Stepping motor preparation test system and test process

Abstract

The invention relates to the technical field of motor testing, in particular to a stepping motor preparation testing system and technology, and the system comprises a horizontal plate and a vertical plate which are perpendicular to each other, a fixing device, and a loading device. According to the invention, the following problems existing in the load test process of the motor in the prior art can be solved: manual operation of a tester is needed, the load borne by the test motor cannot be kept at a specified size, and the test precision is influenced; a load test result of a test motor cannot be recorded or displayed to a tester, so that an accurate test result cannot be obtained; according to the invention, the output shaft of the motor to be tested drives the loading wheel to rotate to simulate load operation, and the load force does not change randomly, so that the test precision is ensured; according to the invention, the rotating speed of the output shaft of the to-be-tested motor during non-load operation and load operation can be detected and displayed, and whether the load test is qualified can be judged by comparing the rotating speed of the output shaft of the to-be-tested motor under the load condition with the preset rotating speed.

Description

Technical Field

[0001] The present invention relates to the technical field of motor testing, and in particular to a stepping motor preparation and testing system and a testing process. Background Art

[0002] A stepper motor is an electric motor that converts electrical pulse signals into corresponding angular displacement or linear displacement. In order to ensure the normal use of the stepper motor, a number of tests are required, including insulation withstand voltage test, resistance test, rotation direction verification, temperature rise and noise test, torque detection, output shaft mechanical strength and load test; among them, the load test is to set a variety of different load conditions such as no load, light load, rated load and overload on the stepper motor output shaft to test the stability of the stepper motor output shaft under load. Load test is a key step in evaluating whether the stepper motor can have stability and reliability in the actual working environment.

[0003] In the prior art, a large number of motor tests and corresponding devices are also disclosed. For a more accurate comparison, a Chinese patent with publication number CN109738800A discloses a motor load test tool, including a tool base, a test motor mounting seat and a vertically arranged connecting column are provided on the tool base, a test motor is placed on the test motor mounting seat, a test motor is provided with a vertically upwardly arranged test motor output shaft, a test motor driven shaft bearing mounting seat and a brake assembly are provided on the connecting column through a moving assembly, the test motor driven shaft bearing mounting seat is connected to the test motor driven shaft through a bearing, and the brake assembly is connected to the test motor driven shaft.

[0004] When the above-mentioned prior art is in use, the test motor is connected to the power supply, so that the test motor output shaft on the test motor rotates, and the test motor output shaft drives the test motor driven shaft and the bicycle brake disc to rotate through the output shaft connecting device, and then the brake line tensioning screw is pulled to tighten the brake line, so that the brake caliper brakes the bicycle brake disc and increases the operating load current of the test motor; loosening the brake line tensioning screw can loosen the bicycle brake disc and reduce the operating load current of the test motor. The adjustment process is flexible and changeable, which effectively optimizes the test working conditions.

[0005] However, in the process of using the above-mentioned prior art to perform load testing on the motor, there are still the following shortcomings:

[0006] 1. Although the above-mentioned prior art performs load testing on the test motor by tightening or loosening the bicycle brake disc through the brake assembly, the tester is required to manually tighten the brake line screw to tighten or loosen the brake line. However, during manual operation, the load on the test motor cannot be maintained at a specified size, resulting in the operating load of the test motor being easily changed, thereby affecting the test effect and test accuracy.

[0007] 2. When the test motor is loaded only by the bicycle brake disc, the load test result of the test motor cannot be recorded or displayed to the tester in a manner that is easy to observe, resulting in an inability to obtain accurate test results, which further affects the load accuracy of the test motor.

[0008] Therefore, based on the above-stated viewpoints, there is still room for improvement in the motor load testing methods of the prior art. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a stepper motor preparation and testing system, including a stabilizing frame, which is composed of a horizontal plate and a vertical plate that are perpendicular to each other. The vertical plate is provided with a through hole for passing the output shaft of the motor to be tested, and a fixing device for limiting and fixing the motor to be tested is installed between the vertical plate and the horizontal plate. The fixing device includes a rectangular sleeve arranged on the side of the vertical plate close to the horizontal plate, and a plurality of clamping pads abutting against the outer wall of the motor to be tested are installed on the rectangular sleeve.

[0010] A loading device for applying a load to the output shaft of the motor to be tested is arranged on one side of the vertical plate away from the horizontal plate. The loading device comprises a loading wheel rotatably arranged on the side wall of the vertical plate.

[0011] As a preferred technical solution of the present invention, the fixing device also includes a threaded rod, and the threaded rod is penetrated through the middle part of the four side walls of the rectangular sleeve by means of threaded connection. A clamping pad is provided at one end of the threaded rod close to the inside of the rectangular sleeve, and a supporting spring is installed between the clamping pad and the inner wall of the rectangular sleeve, a linkage unit is provided between the threaded rod and the rectangular sleeve, and the fixing device also includes a supporting unit installed on the horizontal plate.

[0012] As a preferred technical solution of the present invention, the linkage unit includes a plurality of first pulleys which are rotatably arranged on the four side walls of the rectangular sleeve and sleeved on the outside of the threaded rod through a limiting rotating drum. The first pulleys are slidably connected to the threaded rod. Two positioning shafts are symmetrically installed along the four side walls of the rectangular sleeve for rotation. The second pulley is sleeved on the positioning shaft. The first pulley and the second pulley on each side wall of the rectangular sleeve are connected together through a belt drive. A bevel gear is also sleeved on the positioning shaft, and two adjacent bevel gears at the corner of the rectangular sleeve are meshed.

[0013] As a preferred technical solution of the present invention, the outer wall of the threaded rod is symmetrically provided with two limiting sliding grooves parallel to its axis, and the inner wall of the first pulley is equipped with an auxiliary sliding block slidably docked in the limiting sliding groove.

[0014] As a preferred technical solution of the present invention, the supporting unit includes a positioning block installed on the upper end of the horizontal plate, and two guide grooves are symmetrically provided on the upper end of the positioning block along the width direction. A pushing plate is slidably docked inside the two guide grooves for squeezing and fixing the side of the motor to be tested away from the vertical plate, a protective pad is installed on the side of the pushing plate close to the vertical plate, and a contraction spring is installed between the pushing plate and a side wall of the guide groove close to the vertical plate.

[0015] As a preferred technical solution of the present invention, the pushing plate is provided with a plurality of connecting holes corresponding to the positions of the threaded rods, an auxiliary plate is slidably arranged in the connecting holes, a top-contact spring rod is installed on the side of the auxiliary plate and the connecting holes away from the protective pad, and a supporting splint is arranged on the side of the auxiliary plate close to the vertical plate.

[0016] As a preferred technical solution of the present invention, the loading device also includes a speed measuring instrument installed on the side of the vertical plate away from the horizontal plate, a display screen electrically connected to the speed measuring instrument is arranged on the upper end of the vertical plate, an annular frame with a diameter larger than the through hole is installed on the side of the vertical plate away from the horizontal plate, a notch for accommodating the speed measuring instrument is opened at the upper end of the annular frame, an annular connecting plate is arranged on the side of the annular frame away from the vertical plate through an annular rotating drum, the loading wheel is sleeved on the outer wall of the annular connecting plate, and an abutment unit abutting against the output shaft of the motor to be tested is installed on the annular connecting plate.

[0017] As a preferred technical solution of the present invention, the abutment unit includes an actuator rod, a plurality of annularly distributed slots evenly opened inside the annular connecting plate and connected to the inner side thereof, an actuator rod is slidably connected inside the slot, an arc-shaped pressing plate is arranged on one side of the actuator rod close to the axis of the annular connecting plate, a plurality of flexible rollers are equidistantly arranged on the inner side wall of the arc-shaped pressing plate along its length direction, and a plurality of anti-slip strips evenly distributed circumferentially along its axis are arranged on the inner side wall of the arc-shaped pressing plate.

[0018] As a preferred technical solution of the present invention, the abutment unit further comprises a control block installed on the side of the actuator rod away from the annular drum, the control block extends to the outside after passing through the slot, an annular control plate is rotatably arranged on the side of the annular connecting plate away from the annular drum, and mutually meshing vortex threads are commonly arranged on the opposite sides of the plurality of control blocks and the annular control plate;

[0019] An annular fixing plate is rotatably arranged between the annular control plate and the loading wheel. A plurality of annularly distributed positioning seats are evenly arranged on one side of the annular fixing plate away from the annular connecting plate. A control handle which is rotatably connected to the side wall of the annular control plate and is clamped with the positioning seat.

[0020] In addition, the present invention also provides a stepper motor preparation and testing process, comprising the following steps:

[0021] S1: Motor placement and fixation: First, place the motor to be tested on a horizontal plate, and then use a fixing device to limit and fix the motor to be tested accordingly;

[0022] S2: Motor start: Connect the power to the motor to be tested and start it;

[0023] S3: Motor test: Apply load to the output shaft of the motor to be tested through the loading device to simulate the load operation of the motor to be tested in the actual working process, and test its operation stability under load;

[0024] S4: Remove the motor: After the test is completed, the loading device is disengaged from the output shaft of the motor to be tested, and then the limit of the fixing device on the motor to be tested is released, and then the motor to be tested after the test is completed is removed.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The present invention can limit and fix the motor to be tested by abutting against the side walls of the motor to be tested on all sides through multiple clamping pads, thereby ensuring the stability of the motor to be tested during the test, preventing the motor to be tested from shaking randomly and causing vibration when its output shaft rotates, thereby affecting the test accuracy, and ensuring the normal operation of the test.

[0027] 2. The present invention can ensure that multiple threaded rods can be controlled to rotate synchronously by rotating any one threaded rod through the cooperation between the first pulley, the second pulley and the bevel gear, so that the multiple threaded rods drive the clamping pads to clamp and fix the motor to be tested in multiple directions at the same time, and the motor to be tested is located at the center of the inner side of the rectangular sleeve, so that the output shaft of the motor to be tested and the through hole maintain the same axis, thereby improving the accuracy of the load test on the output shaft of the motor to be tested.

[0028] 3. The present invention uses a pushing plate to squeeze and fix the motor to be tested, and uses a plurality of supporting clamps against the side walls of the motor to be tested and a clamping pad to limit and fix the motor to be tested in all directions, thereby further ensuring the stability of the motor to be tested during the test and avoiding random shaking that affects the test results.

[0029] 4. The present invention detects the rotation speed of the output shaft of the motor to be tested under no-load operation and loaded operation conditions through a rotation speed measuring instrument, and compares the rotation speed of the output shaft of the motor to be tested under load conditions with a preset rotation speed to determine whether its load test is qualified; during the load test, a connection relationship between the annular connecting plate and the output shaft of the motor to be tested can be quickly established, so that the output shaft of the motor to be tested drives the annular connecting plate and the loading wheel to rotate through the arc-shaped clamping plate, thereby simulating the load operation of the output shaft of the motor to be tested, so as to facilitate load testing of the motor to be tested, and the load force of the output shaft of the motor to be tested will not change arbitrarily, thereby ensuring the test accuracy.

[0030] 5. The present invention can control two groups of diagonal arc speed brakes of the vertical plate to be pressed against the outer wall of the loading wheel by rotating the control wheel in cooperation with the elastic pull rope and the bending rod, so as to realize the load applied to the output shaft of the motor to be tested by increasing the rotational resistance of the loading wheel, thereby simulating the operation of the output shaft of the motor to be tested under the initial load condition, and by controlling one group of arc speed brakes or two groups to be pressed against the loading wheel, the load force applied to the loading wheel can be adjusted, so as to facilitate load testing of the output shaft of the motor to be tested under different load conditions, and facilitate adaptive adjustment according to actual test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 It is a structural schematic diagram of the present invention.

[0033] Figure 2 It is a schematic structural diagram of the fixing device of the present invention.

[0034] Figure 3 The present invention Figure 2 A partial enlarged view of point A.

[0035] Figure 4 The present invention Figure 2 A partial enlarged view of point B.

[0036] Figure 5 It is a structural schematic diagram of the supporting unit of the present invention.

[0037] Figure 6 It is a structural schematic diagram of the loading device of the present invention.

[0038] Figure 7 The present invention Figure 6 A partial enlarged view of point C.

[0039] Figure 8 The present invention Figure 6 A partial enlarged view of point D.

[0040] Fig. 9 It is a schematic diagram of the exploded structure between the annular connecting plate and the annular control plate of the present invention.

[0041] Fig.10 It is a schematic diagram of the structure between the vertical plate, the loading wheel and the amplification device of the present invention.

[0042] Fig.11 The present invention Fig.10 A partial enlarged view of point E.

[0043] Fig.12 It is a working state diagram between the loading wheel and the amplification device of the present invention.

[0044] Fig.13 The present invention Fig.12 A partial enlarged view of point F.

[0045] In the figure, 1, horizontal plate; 2, vertical plate; 3, fixing device; 31, rectangular sleeve; 32, clamping pad; 33, threaded rod; 331, limiting slide groove; 34, supporting spring; 35, linkage unit; 351, first pulley; 352, positioning shaft; 353, second pulley; 354, bevel gear; 355, auxiliary slider; 36, supporting unit; 361, positioning block; 362, guide slide groove; 363, pushing plate; 364, protective pad; 365, contraction spring; 366, connecting hole; 367, auxiliary plate; 368, top contact spring rod; 369, supporting clamp; 4, loading device; 41, loading wheel; 42, speed measurement Instrument; 43, display screen; 44, annular frame; 45, annular drum; 46, annular connecting plate; 47, abutment unit; 471, actuator rod; 472, arc-shaped abutment plate; 473, flexible roller; 474, anti-slip strip; 475, control block; 476, annular control plate; 477, annular fixing plate; 478, positioning card seat; 479, control handle; 5, amplifier device; 51, fixing plate; 52, arc-shaped deceleration plate; 53, positioning strip; 54, bending rod; 55, torsion spring; 56, limiting baffle; 57, first reel; 58, control reel; 59, winding wheel; 60, elastic pulley; 61, second reel; 7, motor to be tested. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-Figure 13 Embodiments of the present invention are described in detail.

[0047] The embodiment of the present application discloses a stepper motor preparation and testing system, which explains that the stepper motor preparation and testing system is mainly used in the process of load testing the motor 7 to be tested. In terms of technical effect, the motor 7 to be tested can be fixed in all directions to ensure its stability under heavy test, and avoid the motor 7 to be tested shaking randomly, which causes vibration when its output shaft rotates and affects the test accuracy. It is then powered on and started, during which a load is applied to the output shaft of the motor 7 to be tested to simulate the load operation of the output shaft of the motor 7 to be tested, thereby performing a load test on the motor 7 to be tested. Furthermore, the stepper motor preparation and testing system can also determine whether its load test is qualified by comparing the speed of the motor 7 to be tested under load with the preset speed, and can apply different load forces to the output shaft of the motor 7 to be tested, so as to facilitate load testing of the output shaft of the motor 7 to be tested under different load conditions.

[0048] Embodiment 1:

[0049] Reference Figure 1 and Figure 2As shown, a stepper motor preparation and testing system includes a stabilizing frame, which is composed of a horizontal plate 1 and a vertical plate 2 which are perpendicular to each other. The vertical plate 2 is provided with a through hole for passing the output shaft of the motor 7 to be tested. A fixing device 3 for limiting and fixing the motor 7 to be tested is installed between the vertical plate 2 and the horizontal plate 1. The fixing device 3 includes a rectangular sleeve 31 arranged on the side of the vertical plate 2 close to the horizontal plate 1, and a plurality of clamping pads 32 abutting against the outer wall of the motor 7 to be tested are installed on the rectangular sleeve 31.

[0050] Furthermore, in this embodiment, a loading device 4 for applying a load to the output shaft of the motor 7 to be tested is provided on a side of the vertical plate 2 away from the horizontal plate 1 . The loading device 4 includes a loading wheel 41 rotatably provided on the side wall of the vertical plate 2 .

[0051] In the specific implementation process, the motor 7 to be tested is first placed on the horizontal plate 1, and then the motor 7 to be tested is fixed with corresponding limit by the fixing device 3 to ensure its stability during the test. Then the motor 7 to be tested is powered on and started, and a load is applied to the output shaft of the motor 7 to be tested by the loading device 4, thereby simulating the load operation of the motor 7 to be tested in the actual working process, so as to test its stability of operation under load; after the test is completed, the loading device 4 is detached from the output shaft of the motor 7 to be tested, and then the limit of the motor 7 to be tested by the fixing device 3 is released, so as to remove the tested motor 7 and perform a load test on the next motor 7 to be tested.

[0052] Reference Figure 2 and Figure 3 As shown, in order to ensure the test accuracy, the motor 7 to be tested needs to be kept in a fixed state during the test, so the motor 7 to be tested needs to be fixed in a corresponding limited position. Based on this, a fixing device 3 is provided in this embodiment. Specifically, the fixing device 3 also includes a threaded rod 33. The middle parts of the four side walls of the rectangular sleeve 31 are all penetrated by threaded connections with the threaded rod 33. A clamping pad 32 is provided at one end of the threaded rod 33 close to the inside of the rectangular sleeve 31, and a supporting spring 34 is installed between the clamping pad 32 and the inner wall of the rectangular sleeve 31. A linkage unit 35 is provided between the threaded rod 33 and the rectangular sleeve 31, and the fixing device 3 also includes a supporting unit 36 ​​installed on the horizontal plate 1.

[0053] It should be noted that the side wall of the clamping pad 32 slides against the vertical plate 2, thereby limiting the clamping pad 32. When the threaded rod 33 is rotated to control the movement of the clamping pad 32, the clamping pad 32 can only move along the axial direction of the threaded rod 33 and cannot rotate.

[0054] During the specific implementation process, the side of the motor 7 to be tested provided with the output shaft is placed on the inner side of the rectangular sleeve 31, and then the threaded rod 33 is rotated. While the threaded rod 33 rotates, it drives the clamping pad 32 to move toward the side close to the motor 7 to be tested, so that multiple clamping pads 32 are respectively abutted against the side walls around the motor 7 to be tested, so as to achieve the limit fixation of the motor 7 to be tested, thereby ensuring the stability of the motor 7 to be tested during the test, avoiding the motor 7 to be tested from shaking randomly, causing vibration when its output shaft rotates, and affecting the test accuracy, and can ensure the normal operation of the test.

[0055] In this embodiment, the support spring 34 always applies a driving force to the clamping pad 32 directed to the inside of the rectangular sleeve 31, so that the threaded rod 33 is affected by the driving force and increases the thread friction between the threaded rod 33 and the rectangular sleeve 31, thereby realizing self-locking of the threaded rod 33 and preventing the threaded rod 33 from rotating at will and affecting the contact force between the clamping pad 32 and the motor 7 to be tested.

[0056] Reference Figure 3 and Figure 4 As shown, in order to quickly fix the motor 7 to be tested and make the output shaft of the motor 7 to be tested maintain the same axis as the through hole, it is necessary to control multiple threaded rods 33 to rotate simultaneously and control the four clamping pads 32 on the rectangular sleeve 31 to squeeze toward the outer wall of the motor 7 to be tested at the same time. Based on this, a linkage unit 35 is provided in this embodiment. Specifically, the linkage unit 35 includes multiple first pulleys 351 that are rotatably arranged on the four side walls of the rectangular sleeve 31 through a limiting rotating cylinder and are sleeved on the outside of the threaded rod 33. The first pulley 351 is slidably connected to the threaded rod 33. Two positioning shafts 352 are symmetrically installed on the four side walls of the rectangular sleeve 31 along the first pulley 351. The positioning shaft 352 is sleeved with a second pulley 353. The first pulley 351 and the second pulley 353 on each side wall of the rectangular sleeve 31 are connected together by belt transmission. A bevel gear 354 is also sleeved on the positioning shaft 352, and two adjacent bevel gears 354 at the corner of the rectangular sleeve 31 are meshed.

[0057] In the specific implementation process, when any threaded rod 33 is rotated, the threaded rod 33 drives the first pulley 351 on its outer wall to rotate, and the first pulley 351 drives the two second pulleys 353 connected to its belt drive to rotate, and the second pulley 353 drives the positioning shaft 352 and the bevel gear 354 to rotate, so that the bevel gear 354 drives the positioning shaft 352, the second pulley 353, the first pulley 351 and the threaded rod 33 on the other side to rotate through the bevel gear 354 meshing with it, so that any one of the threaded rods 33 can be rotated. Multiple threaded rods 33 can be rotated synchronously, so that the multiple threaded rods 33 simultaneously drive the clamping pads 32 to move close to the inner side of the rectangular sleeve 31, and the moving speeds and moving distances of the multiple clamping pads 32 are equal, so that the motor 7 to be tested can be clamped and fixed in multiple directions at the same time, and when the multiple clamping pads 32 abut against the outer wall of the motor 7 to be tested, the motor 7 to be tested is at the center of the inner side of the rectangular sleeve 31, so that the output shaft of the motor 7 to be tested maintains the same axis as the through hole, thereby improving the accuracy of the load test on the output shaft of the motor 7 to be tested.

[0058] It should be noted that two limiting grooves 331 parallel to its axis are symmetrically provided on the outer wall of the threaded rod 33, and an auxiliary slider 355 slidably docked in the limiting groove 331 is installed on the inner wall of the first pulley 351; through the cooperation between the auxiliary slider 355 and the limiting groove 331, the first pulley 351 can drive the threaded rod 33 to rotate, and the threaded rod 33 will not be affected when it reciprocates along its axis, thereby realizing that the first pulley 351 controls the rotation of the threaded rod 33 and drives the clamping pad 32 to abut against the outer wall of the motor 7 to be tested.

[0059] After the test is completed, the threaded rod 33 is rotated in the reverse direction, and the threaded rod 33 drives the clamping pad 32 to move to a side away from the motor 7 to be tested and reset, thereby releasing the fixing effect on the motor 7 to be tested, so as to facilitate its removal.

[0060] Reference Figure 5As shown, since the motor 7 to be tested is prone to overall vibration during operation, it is impossible to completely fix it by only clamping the side close to the output shaft. In order to further ensure the stability of the motor 7 to be tested, a supporting unit 36 ​​is also provided in this embodiment, which is used to limit and fix the side of the motor 7 to be tested away from the output shaft. Specifically, the supporting unit 36 ​​includes a positioning block 361 installed at the upper end of the horizontal plate 1, and the upper end of the positioning block 361 is symmetrically provided with two guide grooves 362 along the width direction. The two guide grooves 362 are internally The common sliding docking is used to squeeze and fix the side of the motor 7 to be tested away from the vertical plate 2 with a pushing plate 363, a protective pad 364 is installed on the side of the pushing plate 363 close to the vertical plate 2, and a contraction spring 365 is installed between the pushing plate 363 and the side wall of the guide groove 362 close to the vertical plate 2; the contraction spring 365 always applies a pulling force to the pushing plate 363, so that the pushing plate 363 always has a tendency to move toward the side close to the vertical plate 2, and the distance between the pushing plate 363 and the vertical plate 2 is the smallest in the initial state.

[0061] Furthermore, in this embodiment, a plurality of connecting holes 366 corresponding to the positions of the threaded rods 33 are provided on the pushing plate 363, and an auxiliary plate 367 is slidably arranged in the connecting hole 366. A top-contact spring rod 368 is installed on the side of the auxiliary plate 367 and the connecting hole 366 away from the protective pad 364, and a supporting splint 369 is provided on the side of the auxiliary plate 367 close to the vertical plate 2; the top-contact spring rod 368 always applies a top-contact force to the auxiliary plate 367, so that the auxiliary plate 367 has a tendency to drive the supporting splint 369 to move toward the side close to the protective pad 364.

[0062] It should be noted that the supporting clamp 369 and the clamping pad 32 are positioned correspondingly, and guide plates inclined outward are installed on the opposite sides of the supporting clamp 369 and the clamping pad 32; through the setting of the guide plate, when the motor 7 to be tested is placed between the vertical plate 2 and the pushing plate 363, it is convenient to quickly place it between multiple clamping pads 32 and multiple supporting clamps 369, thereby speeding up the fixing speed of the motor 7 to be tested.

[0063] In the specific implementation process, before placing the motor 7 to be tested, the pushing plate 363 is pushed to the side away from the vertical plate 2, so that the distance between the pushing plate 363 and the vertical plate 2 is increased and the motor 7 to be tested can be placed in it; after the side of the motor 7 to be tested provided with the output shaft is clamped and fixed by the clamping pad 32, the pushing plate 363 is released, and the pushing plate 363 drives the protective pad 364 to press against the side of the motor 7 to be tested away from the vertical plate 2 under the action of the contraction spring 365, so that the side of the motor 7 to be tested provided with the output shaft presses against the side wall of the vertical plate 2, which can squeeze and fix the motor 7 to be tested; then the supporting clamping plate 369 presses against the surrounding side walls of the motor 7 to be tested under the action of the top contact spring rod 368, so that the clamping pad 32 can cooperate with the two sides of the motor 7 to be tested to perform all-round limit fixation, further ensuring the stability of the motor 7 to be tested during the test process, and avoiding arbitrary shaking and affecting the test results.

[0064] After the test is completed, the clamping pad 32 is released from the fixing effect of the motor 7 to be tested, and the motor 7 to be tested is fixed between multiple protective pads 364. Then the pushing plate 363 is pushed to the side away from the vertical plate 2, and then the motor 7 to be tested placed between the multiple protective pads 364 can be removed.

[0065] Reference Figure 6 As shown, in order to facilitate the load test of the motor 7 to be tested, it is necessary to apply a load to its output shaft and test whether the speed of the output shaft is affected under loads of different sizes. Based on this, a loading device 4 is provided in this embodiment. Specifically, the loading device 4 also includes a speed measuring instrument 42 installed on the side of the vertical plate 2 away from the horizontal plate 1, and a display screen 43 electrically connected to the speed measuring instrument 42 is provided on the upper end of the vertical plate 2. An annular frame 44 with a diameter larger than the through hole is installed on the side of the vertical plate 2 away from the horizontal plate 1, and a notch for accommodating the speed measuring instrument 42 is opened on the upper end of the annular frame 44. An annular connecting plate 46 is provided on the side of the annular frame 44 away from the vertical plate 2 through an annular rotating drum 45. The loading wheel 41 is sleeved on the outer wall of the annular connecting plate 46, and a contact unit 47 abutting against the output shaft of the motor 7 to be tested is installed on the annular connecting plate 46.

[0066] In this embodiment, the speed measuring instrument 42 is an instrument used in the prior art to measure the speed of the motor shaft. In this application, it is used to measure the speed of the output shaft of the motor 7 to be tested, and its working principle will not be repeated here.

[0067] In the specific implementation process, after the motor 7 to be tested is fixed, its output shaft passes through the through hole and extends to the inner side of the annular connecting plate 46. At this time, the motor 7 to be tested is powered on and operated, so that the output shaft of the motor 7 to be tested rotates under no-load conditions, and then the speed measuring instrument 42 is used to detect the speed of the output shaft at this time and record it on the display screen 43; then the motor 7 to be tested is suspended, and a connection relationship between the annular connecting plate 46 and the output shaft of the motor 7 to be tested is established through the abutment unit 47, so that when the motor 7 to be tested is running, the annular connecting plate 46 and the loading wheel 41 are driven by its output shaft to rotate as a whole, and applying a load to the output shaft of the motor 7 to be tested by the loading wheel 41 can simulate the load operation of the output shaft during actual use. At this time, the speed measuring instrument 42 is used to detect the speed of the output shaft and record it on the display screen 43; the tester can view the speed of the output shaft under no-load operation and load operation on the display screen 43. If the speed of the output shaft under load is higher than the preset speed, the load test of the motor 7 to be tested is qualified, otherwise it is unqualified.

[0068] It should be noted that the outer wall of the annular frame 44 is rotatably provided with balls for reducing the friction between the annular drum 45, thereby preventing the output shaft of the motor 7 to be tested from being affected by the friction when driving the annular connecting plate 46 and the loading wheel 41 to rotate, thereby improving the test accuracy.

[0069] Reference Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in order to facilitate the rapid establishment of the connection relationship between the annular connecting plate 46 and the output shaft of the motor 7 to be tested, a contact unit 47 is further provided in the present embodiment. Specifically, the contact unit 47 includes an actuator rod 471, and a plurality of annular slots evenly distributed inside the annular connecting plate 46 and connected to the inner side thereof are evenly opened, and an actuator rod 471 is slidably connected inside the slot, and an arc-shaped contact plate 472 is provided on one side of the actuator rod 471 close to the axis of the annular connecting plate 46, and a plurality of flexible rollers 473 are equidistantly provided on the inner side wall of the arc-shaped contact plate 472 along its length direction, and a plurality of anti-slip strips 474 evenly distributed circumferentially along its axis are provided on the inner side wall of the arc-shaped contact plate 472.

[0070] Furthermore, in this embodiment, the abutment unit 47 also includes a control block 475 installed on the side of the actuator rod 471 away from the annular rotating drum 45, and the control block 475 extends to the outside after passing through the slot. An annular control plate 476 is rotatably provided on the side of the annular connecting plate 46 away from the annular rotating drum 45, and the opposite sides of the multiple control blocks 475 and the annular control plate 476 are jointly provided with mutually meshing spiral threads.

[0071] Furthermore, in this embodiment, an annular fixing plate 477 is rotatably arranged between the annular control plate 476 and the loading wheel 41, and a plurality of annularly distributed positioning sockets 478 are evenly arranged on one side of the annular fixing plate 477 away from the annular connecting plate 46, and a control handle 479 rotatably connected to the side wall of the annular control plate 476 and engaged with the positioning socket 478.

[0072] During the specific implementation process, the annular control plate 476 is driven to rotate by the control handle 479, and the annular control plate 476 drives multiple control blocks 475 and the actuator rod 471 to move as a whole toward the side close to the output shaft of the motor 7 to be tested through the spiral thread, so that multiple actuator rods 471 simultaneously drive the arc-shaped clamping plate 472 to press against the outer wall of the output shaft of the motor 7 to be tested, which is easy to operate. Subsequently, the control handle 479 is clamped in the positioning seat 478 at its corresponding position to limit the annular control plate 476 to prevent the annular control plate 476 from rotating at will, thereby preventing the actuator rod 471 and the arc-shaped clamping plate 472 from moving at will and failing to close to the output shaft of the motor 7 to be tested, thereby affecting the test effect.

[0073] By setting the arc-shaped clamping plate 472 and the anti-slip strip 474, the friction force between the output shaft of the motor 7 to be tested can be increased, so as to establish a connection relationship between the output shaft of the motor 7 to be tested and the annular connecting plate 46, so that the output shaft of the motor 7 to be tested can drive the annular connecting plate 46 and the loading wheel 41 to rotate through the arc-shaped clamping plate 472, and the rotation direction of the flexible roller 473 is arranged perpendicular to the rotation direction of the output shaft of the motor 7 to be tested, so as to further increase the friction force between the output shaft of the motor 7 to be tested, so as to ensure that the annular connecting plate 46 rotates synchronously with the output shaft of the motor 7 to be tested, so as to facilitate the annular connecting plate 46 to apply a load to the output shaft of the motor 7 to be tested through the loading wheel 41, thereby simulating the load operation of the output shaft of the motor 7 to be tested.

[0074] After the test is completed, the control handle 479 is used to drive the annular control plate 476 to rotate in the opposite direction, so that it cooperates with the control block 475 to drive the actuator rod 471 and the arc-shaped clamping plate 472 to move and reset as a whole to the side away from the output shaft of the motor 7 to be tested, so as to facilitate the removal of the motor 7 to be tested after the test is completed.

[0075] Embodiment 2:

[0076] Reference Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, on the basis of Example 1, since the motor 7 to be tested needs to operate under different load conditions during actual use, in order to further simulate the load test of the motor 7 to be tested, an amplifier device 5 for applying different force loads to the output shaft of the motor 7 to be tested is provided in this embodiment to test whether the speed of the output shaft of the motor 7 to be tested is qualified under different load conditions. Specifically, the amplifier device 5 includes a fixed plate 51 arranged at the four corners of the side of the vertical plate 2 away from the horizontal plate 1, and the side of the fixed plate 51 away from the vertical plate 2 is hinged with an arc-shaped deceleration plate 52, the inner diameter of the arc-shaped deceleration plate 52 is equal to the outer diameter of the loading wheel 41, and the inner wall of the arc-shaped deceleration plate 52 is installed with a plurality of positioning strips 53 for increasing friction.

[0077] Furthermore, in this embodiment, a bending rod 54 is hinged between the outer wall of the arc-shaped deceleration plate 52 and the vertical plate 2. The bending rod 54 consists of two sections that can be bent. The two sections of the bending rod 54 are hinged by a torsion spring 55, and a limiting baffle 56 is provided on one side of the bending rod 54 away from the fixed plate 51; the torsion spring 55 always applies a torsional force to the bending rod 54, so that the two sections of the bending rod 54 remain in a bent state in the initial state, and the bending rod 54 drives the arc-shaped deceleration plate 52 to tilt outward without contacting the loading wheel 41 (in Fig.12 and Fig.13 ).

[0078] Furthermore, a plurality of first wire wheels 57 corresponding to the position of the fixed plate 51 and a control wire wheel 58 located below the loading wheel 41 are rotatably provided on the side of the vertical plate 2 away from the horizontal plate 1. The first wire wheel 57 is located on the side of the fixed plate 51 away from the bending rod 54. Two winding wheels 59 are symmetrically provided between the two sections of the bending rod 54 along its width direction. An elastic pull rope 60 is wound around the outer wall of the winding wheel 59. One end of the elastic pull rope 60 away from the winding wheel 59 passes through the fixed plate 51, bypasses the first wire wheel 57, and then is wound around the control wire wheel 58. The side wall of the vertical plate 2 is also rotatably provided with a plurality of second wire wheels 61 for guiding the two elastic pull ropes 60 above it. The second wire wheels 61 can enable the elastic pull rope 60 to bypass the fixed plate 51 and the bending rod 54 below the vertical plate 2.

[0079] It should be noted that the length of the elastic pull ropes 60 at any two diagonal points on the vertical plate 2 is smaller than the length of the elastic pull ropes 60 at the other two diagonal points, and the elastic pull ropes 60 can be elastically deformed when subjected to force.

[0080] During the specific implementation process, when the control wheel 58 is rotated, the two elastic pull ropes 60 with smaller lengths first pull the winding wheel 59 at its end toward the side close to the loading wheel 41, so that the angle between the two sections of the bending rod 54 on the winding wheel 59 gradually increases, and increases to 180° at the maximum under the action of the limiting baffle 56, so that the two diagonal bending rods 54 squeeze the arc-shaped deceleration plate 52 at their ends, so that it drives the positioning bar 53 to be close to the outer wall of the loading wheel 41, and then the load applied to the output shaft of the motor 7 to be tested is achieved by increasing the rotational resistance of the loading wheel 41. At this time, it is used to apply a preliminary load force to the loading wheel 41, and at this time, the operation of the output shaft of the motor 7 to be tested under the preliminary load condition is simulated.

[0081] Then, the control wheel 58 continues to be rotated, and the smaller elastic rope 60 is adaptively stretched under the action of its own elasticity, while the two larger elastic ropes 60 cooperate with the winding wheel 59 and the bending rod 54 to press the other two diagonal arc-shaped speed reducers 52 against the outer wall of the loading wheel 41, so as to further increase the load force applied to the loading wheel 41, and then increase the load applied to the output shaft of the motor 7 to be tested, so as to facilitate load testing of the output shaft of the motor 7 to be tested under different load conditions, and can be adaptively adjusted according to actual test requirements.

[0082] In addition, controlling the two arc-shaped deceleration plates 52 at the diagonals of the vertical plate 2 to abut against the loading wheel 41 each time can improve the stability of the loading wheel 41 during rotation, and avoid the lack of balance in the unidirectional force on the output shaft of the motor 7 to be tested, which affects the test accuracy.

[0083] In addition, the present invention also provides a stepper motor preparation and testing process, comprising the following steps:

[0084] S1: Motor placement and fixation: First, push the pushing plate 363 away from the vertical plate 2, so that the distance between the pushing plate 363 and the vertical plate 2 increases and the motor 7 to be tested can be placed. Secondly, place the side of the motor 7 to be tested with the output shaft on the inner side of the rectangular sleeve 31, and then rotate the threaded rod 33. The threaded rod 33 drives multiple clamping pads 32 to simultaneously abut against the side wall of the motor 7 to be tested and clamp it in multiple directions, and ensure that the motor 7 to be tested is at the center of the inner side of the rectangular sleeve 31, so that the output shaft of the motor 7 to be tested and the through hole maintain the same axis.

[0085] Release the pushing plate 363. Under the action of the contraction spring 365, the pushing plate 363 drives the protective pad 364 to press against the side of the motor 7 to be tested away from the vertical plate 2 and squeeze it to fix it. Then, the supporting clamp 369 presses against the side walls of the motor 7 to be tested to cooperate with the clamping pad 32 to perform all-round limiting and fixing on both sides of the motor 7 to be tested, so as to ensure the stability of the motor 7 to be tested during the test and avoid arbitrary shaking that affects the test results.

[0086] S2: Motor start: The motor 7 to be tested is powered on and started, so that its output shaft rotates without load. The speed of the output shaft is then detected by the speed measuring instrument 42 and recorded on the display screen 43. The motor 7 to be tested is then turned off.

[0087] S3: Motor test: The annular control plate 476 is driven to rotate by controlling the handle 479, and the annular control plate 476 drives the multiple control blocks 475 and the actuator rod 471 to move as a whole toward the side close to the output shaft of the motor 7 to be tested, so that the multiple actuator rods 471 simultaneously drive the arc-shaped clamping plate 472 to press against the outer wall of the output shaft of the motor 7 to be tested, and the friction force between the output shaft of the motor 7 to be tested and the output shaft can be increased by the arc-shaped clamping plate 472 and the anti-slip strip 474, so as to establish a connection relationship between the output shaft of the motor 7 to be tested and the annular connecting plate 46, so that the output shaft of the motor 7 to be tested can drive the annular connecting plate 46 and the loading wheel 41 to rotate through the arc-shaped clamping plate 472, so that the annular connecting plate 46 can apply a load to the output shaft of the motor 7 to be tested through the loading wheel 41, thereby simulating the load operation of the output shaft of the motor 7 to be tested.

[0088] At this time, the motor 7 to be tested is powered on again and operated. Applying a load to the output shaft of the motor 7 to be tested through the loading wheel 41 can simulate the load operation of the output shaft during actual use. At this time, the speed measuring instrument 42 detects the speed of the output shaft and records it on the display screen 43; the tester can view the speed of the output shaft under no-load operation and loaded operation on the display screen 43. If the speed of the output shaft under load is higher than the preset speed, the load test of the motor 7 to be tested is qualified, otherwise it is unqualified.

[0089] In addition, the present application also provides an amplifier device 5 for further increasing the load of the output shaft of the motor 7 to be tested, and its working principle is as follows: rotating the control wheel 58 cooperates with the elastic pull rope 60, the winding wheel 59 and the bending rod 54 to make any one group of diagonal or two groups of diagonal arc speed reduction plates 52 of the vertical plate 2 stick to the outer wall of the loading wheel 41, and the arc speed reduction plates 52 and the loading wheel 41 generate friction, and the load applied to the output shaft of the motor 7 to be tested is achieved by increasing the rotational resistance of the loading wheel 41, so as to facilitate the load test of the output shaft of the motor 7 to be tested under different load conditions, and can be adaptively adjusted according to actual test requirements.

[0090] S4: Remove the motor: After the test is completed, the control handle 479 is used to drive the annular control plate 476 to rotate in the opposite direction, so that it cooperates with the control block 475 to drive the actuator rod 471 and the arc-shaped clamping plate 472 to move and reset as a whole to the side away from the output shaft of the motor 7 to be tested, and then the threaded rod 33 is rotated in the opposite direction and the clamping pad 32 is driven to move and reset to the side away from the motor 7 to be tested, thereby releasing the fixing effect of the motor 7 to be tested; at this time, the motor 7 to be tested is fixed between multiple protective pads 364, and then the pushing plate 363 is pushed to the side away from the vertical plate 2, and then the motor 7 to be tested placed between the multiple protective pads 364 can be removed; repeating the above steps can realize continuous load testing of multiple motors 7 to be tested.

[0091] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0092] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A stepper motor preparation and testing system, comprising a stabilizing frame, the stabilizing frame consisting of a horizontal plate (1) and a vertical plate (2) perpendicular to each other, characterized in that: The vertical plate (2) is provided with a through hole for passing the output shaft of the motor (7) to be tested. A fixing device (3) for limiting and fixing the motor (7) to be tested is installed between the vertical plate (2) and the horizontal plate (1). The fixing device (3) comprises a rectangular sleeve (31) arranged on a side of the vertical plate (2) close to the horizontal plate (1). A plurality of clamping pads (32) abutting against the outer wall of the motor (7) to be tested are installed on the rectangular sleeve (31), wherein: A loading device (4) for applying a load to the output shaft of the motor (7) to be tested is provided on a side of the vertical plate (2) away from the horizontal plate (1), and the loading device (4) comprises a loading wheel (41) rotatably provided on the side wall of the vertical plate (2).

2. A stepper motor preparation and testing system according to claim 1, characterized in that: The fixing device (3) further comprises a threaded rod (33), the threaded rod (33) being threadedly connected through the middle of the four side walls of the rectangular sleeve (31), a clamping pad (32) being arranged at one end of the threaded rod (33) close to the inside of the rectangular sleeve (31), a supporting spring (34) being installed between the clamping pad (32) and the inner side wall of the rectangular sleeve (31), a linkage unit (35) being arranged between the threaded rod (33) and the rectangular sleeve (31), and the fixing device (3) further comprises a supporting unit (36) installed on the horizontal plate (1).

3. A stepper motor preparation and testing system according to claim 2, characterized in that: The linkage unit (35) comprises a plurality of first pulleys (351) which are rotatably arranged on the four side walls of the rectangular sleeve (31) and sleeved on the outside of the threaded rod (33) through a limiting rotating cylinder. The first pulleys (351) are slidably connected to the threaded rod (33). Two positioning shafts (352) are symmetrically rotatably arranged on the four side walls of the rectangular sleeve (31) along the first pulleys (351). The positioning shafts (352) are sleeved with second pulleys (353). The first pulleys (351) and the second pulleys (353) on each side wall of the rectangular sleeve (31) are connected to each other through a belt transmission. The positioning shafts (352) are also sleeved with bevel gears (354). Two adjacent bevel gears (354) at the corners of the rectangular sleeve (31) are meshed with each other.

4. A stepper motor preparation and testing system according to claim 3, characterized in that: The outer wall of the threaded rod (33) is symmetrically provided with two limiting sliding grooves (331) parallel to its axis, and the inner wall of the first pulley (351) is provided with an auxiliary sliding block (355) slidably docked in the limiting sliding groove (331).

5. A stepper motor preparation and testing system according to claim 2, characterized in that: The supporting unit (36) comprises a positioning block (361) mounted on the upper end of the horizontal plate (1); two guide slots (362) are symmetrically provided on the upper end of the positioning block (361) along the width direction; a pushing plate (363) is slidably docked inside the two guide slots (362) for squeezing and fixing the motor (7) to be tested away from the vertical plate (2); a protective pad (364) is installed on the side of the pushing plate (363) close to the vertical plate (2); and a contraction spring (365) is installed between the pushing plate (363) and a side wall of the guide slot (362) close to the vertical plate (2).

6. A stepper motor preparation and testing system according to claim 5, characterized in that: The pushing plate (363) is provided with a plurality of connecting holes (366) corresponding to the positions of the threaded rods (33), an auxiliary plate (367) is slidably arranged in the connecting holes (366), a top contact spring rod (368) is installed on the side of the auxiliary plate (367) and the connecting holes (366) away from the protective pad (364), and a supporting clamping plate (369) is arranged on the side of the auxiliary plate (367) close to the vertical plate (2).

7. A stepper motor preparation and testing system according to claim 1, characterized in that: The loading device (4) further comprises a rotation speed measuring instrument (42) mounted on a side of the vertical plate (2) away from the horizontal plate (1); a display screen (43) electrically connected to the rotation speed measuring instrument (42) is arranged on the upper end of the vertical plate (2); an annular frame (44) having a diameter larger than the through hole is mounted on the side of the vertical plate (2) away from the horizontal plate (1); a notch for accommodating the rotation speed measuring instrument (42) is provided on the upper end of the annular frame (44); an annular connecting plate (46) is arranged on the side of the annular frame (44) away from the vertical plate (2) via an annular rotating drum (45); a loading wheel (41) is sleeved on the outer wall of the annular connecting plate (46); and a contact unit (47) abutting against an output shaft of the motor (7) to be tested is mounted on the annular connecting plate (46).

8. A stepper motor preparation and testing system according to claim 7, characterized in that: The abutment unit (47) comprises an actuator rod (471), a plurality of slots evenly distributed in an annular manner and connected to the inner side of the annular connecting plate (46), the actuator rod (471) being slidably connected to the slots, an arc-shaped abutment plate (472) being arranged on one side of the actuator rod (471) close to the axis of the annular connecting plate (46), a plurality of flexible rollers (473) being equidistantly arranged on the inner side wall of the arc-shaped abutment plate (472) along its length direction, and a plurality of anti-slip strips (474) evenly distributed circumferentially along its axis are arranged on the inner side wall of the arc-shaped abutment plate (472).

9. A stepper motor preparation and testing system according to claim 8, characterized in that: The abutment unit (47) further comprises a control block (475) installed on a side of the actuator rod (471) away from the annular rotating drum (45); the control block (475) extends to the outside after passing through the slot; an annular control plate (476) is rotatably provided on a side of the annular connecting plate (46) away from the annular rotating drum (45); mutually meshing vortex threads are commonly provided on opposite sides of the plurality of control blocks (475) and the annular control plate (476); An annular fixing plate (477) is rotatably arranged between the annular control plate (476) and the loading wheel (41); a plurality of annularly distributed positioning seats (478) are evenly arranged on one side of the annular fixing plate (477) away from the annular connecting plate (46); and a control handle (479) is rotatably connected to the side wall of the annular control plate (476) and is clamped to the positioning seat (478).

10. A stepper motor preparation and testing process, comprising a stepper motor preparation and testing system as claimed in any one of claims 1 to 9, characterized in that: The testing process includes the following steps: S1: placing and fixing the motor: firstly, placing the motor to be tested (7) on the horizontal plate (1), and then fixing the motor to be tested (7) with a fixing device (3); S2: Motor start: connect the power supply to the motor to be tested (7) and start it; S3: Motor test: applying a load to the output shaft of the motor to be tested (7) through the loading device (4), simulating the load operation of the motor to be tested (7) in the actual working process, and testing the stability of its operation under load; S4: Removing the motor: After the test is completed, the loading device (4) is disengaged from the output shaft of the motor to be tested (7), and then the limit of the motor to be tested (7) by the fixing device (3) is released, and then the motor to be tested (7) after the test is completed is removed.

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