A function test device for a permanent magnet type stepping motor

Abstract

The application provides a permanent magnet type stepping motor function test device, and belongs to the technical field of motor control and test, and comprises a support frame, further comprises: a cavity shell fixedly connected to the side wall of the support frame, 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; a side frame fixedly connected to the side wall of the support frame, and a bearing seat fixedly connected to the top of the side frame, the inner wall of the bearing seat is detachably connected with a linkage rod, and the linkage rod is connected with the output end of the permanent magnet type stepping motor body through a linkage fine adjustment concentric assembly arranged at the end of the linkage rod away from the bearing seat; in the application, the adaptive clamping assembly is provided with a plurality of circumferentially distributed clamping rods matched with strong tension springs, and the adjustable limiting design of the limiting assembly can adapt to permanent magnet type stepping motors with different outer diameter sizes and shapes without replacing the fixed structure, thereby reducing the use cost.

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 test error of parameters such as torque and speed, affecting the test accuracy; 3. During the torque test, the rope is prone to sliding and stacking, resulting in 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, such as narrow adaptive range, frequent replacement of clamps, high cost, easy loosening and deviation during clamping, complex coaxiality correction operation, inconvenient disassembly, deviation easily causing test error, affecting accuracy, and torque test rope easily sliding and stacking, humid environment exacerbating slipping, lack of anti-skid and anti-winding dry protection, and low reliability.

[0008] In order to achieve the above purpose of the application, the present application provides the following technical solutions:

[0009] A permanent magnet stepping motor function test equipment, comprising a support frame, further comprising:

[0010] 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;

[0011] 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 at the end of the linkage rod away from the bearing seat;

[0012] 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;

[0013] The adaptive clamping assembly comprises a plurality of clamping rods, strong tension springs and anti-skid extrusion heads;

[0014] A limiting assembly is arranged on the side wall of the cavity shell, and the limiting assembly cooperates with the adaptive clamping assembly;

[0015] The anti-skid and anti-piling wire assembly is arranged on the outer wall of the linkage rod.

[0016] As a preferred technical scheme of the present application, the limiting assembly comprises

[0017] A plurality of guide rods are fixedly connected to the side wall of the cavity shell and are circumferentially distributed about the cavity shell. One end of the guide rod away from the cavity shell is fixedly connected to a limiting plate.

[0018] 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 which is rotationally connected with the cavity shell. One end of the adjusting screw A away from the cavity shell is fixedly connected with a knob A.

[0019] A plurality of limiting rods are fixedly connected to the side wall of the linkage frame and are circumferentially distributed along the linkage frame.

[0020] As a preferred technical scheme of the present application, the linkage fine-tuning concentric assembly comprises:

[0021] A linkage shell is fixedly connected to one end of the linkage rod away from the bearing seat.

[0022] 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. 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.

[0023] As a preferred technical scheme of the present application, the anti-skid and anti-piling wire assembly comprises:

[0024] 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.

[0025] A spiral groove is formed in the outer wall of the winding roller, and a winding rope is arranged in the inner wall of the spiral groove. 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.

[0026] As a preferred technical scheme of the present application, the dry protection box is fixedly connected with an air inlet box at the bottom. The inner wall of the air inlet box is fixedly connected with a heating wire. The inner wall of the air inlet box is also fixedly connected with a plurality of electric fans which are linearly distributed along the air inlet box. The inner wall of the dry protection box is fixedly connected with a plurality of air deflectors which are symmetrically distributed about the vertical direction of the dry protection box.

[0027] As a preferred technical scheme of the present application, the inner wall of the dry protection box is rotationally connected with an adjusting screw B. The outer wall of the adjusting screw B is fixedly connected with a driving gear which is in mesh 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 which is sleeved on the outer wall of the winding rope.

[0028] As a preferred technical solution of the present application, the inner wall of the linkage shell is slidingly connected with a transverse fine adjustment frame, the inner wall of the transverse fine adjustment frame is rotationally connected with a bidirectional screw rod, the outer wall of the bidirectional screw rod is threadedly connected with a plurality of moving blocks symmetrically distributed in the vertical direction of the bidirectional screw rod, and the moving blocks are slidingly connected with the transverse fine adjustment 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 rod is fixedly connected with a knob B.

[0029] As a preferred technical solution of the present application, the outer walls of a plurality of L-shaped clamping blocks are located on the same vertical reference plane, and the horizontal distances from the top ends of the inner walls of the plurality of L-shaped clamping blocks to the vertical reference plane decrease in turn.

[0030] As a preferred technical solution of the present application, a plurality of clamping rods are slidingly connected to the inner wall of the cavity shell and are circumferentially distributed along the cavity shell, the clamping rod and the outer wall of the cavity shell are both provided with uniformly distributed limiting holes, the outer wall of the clamping rod is fixedly connected with a fixed plate, the strong tension spring is sleeved on the outer wall of the clamping rod, the strong tension spring is fixedly connected between the inner wall of the cavity shell and the side wall of the fixed plate, the anti-skid extrusion head is fixedly connected to one end of the clamping rod away from the cavity shell, the outer wall of the clamping rod is fixedly connected with a plurality of anti-rotation strips circumferentially distributed along the clamping rod, and the anti-rotation strips are slidingly connected with the cavity shell.

[0031] As a preferred technical solution of the present application, the side wall of the T-shaped sliding block is fixedly connected with a strong spring, and one end of the strong spring away from the T-shaped sliding block is fixedly connected with the linkage shell.

[0032] Compared with the prior art, the present application has the following advantages:

[0033] 1. By setting the adaptive clamping assembly with a plurality of circumferentially distributed clamping rods cooperating with a strong tension spring, and combining with the adjustable limiting design of the limiting assembly, different outer diameter sizes and shapes of the permanent magnet stepping motor can be adapted without replacing the fixed structure, reducing the use cost, and at the same time, the full-enclosure clamping cooperation of the anti-rotation strip and the anti-skid extrusion head effectively limits the circumferential rotation and axial loosening of the motor, ensures the constant position of the motor during testing, lays a foundation for the accuracy of test data, and solves the problems of narrow adaptation range of the stepping motor clamping structure in the prior art, frequent replacement of clamps, high cost, and loose clamping and offset leading to distorted test data;

[0034] 2. The L-shaped clamping block of the motor output end outer diameter is elastically clamped by setting the linkage fine-tuning concentric assembly of multiple groups of different vertical reference planes, cooperating with the radial fine-tuning structure of the transverse fine-tuning frame, which can quickly complete the coaxiality correction of the motor output end and the linkage rod, reduce the torque, rotation speed and other parameter test errors caused by coaxiality deviation, significantly improve the accuracy of test data, at the same time, the combination design of T-shaped slider and clamping block takes into account the dual needs of quick disassembly and stable clamping, improves the test efficiency, solves the problems of complex coaxiality correction operation and inconvenient disassembly in the prior art, deviation easily causes test error and affects accuracy;

[0035] 3. In the anti-skid and anti-winding assembly, the spiral groove guides the orderly winding of the rope, and the rope ring and the winding roller move synchronously in the axial direction, avoiding the problems of rope sliding and stacking, ensuring the accuracy, stability and repeatability of torque transmission, at the same time, the dry protection box quickly removes the moisture in the test environment through the synergistic effect of heating wire, electric fan and air deflector, avoids the rope from being wet and slippery, further improves the reliability and practicality of the detection mechanism, solves the problems of easy sliding and stacking of the torque test winding rope, wetness aggravating the sliding, lack of anti-skid and anti-winding and dry protection, low reliability in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is one of the overall schematic diagrams of the present application;

[0037] Figure 2 It is a front view of the present application;

[0038] Figure 3 It is a side view of the present application;

[0039] Figure 4 It is the second overall schematic diagram of the present application;

[0040] Figure 5 It is a schematic diagram of the internal structure of the cavity shell of the present application;

[0041] Figure 6 It is a schematic diagram of the guide rod part structure of the present application;

[0042] Figure 7 It is a schematic diagram of the limit plate part structure of the present application;

[0043] Figure 8 It is a sectional view of the linkage shell of the present application;

[0044] Figure 9 It is a schematic diagram of the transverse fine-tuning frame part structure of the present application;

[0045] Figure 10 It is a sectional view of the dry protection box of the present application;

[0046] Figure 11The schematic view of the structure of the winding roller part of the application.

[0047] In the figure: 1, support frame; 2, cavity shell; 3, clamping rod; 4, strong tension spring; 5, limiting hole; 6, anti-skid extrusion head; 7, anti-rotation strip; 8, guide rod; 9, limiting plate; 10, linkage frame; 11, driving plate; 12, adjusting screw A; 13, knob A; 14, limiting rod; 15, permanent magnet type stepping motor body; 16, linkage shell; 17, L-shaped clamping block; 18, T-shaped sliding block; 19, strong spring; 20, transverse fine adjustment frame; 21, bidirectional screw rod; 22, moving block; 23, clamping block; 24, knob B; 25, linkage rod; 26, side frame; 27, bearing seat; 28, positioning frame; 29, drying protection box; 30, air inlet box; 31, heating wire; 32, electric fan; 33, air deflector; 34, winding roller; 35, driven gear ring; 36, adjusting screw B; 37, driving gear; 38, moving frame; 39, rope ring; 40, helical groove; 41, winding rope; 42, counterweight device; 43, fixed plate. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0049] Please refer to Figures 1-11 The application provides a permanent magnet type stepping motor function test device, which comprises a support frame 1 and further comprises:

[0050] A cavity shell 2 is fixedly connected to the side wall of the support frame 1, and the cavity shell 2 is connected with the permanent magnet type stepping motor body 15 through an adaptive clamping assembly arranged on the inner wall of the cavity shell 2.

[0051] A side frame 26 is fixedly connected to the side wall of the support frame 1, and the top of the side frame 26 is fixedly connected with a bearing seat 27, and the inner wall of the bearing seat 27 is detachably connected with a linkage rod 25, and the linkage rod 25 is connected with the output end of the permanent magnet type stepping motor body 15 through a linkage fine adjustment concentric assembly arranged at the end of the linkage rod 25 away from the bearing seat 27.

[0052] A 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 with a drying protection box 29.

[0053] The adaptive clamping assembly comprises:

[0054] Multiple sets of clamping rods 3 are slidingly 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. The outer wall of the clamping rod 3 is fixedly connected with a fixed plate 43.

[0055] A strong tension spring 4 is sleeved on the outer wall of the clamping rod 3. The strong tension spring 4 is fixedly connected between the inner wall of the cavity shell 2 and the side wall of the fixed plate 43.

[0056] A non-slip extrusion head 6 is fixedly connected to the end of the clamping rod 3 away from the cavity shell 2. When installing the permanent magnet stepping motor body 15, a hollow conical guide body (not shown in the figure) can be inserted into the center of the cavity shell 2. The conical outer wall simultaneously extrudes the inclined surface of the multiple sets of circumferentially distributed clamping rod 3 ends, forcing all clamping rods 3 to move radially outward synchronously, thereby forming an accommodation space in the center. Then the permanent magnet stepping motor body 15 is placed in the space, the conical guide body is removed, and the elastic restoring force of the strong tension spring 4 drives the clamping rod 3 to contract radially, so that the non-slip extrusion head 6 tightly fits the outer wall of the motor body, realizing synchronous, rapid and stable preliminary clamping. The anti-rotation strip 7 limits the circumferential rotation of the clamping rod 3, avoiding loosening of the clamping;

[0057] A limiting assembly is arranged on the side wall of the cavity shell 2, and the limiting assembly cooperates with the adaptive clamping assembly.

[0058] A non-slip and anti-winding assembly is arranged on the outer wall of the linkage rod 25.

[0059] As shown in Figure 7 , the limiting assembly comprises

[0060] Multiple sets of guide rods 8 are fixedly connected to the side wall of the cavity shell 2 and are circumferentially distributed about the cavity shell 2. The end of the guide rod 8 away from the cavity shell 2 is fixedly connected with a limiting plate 9.

[0061] A linkage frame 10 is slidingly connected to the outer wall of the guide rod 8. The outer wall of the linkage frame 10 is fixedly connected with a driving plate 11. The outer wall of the driving plate 11 is threadedly connected with an adjusting screw A12 which is rotationally connected with the cavity shell 2. The end of the adjusting screw A12 away from the cavity shell 2 is fixedly connected with a knob A13.

[0062] Multiple sets of limiting rods 14 are fixedly connected to the side wall of the linkage frame 10 and are circumferentially distributed along the linkage frame 10. Rotating the knob A13 drives the adjusting screw A12 to rotate, and the driving 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 shell 2, locking the radial position of the clamping rod 3, adapting to different outer diameter sizes and shapes of the motor body, and completing the fixation.

[0063] As shown in Figure 8 , the linkage fine-tuning concentric assembly comprises:

[0064] Linkage housing 16, fixedly connected to the end of the linkage rod 25 away from the bearing seat 27;

[0065] Multiple sets of L-shaped clamping blocks 17 are slidably connected to the inner wall of the linkage housing 16 through multiple sets of T-shaped sliding blocks 18 fixedly connected to the outer wall of the L-shaped clamping block 17 and symmetrically distributed along the horizontal direction of the L-shaped clamping block 17. The inner wall of the L-shaped clamping block 17 abuts against the outer diameter of the output end of the permanent magnet stepping motor body 15. When the output end of the permanent magnet stepping motor body 15 is butted against the linkage fine adjustment concentric assembly, the L-shaped clamping block 17 moves radially along the linkage housing 16 under the elastic action of the strong spring 19 through the T-shaped sliding block 18. Multiple sets of L-shaped clamping blocks 17 with different inner wall vertical reference planes are elastically clamped with the outer wall of the output end of the permanent magnet stepping motor body 15. At this time, the output end of the permanent magnet stepping motor body 15 is matched with the adapted L-shaped clamping block 17.

[0066] As shown in Figures 1-3 , the anti-skid and anti-stacking wire assembly comprises:

[0067] 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 with the driven gear ring 35.

[0068] The spiral groove 40 is provided on the outer wall of the winding roller 34, and the winding rope 41 is arranged 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 with the counterweight 42. During functional testing, the permanent magnet stepping 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 is wound or released along the trajectory of the spiral groove 40, and the counterweight 42 provides the required torque for testing.

[0069] As shown in Figure 10 , the bottom of the drying protection box 29 is fixedly connected with the air inlet box 30, the inner wall of the air inlet box 30 is fixedly connected with the heating wire 31, and the inner wall of the air inlet box 30 is further fixedly connected with multiple sets of electric fans 32 linearly distributed along the air inlet box 30. The inner wall of the drying protection box 29 is fixedly connected with multiple sets of air deflectors 33 symmetrically distributed in the vertical direction of the drying protection box 29. When the drying protection box 29 is working, the heating wire 31 heats the air, the electric fan 32 sends the hot air flow into the box, and the air deflector 33 guides the airflow to be uniformly distributed, quickly creates a dry test environment, prevents the winding rope 41 from sliding due to moisture, and ensures the stability of torque transmission.

[0070] As shown in Figures 10-11As shown, the inner wall of the dry protection box 29 is rotatably connected with an adjusting screw B36, the outer wall of the adjusting screw B36 is fixedly connected with a driving gear 37 which is in mesh with the driven gear ring 35, the outer wall of the adjusting screw B36 is threadedly connected with a moving frame 38, the side wall of the moving frame 38 is fixedly connected with a rope ring 39 which is sleeved on the outer wall of the winding rope 41, the linkage rod 25 drives the driven gear ring 35 to rotate, and the driving gear 37 meshes with the driving adjusting screw B36 to rotate, the moving frame 38 drives the rope ring 39 to move axially synchronously, avoiding the winding rope 41 from being stacked and wound, in order to avoid the moving frame 38 from rotating with the adjusting screw B36, a fixed rod (not marked in the figure) can be added to limit the direction of the moving frame 38, and the fixed rod is slidably connected with the moving frame 38 and fixedly connected with the inner wall of the dry protection box 29.

[0071] As shown in the figure, Figure 9 The inner wall of the linkage shell 16 is slidably connected with a transverse fine adjustment frame 20, the inner wall of the transverse fine adjustment frame 20 is rotatably connected with a bidirectional screw 21, the outer wall of the bidirectional screw 21 is threadedly connected with a plurality of moving blocks 22 which are symmetrically distributed about the vertical direction of the bidirectional screw 21, and the moving blocks 22 are slidably connected with the transverse fine adjustment frame 20, the side wall of the moving block 22 is fixedly connected with a clamping block 23 which abuts against the side wall of the L-shaped clamping block 17, the outer wall of the bidirectional screw 21 is fixedly connected with a knob B24, rotating the knob B24 drives the bidirectional screw 21 to rotate, drives the moving block 22 to slide along the transverse fine adjustment frame 20, and the clamping block 23 clamps the corresponding protruding L-shaped clamping block 17 to realize clamping connection, when rotating, the strong spring 19 cooperates with the slidable transverse fine adjustment frame 20 to make the output end of the permanent magnet stepping motor body 15 and the linkage rod 25 rotate at an angle to realize self-adaptive fine adjustment, i.e. self-adaptive correction of the coaxiality of the motor output end and the linkage rod 25.

[0072] As shown in the figure, Figure 9 The outer walls of the plurality of L-shaped clamping blocks 17 are located on the same vertical reference plane, the horizontal distances from the inner walls of the plurality of L-shaped clamping blocks 17 to the vertical reference plane decrease in turn, and the L-shaped clamping blocks 17 with decreasing horizontal distances from the inner walls to the vertical reference plane can be adapted to the output end diameters of permanent magnet stepping motor bodies 15 of different diameters, improving the adaptability of the linkage structure.

[0073] As shown in the figure, Figure 7 The outer wall of the clamping rod 3 is fixedly connected with a plurality of anti-rotation strips 7 which are circumferentially distributed along the clamping rod 3 and are slidably connected with the cavity shell 2, the anti-rotation strips 7 limit the circumferential rotation of the clamping rod 3 to avoid loosening.

[0074] As shown in the figure, Figure 8As shown, the T-shaped slider 18 is fixedly connected with a strong spring 19, and the strong spring 19 is fixedly connected with the linkage shell 16 away from the T-shaped slider 18, and through the strong spring 19, the L-shaped clamping block 17 can be quickly matched and attached to the output end of the permanent magnet type stepping motor body 15, thereby improving the installation efficiency of the linkage structure.

[0075] Specifically, the permanent magnet type stepping motor function test equipment in use: when installing the permanent magnet type stepping motor body 15, a hollow tapered guide body (not shown in the figure) can be inserted into the center of the cavity shell 2, the tapered outer wall simultaneously extrudes the inclined surface of the end of the plurality of circumferentially distributed clamping rods 3, forcing all clamping rods 3 to move radially outward synchronously, thereby forming a containing space in the center, then the permanent magnet type stepping motor body 15 is placed in the space, the tapered guide body is removed, and the elastic restoring force of the strong tension spring 4 drives the clamping rod 3 to contract radially, so that the anti-skid extrusion head 6 is tightly attached to the outer wall of the motor body, realizing synchronous, fast and stable preliminary clamping, the anti-rotation strip 7 limits the circumferential rotation of the clamping rod 3, avoiding loose clamping; rotating the knob A13 drives the adjusting screw A12 to rotate, the driving plate 11 drives the linkage frame 10 to move axially along the guide rod 8, so that the plurality of circumferentially distributed limiting rods 14 are inserted into the limiting hole 5 corresponding to the clamping rod 3 and the cavity shell 2, locking the radial position of the clamping rod 3, adapting to different outer diameter sizes and shapes of the motor body, and completing the fixation; when the output end of the permanent magnet type stepping motor body 15 is connected with the linkage fine tuning concentric assembly, the L-shaped block 17 moves radially along the linkage shell 16 under the elastic action of the strong spring 19, and the plurality of L-shaped blocks 17 with different inner wall perpendicular reference planes are elastically clamped with the outer wall of the output end of the permanent magnet type stepping motor body 15, at this time the output end of the permanent magnet type stepping motor body 15 is matched with the adapted L-shaped block 17, after the adaptation is completed, 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 block 17 to realize clamping connection, when rotating, the strong spring 19 and the slidable transverse fine tuning frame 20 cooperate to make the output end of the permanent magnet type stepping motor body 15 rotate and the angle of the linkage rod 25 to realize self-adaptive fine tuning, that is, self-adaptive correction of the coaxiality of the motor output end and the linkage rod 25; during function test, the permanent magnet type stepping 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 is wound or released along the spiral groove 40 track, the counterweight device 42 provides the required torque for test, at the same time, the linkage rod 25 drives the driven gear ring 35 to rotate, engages with the driving 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 winding rope 41 to be wound in layers, a fixed rod (not marked in the figure) can be added to limit the direction of the moving frame 38, and the fixed rod is connected with the moving frame 38 in sliding mode and is fixedly connected with the inner wall of the dry protection box 29; when the dry protection box 29 works, the heating wire 31 heats the air, the electric fan 32 sends the hot air flow into the box, and the air deflector 33 guides the airflow to be evenly distributed, quickly creating a dry test environment, preventing the winding rope 41 from sliding due to moisture, and ensuring the stability of torque transmission.

[0076] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A permanent magnet type stepping motor function test apparatus comprising a support frame (1), characterized in that, Also includes: The cavity shell (2) is fixedly connected to the side wall of the support frame (1), and the cavity shell (2) is connected with the permanent magnet type stepping motor body (15) through the adaptive clamping assembly arranged on the inner wall of the cavity shell (2); The side frame (26) is fixedly connected to the side wall of the support frame (1), and the top of the side frame (26) is fixedly connected with the bearing seat (27), the inner wall of the bearing seat (27) is detachably connected with the linkage rod (25), and the linkage rod (25) is connected with the output end of the permanent magnet type stepping motor body (15) through the linkage fine adjustment concentric assembly arranged on 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 with the dry protection box (29); The adaptive clamping assembly comprises a plurality of clamping rods (3), strong tension springs (4) and anti-skid extrusion heads (6); The limiting assembly is arranged on the side wall of the cavity shell (2), and the limiting assembly and the adaptive clamping assembly are matched with each other; The anti-skid and anti-overlapping wire assembly is arranged on the outer wall of the linkage rod (25); The limiting assembly comprises A plurality of guide rods (8) are fixedly connected to the side wall of the cavity shell (2) and are circumferentially distributed about the cavity shell (2), and the end of the guide rod (8) away from the cavity shell (2) is fixedly connected with a limiting plate (9); The linkage frame (10) is slidingly connected to the outer wall of the guide rod (8), and the outer wall of the linkage frame (10) is fixedly connected with a driving plate (11), the outer wall of the driving plate (11) is threadedly connected with an adjusting screw A (12) which is rotationally connected with the cavity shell (2), and the end of the adjusting screw A (12) away from the cavity shell (2) is fixedly connected with a knob A (13); A plurality of limiting rods (14) are fixedly connected to the side wall of the linkage frame (10) and are circumferentially distributed along the linkage frame (10); The linkage fine adjustment concentric assembly comprises: The linkage shell (16) is fixedly connected to the end of the linkage rod (25) away from the bearing seat (27); A plurality of L-shaped clamping blocks (17) are slidingly connected to the inner wall of the linkage shell (16) through a plurality of T-shaped sliding blocks (18) fixedly connected to the outer wall of the L-shaped clamping block (17) and symmetrically distributed along the horizontal direction of the L-shaped clamping block (17), and the inner wall of the L-shaped clamping block (17) abuts against the outer diameter of the output end of the permanent magnet type stepping motor body (15); The anti-skid and anti-overlapping wire assembly comprises: 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 with a driven gear ring (35); The spiral groove (40) is arranged on the outer wall of the winding roller (34), the spiral groove (40) is provided with a winding rope (41), 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 with a counterweight (42).

2. The permanent magnet type stepping motor function test apparatus according to claim 1, wherein The bottom of the dry protection box (29) is fixedly connected with an air inlet box (30), the inner wall of the air inlet box (30) is fixedly connected with heating wires (31), the inner wall of the air inlet box (30) is also fixedly connected with a plurality of electric fans (32) which are linearly distributed along the air inlet box (30), and the inner wall of the dry protection box (29) is fixedly connected with a plurality of air deflectors (33) which are symmetrically distributed in the vertical direction of the dry protection box (29).

3. The permanent magnet type stepping motor function test apparatus according to claim 1, wherein The inner wall of the dry protection box (29) is rotatably connected with an adjusting screw B (36), the outer wall of the adjusting screw B (36) is fixedly connected with a driving gear (37) which is in mesh with a driven gear ring (35), the outer wall of the adjusting screw B (36) is threadedly connected with a moving frame (38), the side wall of the moving frame (38) is fixedly connected with a rope ring (39), and the rope ring (39) is sleeved on the outer wall of a winding rope (41).

4. The permanent magnet type stepping motor function test apparatus according to claim 3, wherein The inner wall of the linkage shell (16) is slidably connected with a transverse fine adjustment frame (20), the inner wall of the transverse fine adjustment frame (20) is rotatably connected with a bidirectional screw (21), the outer wall of the bidirectional screw (21) is threadedly connected with a plurality of moving blocks (22) which are symmetrically distributed in the vertical direction of the bidirectional screw (21), the moving blocks (22) are slidably connected with the transverse fine adjustment frame (20), the side wall of the moving blocks (22) is fixedly connected with clamping blocks (23), the clamping blocks (23) abut against the side wall of the L-shaped clamping block (17), and the outer wall of the bidirectional screw (21) is fixedly connected with a knob B (24).

5. The permanent magnet type stepping motor function test apparatus according to claim 3, wherein The outer walls of a plurality of the L-shaped clamping blocks (17) are located on the same vertical reference plane, and the horizontal distances from the top ends of the inner walls of a plurality of the L-shaped clamping blocks (17) to the vertical reference plane decrease in turn.

6. The permanent magnet type stepping motor function test apparatus according to claim 4, wherein A plurality of the clamping rods (3) are slidably connected to the inner wall of the cavity shell (2) and are circumferentially distributed 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 rod (3) is fixedly connected with a fixed plate (43), the strong tension spring (4) is sleeved on the outer wall of the clamping rod (3), the strong tension spring (4) is fixedly connected between the inner wall of the cavity shell (2) and the side wall of the fixed plate (43), the anti-slip extrusion head (6) is fixedly connected to the end of the clamping rod (3) away from the cavity shell (2), the outer wall of the clamping rod (3) is fixedly connected with a plurality of anti-rotation strips (7) which are circumferentially distributed along the clamping rod (3), and the anti-rotation strips (7) are slidably connected with the cavity shell (2).

7. The permanent magnet type stepping motor function test apparatus according to claim 3, wherein The side wall of the T-shaped sliding block (18) is fixedly connected with a strong spring (19), and one end of the strong spring (19) away from the T-shaped sliding block (18) is fixedly connected with the linkage shell (16).

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