Permanent magnet type stepping motor function test equipment

Abstract

The invention provides a permanent magnet type stepping motor function test device, and belongs to the technical field of motor control and test, the permanent magnet type stepping motor function test device comprises a support frame, and further comprises a cavity shell fixedly connected to the side wall of the support frame, and the cavity shell is connected with a permanent magnet type stepping motor body through an adaptive clamping assembly arranged on the inner wall of the cavity shell; the side frame is fixedly connected to the side wall of the supporting frame, a bearing seat is fixedly connected to the top of the side frame, a linkage rod is detachably connected to the inner wall of the bearing seat, and the linkage rod is connected with the output end of the permanent magnet stepping motor body through a linkage fine adjustment concentric assembly arranged at the end, away from the bearing seat, of the linkage rod; according to the application, through the arrangement of the adaptive clamping assembly, the multiple groups of circumferentially distributed clamping rods are matched with the strong tension spring, and the adjustable limiting design of the limiting assembly is combined, so that the permanent magnet stepping motors with different outer diameters and shapes can be adapted without replacing a fixing structure, and the use cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor control and testing, in particular to a permanent magnet type stepping motor function test device. BACKGROUND

[0002] The permanent magnet type stepping motor is an execution element that converts electric pulse signals into angular displacement or linear displacement by using permanent magnets to establish an excitation magnetic field. It is widely used in the fields of automation equipment, precision instruments, medical devices, etc. due to its advantages of high positioning accuracy, fast response speed, stable operation, etc. Since its performance directly affects the operation accuracy and reliability of downstream equipment, it is necessary to accurately test its torque, speed, output stability and other key function parameters during production, shipment and operation and maintenance to screen out unqualified products and ensure the safe operation of equipment.

[0003] For example, a stepping motor test tool disclosed in Chinese Patent No. CN221100978U includes a bottom plate, a pressing mechanism mounted above the bottom plate, and the pressing mechanism is used to clamp the motor to be tested. The patent sets a pressing mechanism and a speed reduction mechanism. When testing the motor, the motor to be tested is placed in the pressing structure, the motor is quickly clamped, then the weight is hung on the wire reel through the lead wire, at this time the terminal post is electrified, the motor is started to rotate to drive the worm on the fixed sleeve to rotate, through the meshing of the worm and the worm gear, the worm gear is driven to rotate, at the same time the connecting shaft rotates to drive the weight on the wire reel to move up and down, so that the speed of the motor is reduced through the worm and the worm gear, not only prolongs the detection time, but also better controls the lifting of the weight, avoids the influence of the weight shaking on the test, and improves the test precision.

[0004] For example, a stepping motor test tool disclosed in Chinese Patent No. CN220855110U includes a test seat, a moving seat, a support frame, a motor positioning seat, an auxiliary frame, a connecting frame, a connecting shaft, a supporting plate, a test box group, a pressing frame and an electric cylinder. The above-mentioned device is provided with moving wheels and a support frame at the lower end face of the test seat, so that the support frame can be turned up when the device needs to be moved, and the device can be moved flexibly through the moving wheels. When testing is needed, the support frame can be turned up to realize stable placement of the device. At the same time, the test box group is used as a load for testing the motor, and the operator can easily add weight to change the load quality, which has the advantages of convenient operation and easy testing in different ways.

[0005] However, the above device still has certain deficiencies: 1. The clamping structure of the fixed stepping motor has a narrow adaptive range, and is a simple clamping structure. Different motors of different diameters and shapes need to be frequently replaced with clamps, which not only increases the use cost, but also easily causes the motor to rotate circumferentially or loosen axially during clamping, resulting in distorted test data; 2. The coaxiality correction of the motor output end and the test linkage component is difficult, the existing adjustment structure is complex to operate, time-consuming, and inconvenient to disassemble, and the coaxiality deviation easily causes torque, speed and other parameter test errors, affecting the test accuracy; 3. During the torque test process, the rope is prone to sliding and stacking, causing unstable torque transmission, and a humid environment will exacerbate the rope slipping, further reducing the test reliability, and the existing equipment lacks effective anti-skid and anti-winding dry protection design.

[0006] Therefore, we improve it and propose a permanent magnet stepping motor function test equipment to solve the above problems. SUMMARY

[0007] The purpose of the present application is to solve the problems of the current stepping motor clamping structure, which has a narrow adaptive range, needs to be frequently replaced with clamps, has a high cost, and is prone to loosening and deviation during clamping, resulting in distorted test data, complex coaxiality correction operation, and inconvenient disassembly, which easily causes test errors and affects accuracy, and the rope is prone to sliding and stacking during torque testing, a humid environment exacerbates the rope slipping, lacks anti-skid and anti-winding dry protection, and has low reliability.

[0008] In order to achieve the above-mentioned purpose of the application, the following technical solutions are provided: A permanent magnet stepping motor function test equipment, comprising a support frame, further comprising: A cavity shell is fixedly connected to the side wall of the support frame, and the cavity shell is connected with the permanent magnet stepping motor body through the adaptive clamping assembly arranged on the inner wall of the cavity shell; A side frame is fixedly connected to the side wall of the support frame, and a bearing seat is fixedly connected to the top of the side frame, a linkage rod is detachably connected to the inner wall of the bearing seat, and the linkage rod is connected with the output end of the permanent magnet stepping motor body through the linkage fine adjustment concentric assembly arranged on the end of the linkage rod away from the bearing seat; A positioning frame is fixedly connected to the side wall of the side frame, and a dry protection box is fixedly connected to the inner wall of the positioning frame; The adaptive clamping assembly comprises a plurality of clamping rods, strong tension springs and anti-skid extrusion heads; A limiting assembly is arranged on the side wall of the cavity shell, and the limiting assembly cooperates with the adaptive clamping assembly; An anti-skid and anti-winding assembly is arranged on the outer wall of the linkage rod.

[0009] As a preferred technical solution of the present application, the limiting assembly comprises A plurality of guide rods are fixedly connected to the side wall of the cavity shell and are circumferentially distributed about the cavity shell, and one end of the guide rod away from the cavity shell is fixedly connected to a limiting plate; A linkage frame is slidingly connected to the outer wall of the guide rod, and the outer wall of the linkage frame is fixedly connected with a driving plate, the outer wall of the driving plate is threadedly connected with an adjusting screw A connected in rotation with the cavity shell, and one end of the adjusting screw A away from the cavity shell is fixedly connected with a knob A; A plurality of limiting rods are fixedly connected to the side wall of the linkage frame and are circumferentially distributed along the linkage frame.

[0010] As a preferred technical solution of the present application, the linkage fine-tuning concentric assembly comprises: A linkage shell is fixedly connected to one end of the linkage rod away from the bearing seat; A plurality of L-shaped clamping blocks are slidingly connected to the inner wall of the linkage shell through a plurality of T-shaped sliding blocks fixedly connected to the outer wall of the L-shaped clamping block and symmetrically distributed along the horizontal direction of the L-shaped clamping block, and the inner wall of the L-shaped clamping block abuts against the outer diameter of the output end of the permanent magnet type stepping motor body.

[0011] As a preferred technical solution of the present application, the anti-skid and anti-winding assembly comprises: A winding roller is fixedly connected to the outer wall of the linkage rod, and the outer wall of the winding roller is fixedly connected with a driven gear ring; A spiral groove is formed in the outer wall of the winding roller, the inner wall of the spiral groove is provided with a winding rope, one end of the winding rope is fixedly connected to the inner wall of the spiral groove, and the other end is fixedly connected with a counterweight.

[0012] As a preferred technical solution of the present application, the bottom of the drying protection box is fixedly connected with an air inlet box, the inner wall of the air inlet box is fixedly connected with a heating wire, the inner wall of the air inlet box is further fixedly connected with a plurality of electric fans linearly distributed along the air inlet box, and the inner wall of the drying protection box is fixedly connected with a plurality of air deflectors symmetrically distributed about the vertical direction of the drying protection box.

[0013] As a preferred technical solution of the present application, the inner wall of the drying protection box is rotatably connected with an adjusting screw B, the outer wall of the adjusting screw B is fixedly connected with a driving gear meshing with the driven gear ring, the outer wall of the adjusting screw B is threadedly connected with a moving frame, the side wall of the moving frame is fixedly connected with a rope ring, and the rope ring is sleeved on the outer wall of the winding rope.

[0014] As a preferred technical solution of the present application, the inner wall of the linkage shell is slidingly connected with a transverse fine-tuning frame, the inner wall of the transverse fine-tuning frame is rotatably connected with a bidirectional screw, the outer wall of the bidirectional screw is threadedly connected with a plurality of moving blocks symmetrically distributed about the vertical direction of the bidirectional screw, and the moving blocks are slidingly connected with the transverse fine-tuning frame, the side wall of the moving block is fixedly connected with a clamping block, the clamping block abuts against the side wall of the L-shaped clamping block, and the outer wall of the bidirectional screw is fixedly connected with a knob B.

[0015] As a preferred technical solution of this application, the outer walls of the multiple sets of L-shaped card blocks are located on the same vertical reference plane, and the horizontal distance from the top of the inner wall of the multiple sets of L-shaped card blocks to the vertical reference plane decreases sequentially.

[0016] As a preferred technical solution of this application, multiple sets of clamping rods are slidably connected to the inner wall of the cavity shell and are distributed circumferentially along the cavity shell. Both the clamping rods and the outer wall of the cavity shell are provided with uniformly distributed limiting holes. A fixing plate is fixedly connected to the outer wall of the clamping rod. A strong tension spring is sleeved on the outer wall of the clamping rod and fixedly connected between the inner wall of the cavity shell and the side wall of the fixing plate. An anti-slip extrusion head is fixedly connected to the end of the clamping rod away from the cavity shell. Multiple sets of anti-rotation strips are fixedly connected to the outer wall of the clamping rod and are distributed circumferentially along the clamping rod. The anti-rotation strips are slidably connected to the cavity shell.

[0017] As a preferred technical solution of this application, a strong spring is fixedly connected to the side wall of the T-shaped slider, and the end of the strong spring away from the T-shaped slider is fixedly connected to the linkage housing.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. By using multiple sets of circumferentially distributed clamping rods with strong tension springs and adjustable limit design of the limiting component, the device can adapt to permanent magnet stepper motors of different outer diameters and shapes without changing the fixed structure, reducing the cost of use. At the same time, the full-enclosed clamping, combined with anti-rotation bars and anti-slip extrusion heads, effectively restricts the circumferential rotation and axial loosening of the motor, ensuring that the motor position remains constant during the test, laying the foundation for the accuracy of the test data. This solves the problems of narrow compatibility of stepper motor clamping structures in the existing technology, the need for frequent clamping changes, high cost, and easy loosening and displacement of the clamping, which leads to the distortion of test data. 2. By using multiple sets of L-shaped blocks with different vertical reference planes in the linkage fine-tuning concentric component to elastically clamp the outer diameter of the motor output end, and in conjunction with the radial fine-tuning structure of the transverse fine-tuning frame, the coaxiality correction between the motor output end and the linkage rod can be quickly completed. This reduces the test errors of parameters such as torque and speed caused by coaxiality deviation, and significantly improves the accuracy of test data. At the same time, the combination design of the T-shaped slider and the clamping block takes into account both the requirements of quick disassembly and assembly and stable clamping, improves test efficiency, and solves the problems of complex coaxiality correction operation and inconvenient disassembly and assembly in the existing technology, where deviation can easily cause test errors and affect accuracy. 3. Through the anti-slip and anti-overlapping wire assembly, the spiral groove guides the orderly winding of the rope and the synchronous axial movement of the rope loop and the winding roller, avoiding the problems of rope slippage and overlap, ensuring the accuracy, stability and repeatability of torque transmission. At the same time, the drying and protection box, through the synergistic action of heating wire, electric fan and air guide plate, quickly removes moisture from the test environment, preventing the rope from getting damp and slipping, further improving the reliability and practicality of the testing mechanism. It solves the problems of easy slippage and overlap of torque testing ropes, increased slippage due to moisture, lack of anti-slip and anti-overlapping and drying protection, and low reliability in the existing technology. Attached Figure Description

[0019] Figure 1 This is one of the overall schematic diagrams of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is the second overall schematic diagram of the present invention; Figure 5 This is a schematic diagram of the internal structure of the cavity shell of the present invention; Figure 6 This is a schematic diagram of the guide rod structure of the present invention; Figure 7 This is a schematic diagram of the limiting plate part of the present invention; Figure 8 This is a cross-sectional view of the linkage housing of the present invention; Figure 9 This is a schematic diagram of the transverse fine-tuning frame structure of the present invention; Figure 10 This is a cross-sectional view of the drying and protective box of the present invention; Figure 11 This is a schematic diagram of the winding roller part of the present invention.

[0020] In the diagram: 1. Support frame; 2. Hollow housing; 3. Clamping rod; 4. Strong tension spring; 5. Limiting hole; 6. Anti-slip extrusion head; 7. Anti-rotation strip; 8. Guide rod; 9. Limiting plate; 10. Linkage frame; 11. Drive plate; 12. Adjusting screw A; 13. Knob A; 14. Limiting rod; 15. Permanent magnet stepper motor body; 16. Linkage housing; 17. L-shaped locking block; 18. T-shaped slider; 19. Strong spring; 20. Lateral fine-tuning frame; 21. Bidirectional screw 22. Moving block; 23. Clamping block; 24. Knob B; 25. Linkage rod; 26. Side frame; 27. Bearing seat; 28. Positioning frame; 29. ​​Drying and protective box; 30. Air inlet box; 31. Heating wire; 32. Electric fan; 33. Air guide plate; 34. Winding roller; 35. Driven gear ring; 36. Adjusting screw B; 37. Drive gear; 38. Moving frame; 39. Rope ring; 40. Spiral groove; 41. Rope winding; 42. Counterweight; 43. Fixing plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-11 This invention proposes a functional testing device for a permanent magnet stepper motor, including a support frame 1, and further comprising: The cavity housing 2 is fixedly connected to the side wall of the support frame 1. The cavity housing 2 is connected to the permanent magnet stepper motor body 15 through the adapter clamping assembly set on the inner wall of the cavity housing 2. Side frame 26 is fixedly connected to the side wall of support frame 1, and a bearing seat 27 is fixedly connected to the top of side frame 26. A linkage rod 25 is detachably connected to the inner wall of bearing seat 27, and the linkage rod 25 is connected to the output end of permanent magnet stepper motor body 15 through a linkage fine-tuning concentric component set at the end of linkage rod 25 away from bearing seat 27. Positioning frame 28 is fixedly connected to the side wall of side frame 26, and a drying and protective box 29 is fixedly connected to the inner wall of positioning frame 28; Adaptive clamping components, including: Multiple sets of clamping rods 3 are slidably connected to the inner wall of the cavity shell 2 and are distributed in a circular pattern along the cavity shell 2. The clamping rods 3 and the outer wall of the cavity shell 2 are both provided with uniformly distributed limiting holes 5. The outer wall of the clamping rods 3 is fixedly connected to a fixing plate 43. A strong tension spring 4 is sleeved on the outer wall of the clamping rod 3, and the strong tension spring 4 is fixedly connected between the inner wall of the cavity shell 2 and the side wall of the fixing plate 43; The anti-slip extrusion head 6 is fixedly connected to the end of the clamping rod 3 away from the cavity housing 2. When installing the permanent magnet stepper motor body 15, a hollow conical guide (not shown in the figure) can be inserted into the center of the cavity housing 2. The conical outer wall simultaneously extrudes the inclined surfaces at the ends of multiple circumferentially distributed clamping rods 3, forcing all clamping rods 3 to move radially outward synchronously, thereby forming a receiving space in the center. Then, the permanent magnet stepper motor body 15 is placed into this space, and the conical guide is removed. The elastic restoring force of the strong tension spring 4 drives the clamping rod 3 to retract radially, so that the anti-slip extrusion head 6 fits tightly against the outer wall of the motor body, achieving synchronous, fast and stable initial clamping. The anti-rotation strip 7 restricts the circumferential rotation of the clamping rod 3 to prevent the clamping from loosening. A limiting component is provided on the side wall of the cavity housing 2, and the limiting component cooperates with the adapter clamping component; Anti-slip and anti-overlapping line components are installed on the outer wall of the linkage rod 25.

[0023] like Figure 7 As shown, the limiting component includes Multiple sets of guide rods 8 are fixedly connected to the side wall of the cavity shell 2 and are distributed circumferentially about the cavity shell 2. The end of the guide rod 8 away from the cavity shell 2 is fixedly connected to a limit plate 9. Linkage frame 10 is slidably connected to the outer wall of guide rod 8, and a drive plate 11 is fixedly connected to the outer wall of linkage frame 10. An adjusting screw A12 that is rotatably connected to the cavity shell 2 is threadedly connected to the outer wall of drive plate 11. A knob A13 is fixedly connected to the end of adjusting screw A12 away from the cavity shell 2. Multiple sets of limiting rods 14 are fixedly connected to the side wall of the linkage frame 10 and are distributed circumferentially along the linkage frame 10. Rotating the knob A13 drives the adjusting screw A12 to rotate, and the drive plate 11 drives the linkage frame 10 to move axially along the guide rod 8, so that the multiple sets of circumferentially distributed limiting rods 14 are inserted into the limiting holes 5 corresponding to the clamping rod 3 and the cavity housing 2, locking the radial position of the clamping rod 3, adapting to motor bodies with different outer diameters and shapes, and completing the fixation.

[0024] like Figure 8 As shown, the interconnected fine-tuning concentric component includes: The linkage housing 16 is fixedly connected to the end of the linkage rod 25 away from the bearing seat 27; Multiple sets of L-shaped locking blocks 17 are slidably connected to the inner wall of the linkage housing 16 via multiple sets of T-shaped sliders 18 that are fixedly connected to the outer wall of the L-shaped locking blocks 17 and symmetrically distributed along the horizontal direction of the L-shaped locking blocks 17. The inner wall of the L-shaped locking blocks 17 abuts against the outer diameter of the output end of the permanent magnet stepper motor body 15. When the output end of the permanent magnet stepper motor body 15 is connected to the linkage fine-tuning concentric component, the L-shaped locking blocks 17 move radially along the linkage housing 16 under the elastic action of the strong spring 19 via the T-shaped sliders 18. Multiple sets of L-shaped locking blocks 17 with different inner walls perpendicular to the reference plane are elastically locked to the outer wall of the output end of the permanent magnet stepper motor body 15. At this time, the output end of the permanent magnet stepper motor body 15 matches the matching L-shaped locking blocks 17.

[0025] like Figures 1-3 As shown, the anti-slip and anti-overlapping line assembly includes: The winding roller 34 is fixedly connected to the outer wall of the linkage rod 25, and a driven toothed ring 35 is fixedly connected to the outer wall of the winding roller 34. A spiral groove 40 is formed on the outer wall of the winding roller 34. A winding rope 41 is provided on the inner wall of the spiral groove 40. One end of the winding rope 41 is fixedly connected to the inner wall of the spiral groove 40, and the other end is fixedly connected to a counterweight 42. During functional testing, the permanent magnet stepper motor body 15 drives the linkage rod 25 to rotate around the bearing seat 27, and the winding roller 34 rotates synchronously. The winding rope 41 winds or releases along the trajectory of the spiral groove 40, and the counterweight 42 provides the torque required for the test.

[0026] likeFigure 10 As shown, an air inlet box 30 is fixedly connected to the bottom of the drying and protective box 29. A heating wire 31 is fixedly connected to the inner wall of the air inlet box 30. Multiple sets of electric fans 32 are also fixedly connected to the inner wall of the air inlet box 30 in a straight line. Multiple sets of air guide plates 33 are fixedly connected to the inner wall of the drying and protective box 29 in a symmetrical arrangement about the vertical direction of the drying and protective box 29. When the drying and protective box 29 is working, the heating wire 31 heats the air, the electric fan 32 sends the hot air into the box, and the air guide plates 33 guide the airflow to be evenly distributed, quickly creating a dry test environment, preventing the coiled rope 41 from slipping due to moisture, and ensuring the stability of torque transmission.

[0027] like Figures 10-11 As shown, an adjusting screw B36 is rotatably connected to the inner wall of the drying and protective box 29. A drive gear 37 that meshes with the driven gear ring 35 is fixedly connected to the outer wall of the adjusting screw B36. A movable frame 38 is threadedly connected to the outer wall of the adjusting screw B36. A rope ring 39 is fixedly connected to the side wall of the movable frame 38 and is sleeved on the outer wall of the wound rope 41. The linkage rod 25 drives the driven gear ring 35 to rotate, which meshes with the drive gear 37 to drive the adjusting screw B36 to rotate. The movable frame 38 drives the rope ring 39 to move axially synchronously to avoid the wound rope 41 from overlapping and tangling. To prevent the movable frame 38 from rotating with the adjusting screw B36, a fixing rod (not shown in the figure) can be added to limit the direction of the movable frame 38. The fixing rod is slidably connected to the movable frame 38 and fixedly connected to the inner wall of the drying and protective box 29.

[0028] like Figure 9 As shown, a transverse fine-tuning frame 20 is slidably connected to the inner wall of the linkage housing 16. A bidirectional screw 21 is rotatably connected to the inner wall of the transverse fine-tuning frame 20. Multiple sets of moving blocks 22, symmetrically distributed about the vertical direction of the bidirectional screw 21, are threadedly connected to the outer wall of the bidirectional screw 21. The moving blocks 22 are slidably connected to the transverse fine-tuning frame 20. A clamping block 23 is fixedly connected to the side wall of the moving block 22, and the clamping block 23 abuts against the side wall of the L-shaped locking block 17. A knob B24 is fixedly connected to the outer wall of the bidirectional screw 21. Rotating the knob B24 drives the bidirectional screw 21 to rotate, driving the moving block 22 to slide along the transverse fine-tuning frame 20. The clamping block 23 clamps the corresponding protruding L-shaped locking block 17 to achieve clamping connection. When rotating, the strong spring 19 and the slidable transverse fine-tuning frame 20 work together to make the angle of rotation of the output end of the permanent magnet stepper motor body 15 and the linkage rod 25 rotate so as to achieve adaptive fine-tuning, that is, adaptive correction of the coaxiality of the motor output end and the linkage rod 25.

[0029] like Figure 9As shown, the outer walls of multiple sets of L-shaped blocks 17 are located on the same vertical reference plane. The horizontal distance from the top of the inner wall of multiple sets of L-shaped blocks 17 to the vertical reference plane decreases sequentially. The L-shaped blocks 17 with the horizontal distance from the vertical reference plane decreasing sequentially can be adapted to the output end diameter of the permanent magnet stepper motor body 15 of different diameters, thereby improving the adaptability of the linkage structure.

[0030] like Figure 7 As shown, multiple sets of anti-rotation strips 7 are fixedly connected to the outer wall of the clamping rod 3 and are distributed circumferentially along the clamping rod 3. The anti-rotation strips 7 are slidably connected to the cavity shell 2. The anti-rotation strips 7 restrict the circumferential rotation of the clamping rod 3 and prevent the clamping from loosening.

[0031] like Figure 8 As shown, a strong spring 19 is fixedly connected to the side wall of the T-shaped slider 18, and the end of the strong spring 19 away from the T-shaped slider 18 is fixedly connected to the linkage housing 16. The strong spring 19 can realize the quick matching and contact of the L-shaped card block 17 with the output end of the permanent magnet stepper motor body 15, thereby improving the efficiency of the linkage structure installation.

[0032] Specifically, when using this permanent magnet stepper motor functional testing equipment: When installing the permanent magnet stepper motor body 15, a hollow conical guide (not shown in the figure) can be inserted into the center of the hollow housing 2. The outer wall of the conical guide simultaneously presses the inclined surfaces at the ends of multiple circumferentially distributed clamping rods 3, forcing all clamping rods 3 to move radially outward synchronously, thereby forming a receiving space in the center. Then, the permanent magnet stepper motor body 15 is placed into this space, and the conical guide is removed. The elastic restoring force of the strong tension spring 4 drives the clamping rods 3 to retract radially, so that the anti-slip extrusion head 6 is tightly attached to the outer wall of the motor body, achieving synchronous, fast and stable initial clamping. The anti-rotation strip 7 restricts the circumferential rotation of the clamping rods 3 to prevent the clamping from loosening. Rotate the knob A1 3. The adjusting screw A12 rotates, and the drive plate 11 drives the linkage frame 10 to move axially along the guide rod 8, so that multiple sets of circumferentially distributed limiting rods 14 are inserted into the limiting holes 5 corresponding to the clamping rod 3 and the cavity housing 2, locking the radial position of the clamping rod 3, adapting to motor bodies of different outer diameters and shapes, and completing the fixation; when the output end of the permanent magnet stepper motor body 15 is connected to the linkage fine-tuning concentric assembly, the L-shaped locking block 17 moves radially along the linkage housing 16 through the T-shaped slider 18 under the elastic action of the strong spring 19, and multiple sets of L-shaped locking blocks 17 with different inner walls perpendicular to the reference plane are elastically locked with the outer wall of the output end of the permanent magnet stepper motor body 15. At this time, the output end of the permanent magnet stepper motor body 15 and the adapted L-shaped Once the locking block 17 is matched and the fitting is complete, rotating the knob B24 drives the bidirectional screw 21 to rotate, driving the moving block 22 to slide along the transverse fine-tuning frame 20. The clamping block 23 clamps the corresponding protruding L-shaped locking block 17 to achieve clamping connection. When rotating, the strong spring 19 and the sliding transverse fine-tuning frame 20 work together to rotate the output end of the permanent magnet stepper motor body 15 and the linkage rod 25 to achieve adaptive fine-tuning, that is, adaptively correcting the coaxiality of the motor output end and the linkage rod 25. During functional testing, the permanent magnet stepper motor body 15 drives the linkage rod 25 to rotate around the bearing seat 27, the winding roller 34 rotates synchronously, the winding rope 41 winds or releases along the spiral groove 40, and the counterweight 42 provides the force required for testing. Simultaneously, the linkage rod 25 drives the driven gear ring 35 to rotate, meshing with the drive gear 37 to drive the adjusting screw B36 to rotate. The moving frame 38 drives the rope ring 39 to move axially synchronously, avoiding the overlapping and entanglement of the coiled rope 41. To prevent the moving frame 38 from rotating with the adjusting screw B36, a fixing rod (not shown in the figure) can be added to limit the direction of the moving frame 38. The fixing rod is slidably connected to the moving frame 38 and fixedly connected to the inner wall of the drying and protective box 29. When the drying and protective box 29 is working, the heating wire 31 heats the air, the electric fan 32 sends the hot air into the box, and the air guide plate 33 guides the airflow to be evenly distributed, quickly creating a dry test environment, preventing the coiled rope 41 from slipping due to moisture, and ensuring the stability of torque transmission.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A functional testing device for a permanent magnet stepper motor, comprising a support frame (1), characterized in that, Also includes: The cavity housing (2) is fixedly connected to the side wall of the support frame (1). The cavity housing (2) is connected to the permanent magnet stepper motor body (15) through the adapter clamping assembly set on the inner wall of the cavity housing (2). Side frame (26) is fixedly connected to the side wall of support frame (1), and a bearing seat (27) is fixedly connected to the top of the side frame (26). A linkage rod (25) is detachably connected to the inner wall of the bearing seat (27), and the linkage rod (25) is connected to the output end of the permanent magnet stepper motor body (15) through a linkage fine-tuning concentric component set at the end of the linkage rod (25) away from the bearing seat (27). The positioning frame (28) is fixedly connected to the side wall of the side frame (26), and the inner wall of the positioning frame (28) is fixedly connected to the drying and protective box (29). The adapter clamping assembly includes multiple clamping rods (3), a strong tension spring (4), and an anti-slip extrusion head (6). A limiting component is disposed on the side wall of the cavity shell (2), and the limiting component cooperates with the adapter clamping component; Anti-slip and anti-overlapping line assembly is installed on the outer wall of the linkage rod (25).

2. The functional testing equipment for a permanent magnet stepper motor according to claim 1, characterized in that, The limiting component includes Multiple sets of guide rods (8) are fixedly connected to the side wall of the cavity shell (2) and are distributed circumferentially about the cavity shell (2). The end of the guide rod (8) away from the cavity shell (2) is fixedly connected to a limit plate (9). Linkage frame (10) is slidably connected to the outer wall of guide rod (8), and a drive plate (11) is fixedly connected to the outer wall of the linkage frame (10). An adjustment screw A (12) is threadedly connected to the outer wall of the drive plate (11) and rotates with the cavity shell (2). A knob A (13) is fixedly connected to the end of the adjustment screw A (12) away from the cavity shell (2). Multiple sets of limit rods (14) are fixedly connected to the side wall of the linkage frame (10) and distributed in a circle along the linkage frame (10).

3. The functional testing equipment for a permanent magnet stepper motor according to claim 1, characterized in that, The linked fine-tuning concentric component includes: The linkage housing (16) is fixedly connected to the end of the linkage rod (25) away from the bearing seat (27); Multiple sets of L-shaped blocks (17) are slidably connected to the inner wall of the linkage housing (16) by multiple sets of T-shaped sliders (18) that are fixedly connected to the outer wall of the L-shaped blocks (17) and symmetrically distributed along the horizontal direction of the L-shaped blocks (17). The inner wall of the L-shaped blocks (17) abuts against the outer diameter of the output end of the permanent magnet stepper motor body (15).

4. The functional testing equipment for a permanent magnet stepper motor according to claim 1, characterized in that, The anti-slip and anti-overlapping line assembly includes: The winding roller (34) is fixedly connected to the outer wall of the linkage rod (25), and the outer wall of the winding roller (34) is fixedly connected to the driven toothed ring (35). A spiral groove (40) is formed on the outer wall of the winding roller (34). A winding rope (41) is provided on the inner wall of the spiral groove (40). One end of the winding rope (41) is fixedly connected to the inner wall of the spiral groove (40), and the other end is fixedly connected to a counterweight (42).

5. The functional testing equipment for a permanent magnet stepper motor according to claim 1, characterized in that, The bottom of the drying and protective box (29) is fixedly connected to an air inlet box (30), and a heating wire (31) is fixedly connected to the inner wall of the air inlet box (30). The inner wall of the air inlet box (30) is also fixedly connected to multiple sets of electric fans (32) that are linearly distributed along the air inlet box (30). The inner wall of the drying and protective box (29) is fixedly connected to multiple sets of air guide plates (33) that are symmetrically distributed about the vertical direction of the drying and protective box (29).

6. The functional testing equipment for a permanent magnet stepper motor according to claim 1, characterized in that, The inner wall of the drying and protective box (29) is rotatably connected to an adjusting screw B (36), and the outer wall of the adjusting screw B (36) is fixedly connected to a drive gear (37) that meshes with the driven gear ring (35). The outer wall of the adjusting screw B (36) is threadedly connected to a movable frame (38), and the side wall of the movable frame (38) is fixedly connected to a rope ring (39), and the rope ring (39) is sleeved on the outer wall of the coiled rope (41).

7. The functional testing equipment for a permanent magnet stepper motor according to claim 3, characterized in that, The inner wall of the linkage housing (16) is slidably connected to a transverse fine-tuning frame (20), and the inner wall of the transverse fine-tuning frame (20) is rotatably connected to a bidirectional screw (21). The outer wall of the bidirectional screw (21) is threaded with multiple sets of moving blocks (22) symmetrically distributed about the vertical direction of the bidirectional screw (21). The moving blocks (22) are slidably connected to the transverse fine-tuning frame (20). The side wall of the moving blocks (22) is fixedly connected to a clamping block (23), and the clamping block (23) abuts against the side wall of the L-shaped card block (17). The outer wall of the bidirectional screw (21) is fixedly connected to a knob B (24).

8. The functional testing equipment for a permanent magnet stepper motor according to claim 3, characterized in that, The outer walls of the multiple sets of L-shaped card blocks (17) are located on the same vertical reference plane, and the horizontal distance from the top of the inner wall of the multiple sets of L-shaped card blocks (17) to the vertical reference plane decreases sequentially.

9. The functional testing equipment for a permanent magnet stepper motor according to claim 4, characterized in that, Multiple sets of clamping rods (3) are slidably connected to the inner wall of the cavity shell (2) and are distributed circumferentially along the cavity shell (2). The clamping rods (3) and the outer wall of the cavity shell (2) are both provided with uniformly distributed limiting holes (5). A fixing plate (43) is fixedly connected to the outer wall of the clamping rods (3). A strong tension spring (4) is sleeved on the outer wall of the clamping rods (3). The strong tension spring (4) is fixedly connected between the inner wall of the cavity shell (2) and the side wall of the fixing plate (43). The anti-slip extrusion head (6) is fixedly connected to the end of the clamping rods (3) away from the cavity shell (2). Multiple sets of anti-rotation strips (7) are fixedly connected to the outer wall of the clamping rods (3) and are distributed circumferentially along the clamping rods (3). The anti-rotation strips (7) are slidably connected to the cavity shell (2).

10. A functional testing device for a permanent magnet stepper motor according to claim 3, characterized in that, A strong spring (19) is fixedly connected to the side wall of the T-shaped slider (18), and the end of the strong spring (19) away from the T-shaped slider (18) is fixedly connected to the linkage housing (16).

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