motor that uses permanent magnets to generate a magnetic field. The speed of its rotor is consistent with the current frequency of the stator winding. This motor consists of components such as a stator, a rotor, and end covers. Its working principle is based on the interaction between the rotating magnetic field generated by the stator and the magnetic field generated by the permanent magnets on the rotor. By precisely adjusting the current, the motor rotor is ensured to rotate synchronously with the rotating magnetic field, thereby achieving stable operation.

[0003] After the permanent magnet motor is processed, its performance needs to be tested to ensure its quality before leaving the factory. The dynamic torque of the motor is one of the important parameters to measure the motor performance. The dynamic torque of different types of permanent magnet synchronous motors is also very different. When testing it, due to the different sizes of motors of different models, it is not convenient to adapt to their size for fixed testing. Therefore, further improvement can be made. Utility Model Content

[0004] In order to solve the above-mentioned problems, the present invention provides the following technical solutions: a dynamic torque detection device for a permanent magnet synchronous motor, comprising a base, two fixed plates fixedly installed on the top of the base, a torque tester fixedly installed in the middle of the left fixed plate, a data processor fixedly installed on the left top of the base, a connecting shaft provided in the middle of the torque tester, a coupling installed between the right end of the connecting shaft and the output shaft of the permanent magnet synchronous motor, a spacing adjustment component provided on the top of the right side of the base, a positioning component for fixing the permanent magnet synchronous motor provided on the top of the spacing adjustment component, and a motor driver for controlling the permanent magnet synchronous motor provided on the top of the base.

[0005] As an optimization, the spacing adjustment assembly includes a slide rail fixedly mounted on the top side of the base, and the left end of the slide rail is fixedly mounted on the right fixed plate. The interior of the slide rail is slidably connected to a slider, the interior of the slider is screwed with a screw, and the screw is rotatably connected to the interior of the slide rail. By twisting the screw to rotate inside the slider, the slider will be driven to slide along the inner wall of the slide rail.

[0006] As an optimization, a swivel is fixedly installed at one end of the screw that passes through the slide rail, and a mounting seat for installing the positioning component is fixedly installed on the top of the slider. The swivel can be used to conveniently rotate the screw, thereby conveniently driving the positioning component as a whole to move with the slider.

[0007] As an optimization, the positioning assembly includes a positioning plate fixedly mounted on the top of the mounting seat, a sliding groove is provided inside the positioning plate, a lifting block is slidably connected inside the sliding groove, and a clamping member for closing and clamping the permanent magnet synchronous motor is fixedly mounted on the left side of the lifting block. The motor is fixedly positioned by closing the clamping member and clamping it on the outside of the motor.

[0008] As an optimization, the clamping member includes a pressure plate fixedly installed on the left side of the lifting block, a sleeve plate is provided on the outer side of the pressure plate, and a splint is fixedly installed on the bottom side of the sleeve plate. The internal rotation of the slide groove is connected with a threaded rod, and the threaded rod is screwed to the middle part of the lifting block. By twisting the threaded rod and rotating it inside the lifting block, the lifting block will be driven to slide along the inner wall of the slide groove, and then the pressure plate will be driven to close toward the center.

[0009] As an optimization, the splints are arc-shaped, and the splint array is provided in three groups.

[0010] As an optimization, a rubber pad is provided on one inner side of the splint.

[0011] The beneficial effects of the utility model are:

[0012] The dynamic torque detection device of the permanent magnet synchronous motor rotates inside the lifting block by twisting the threaded rod, which will drive the lifting block to slide along the inner wall of the slide groove, and then drive the pressure plate to merge and retract toward the center, so it will drive the clamping plate to merge and clamp on the outside of the motor to fix the motor, and position the motor at the center of the positioning plate to prevent the output shaft of the motor from deviating from the axis and affecting the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the positioning adjustment structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the motor position adjustment structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the motor positioning structure of the utility model.

[0017] In the figure: 1. Base; 2. Fixed plate; 3. Torque tester; 4. Data processor; 5. Connecting shaft; 6. Coupling; 7. Spacing adjustment assembly; 8. Positioning assembly; 9. Motor driver; 10. Slide rail; 11. Slider; 12. Screw; 13. Swivel; 14. Mounting seat; 15. Positioning plate; 16. Lifting block; 17. Press plate; 18. Sleeve plate; 19. Clamp; 20. Threaded rod. DETAILED DESCRIPTION

[0018] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 A dynamic torque detection device for a permanent magnet synchronous motor comprises a base 1, two fixing plates 2 are fixedly mounted on the top of the base 1, a torque tester 3 is fixedly mounted in the middle of the left fixing plate 2, a data processor 4 is fixedly mounted on the left top of the base 1, a connecting shaft 5 is provided in the middle of the torque tester 3, a coupling 6 is installed between the right end of the connecting shaft 5 and the output shaft of the permanent magnet synchronous motor, a spacing adjustment component 7 is provided on the top of the right side of the base 1, a positioning component 8 for fixing the permanent magnet synchronous motor is provided on the top of the spacing adjustment component 7, and a motor driver 9 for controlling the permanent magnet synchronous motor is also provided on the top of the base 1;

[0021] See also Figure 2-3 The spacing adjustment component 7 includes a slide rail 10 fixedly mounted on the top side of the base 1, and the left end of the slide rail 10 is fixedly mounted on the right fixed plate 2. A slider 11 is slidably connected to the interior of the slide rail 10, and a screw 12 is screwed to the interior of the slider 11. The screw 12 is rotatably connected to the interior of the slide rail 10. By turning the screw 12 to rotate inside the slider 11, the slider 11 is driven to slide along the inner wall of the slide rail 10.

[0022] See also Figure 2-3 The screw 12 passes through one end of the slide rail 10 and is fixedly mounted with a swivel 13. The top of the slider 11 is fixedly mounted with a mounting seat 14 for mounting the positioning assembly 8. The swivel 13 facilitates the rotation of the screw 12, thereby facilitating the overall movement of the positioning assembly 8 following the slider 11, thereby facilitating the adjustment of the position of the permanent magnet synchronous motor.

[0023] See also Figure 4The positioning assembly 8 includes a positioning plate 15 fixedly mounted on the top of the mounting seat 14. A slide groove is provided inside the positioning plate 15. A lifting block 16 is slidably connected to the inside of the slide groove. A clamping member for closing and clamping the permanent magnet synchronous motor is fixedly mounted on the left side of the lifting block 16. By closing the clamping member and clamping it on the outside of the motor, the motor is fixedly positioned and can be positioned at the center of the positioning plate 15 to prevent the output shaft of the motor from deviating from the axis and affecting the detection accuracy.

[0024] See also Figure 4 The clamping member includes a pressure plate 17 fixedly mounted on the left side of the lifting block 16, a sleeve 18 is sleeved on the outer side of the pressure plate 17, and a clamping plate 19 is fixedly mounted on the bottom side of the sleeve 18. The internal rotation of the slide is connected to a threaded rod 20, and the threaded rod 20 is screwed to the middle part of the lifting block 16. By twisting the threaded rod 20 and rotating it inside the lifting block 16, the lifting block 16 will be driven to slide along the inner wall of the slide, and then the pressure plate 17 will be driven to close to the center, and then the motor will be clamped together through the clamping plate 19;

[0025] See also Figure 4 The splint 19 is arc-shaped, and there are three groups of splints 19 arrayed. A rubber pad is provided on one side of the inner side of the splint 19. The rubber pad is clamped on the outside of the permanent magnet synchronous motor, which can increase the friction and improve the clamping and fixing effect of the motor.

[0026] When in use, first place the permanent magnet synchronous motor in the middle of the positioning plate 15, then turn the threaded rod 20 to rotate inside the lifting block 16, which will drive the lifting block 16 to slide along the inner wall of the slide groove, and then drive the pressure plate 17 to merge and retract toward the center, so that the clamping plate 19 will be driven to merge and clamp the outside of the motor to fix the motor and position it in the center of the positioning plate 15;

[0027] Then hold the rotating ring 13 and rotate it, which will drive the screw 12 to rotate inside the slider 11, so it will drive the slider 11 to slide along the inner wall of the slide rail 10, and then drive the positioning assembly 8 as a whole to move with the slider 11, so it will drive the motor close to the coupling 6 until one end of the output shaft of the motor can be connected to the coupling 6. At this time, the motor can be started through the motor driver 9, and then the dynamic torque of the motor can be detected by the torque tester 3, and the data can be collected, processed and displayed by the data processor 4.

[0028] To sum up, the dynamic torque detection device of the permanent magnet synchronous motor rotates inside the lifting block 16 by twisting the threaded rod 20, which will drive the lifting block 16 to slide along the inner wall of the slide groove, and then drive the pressure plate 17 to merge and retract toward the center, so it will drive the clamping plate 19 to merge and clamp the outside of the motor to fix the motor, and position the motor at the center of the positioning plate 15 to prevent the output shaft of the motor from deviating from the axis and affecting the detection accuracy.

[0029] In the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can all be customized according to the description and the drawings.

[0031] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A dynamic torque detection device for a permanent magnet synchronous motor, comprising a base (1), characterized in that: Two fixing plates (2) are fixedly mounted on the top of the base (1), a torque tester (3) is fixedly mounted in the middle of the left fixing plate (2), a data processor (4) is fixedly mounted on the left top of the base (1), a connecting shaft (5) is provided in the middle of the torque tester (3), a coupling (6) is installed between the right end of the connecting shaft (5) and the output shaft of the permanent magnet synchronous motor, a spacing adjustment component (7) is provided on the top of the right side of the base (1), a positioning component (8) for fixing the permanent magnet synchronous motor is provided on the top of the spacing adjustment component (7), and a motor driver (9) for controlling the permanent magnet synchronous motor is also provided on the top of the base (1).

2. The dynamic torque detection device for a permanent magnet synchronous motor according to claim 1, characterized in that: The spacing adjustment assembly (7) includes a slide rail (10) fixedly mounted on the top side of the base (1), and the left end of the slide rail (10) is fixedly mounted on the right fixed plate (2), the interior of the slide rail (10) is slidably connected to a slider (11), the interior of the slider (11) is screwed with a screw (12), and the screw (12) is rotatably connected to the interior of the slide rail (10).

3. The dynamic torque detection device for a permanent magnet synchronous motor according to claim 2, characterized in that: The screw rod (12) passes through one end of the slide rail (10) and is fixedly mounted with a swivel (13); the top of the slider (11) is fixedly mounted with a mounting seat (14) for mounting a positioning assembly (8).

4. The dynamic torque detection device for a permanent magnet synchronous motor according to claim 3, characterized in that: The positioning assembly (8) includes a positioning plate (15) fixedly mounted on the top of the mounting seat (14), a sliding groove is provided inside the positioning plate (15), a lifting block (16) is slidably connected inside the sliding groove, and a clamping member for closing and clamping the permanent magnet synchronous motor is fixedly mounted on the left side of the lifting block (16).

5. The dynamic torque detection device for a permanent magnet synchronous motor according to claim 4, characterized in that: The clamping member includes a pressure plate (17) fixedly mounted on the left side of the lifting block (16), a sleeve plate (18) is sleeved on the outer side of the pressure plate (17), a clamping plate (19) is fixedly mounted on the bottom side of the sleeve plate (18), a threaded rod (20) is rotatably connected to the inside of the sliding groove, and the threaded rod (20) is screwed to the middle part of the lifting block (16).

6. The dynamic torque detection device for a permanent magnet synchronous motor according to claim 5, characterized in that: The clamping plates (19) are arc-shaped, and the clamping plates (19) are arranged in three groups.

7. The dynamic torque detection device for a permanent magnet synchronous motor according to claim 5, characterized in that: A rubber pad is provided on one side of the interior of the clamping plate (19).

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