Motor load performance detection equipment and method

Abstract

The invention discloses a motor load performance detection device and method, and relates to the technical field of motor detection. To solve efficiency problems; the device specifically comprises a load detection part and a station switching part, the station switching part comprises a supporting disc supported on the ground through supporting legs and two sets of fixing assemblies arranged at the top of the supporting disc, and the load detection part comprises a variable load supported on the ground through a supporting box and a quick connector used for being in input fit with a to-be-detected motor. A torque sensor and a rotating speed sensor are arranged between the quick connector and the input end of the variable load; a linear guide groove and an arc-shaped guide groove are formed in the upper surface of the supporting disc. According to the invention, two groups of fixing assemblies are arranged, so that when one group is in a detection process, a worker can dismount and mount a to-be-detected motor on the other group at the same time, thereby realizing time overall planning in working procedures, and improving the efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of motor detection, and in particular to a motor load performance detection device and method. Background Art

[0002] Before the motor is calibrated and shipped out of the factory, it needs to be load tested. Specifically, the damping is used to provide a load to the output shaft of the motor, and then the motor is started to test its electrical parameters and output performance of torque and speed.

[0003] After searching, the Chinese patent publication number CN212008858U discloses a motor load detection device, including a base plate, on which a positioning mechanism for limiting the position of the motor to be tested and a load detection mechanism for performing load detection on the motor to be tested are provided, the load detection mechanism is located at the front side of the positioning mechanism, the positioning mechanism includes a movable plate slidably mounted on the base plate along the front-to-back direction, a positioning block fixedly connected to the movable plate and limiting the left-right movement of the motor to be tested, and a rotating cylinder located on one side of the positioning block, the output shaft of the rotating cylinder is vertically arranged, the upper end of the output shaft is fixedly connected to a laterally arranged connecting block, the end of the connecting block deviating from the output shaft is provided with a first fixing hole opening vertically downward, the inner surface of the first fixing hole and the outer surface of the pressing block are provided with a threaded structure that cooperates with each other.

[0004] The above patent has the following shortcomings: it requires the work of motor fixing-detection-motor unloading to be carried out in sequence, and it is impossible to realize the cross-processing of multiple processes at the same time, which makes the detection efficiency low.

[0005] To this end, the present invention provides a motor load performance detection device and method. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a motor load performance detection device and method.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A motor load performance detection device comprises a load detection unit and a station switching unit.

[0009] The station switching part includes a support plate supported on the ground by support legs and two sets of fixing components arranged on the top of the support plate, the load detection part includes a variable load supported on the ground by a support box and a quick connector for matching with the input of the motor to be tested, and a torque sensor and a speed sensor are arranged between the quick connector and the input end of the variable load;

[0010] The upper surface of the support plate is provided with a linear guide groove and an arc guide groove;

[0011] The fixing assembly includes a mounting frame for mounting the motor to be tested and a guide assembly that is movably limited and matched with the linear guide groove and the arc guide groove, the guide assembly includes roller one, roller two, and roller three that are rollingly matched with the inner wall of the linear guide groove and the arc guide groove, the top of the roller one and the roller two are rotatably connected to the same push frame two, the top of the roller two and the roller three are rotatably connected to the same push frame one, the top of the roller three is also rotatably connected to a connecting rod, the other end of the connecting rod is fixedly connected to the same rotating frame, and the rotating frame is rotatably connected to the support plate through the main shaft;

[0012] The mounting frame is fixed to the top outer wall of the second push frame;

[0013] The quick connector includes a hollow shaft and a flat key matched with a keyway of an output shaft of a motor to be tested, the flat key is slidably connected to the radial direction of the hollow shaft, and an inclined surface is provided on one side of the flat key, an end plate is fixed on the other side of the flat key, and the end plate is connected to the outer wall of the hollow shaft through a spring.

[0014] The bottom outer wall of the support plate is fixed with a motor 1 through a motor frame, and the output shaft of the motor 1 is connected to the end of the main shaft through a coupling.

[0015] Preferably: the variable load comprises a stator coil, a rotor core and an outer shell, the rotor core is rotatably connected to the inner wall of the outer shell via an input shaft, the stator coil is fixed to the inner wall of the outer shell, and the rotor core and the stator coil cooperate with each other.

[0016] Furthermore: a plurality of stator electrodes are led out from different positions of the stator coil, and the stator electrodes are fixed to the outer wall of the outer shell through an insulating plate.

[0017] On the basis of the above scheme: one end of the stator coil is connected to an energy storage device, a protective shell is fixed to the top outer wall of the support box by bolts, a plurality of electrode arms cooperating with the stator electrodes are rotatably connected to the inner side of the protective shell by a connecting shaft, one end of the electrode arm is connected to the inner wall of the protective shell by spring 2, an electromagnet is fixed to the other end of the electrode arm, and another electromagnet cooperating with the electromagnet is fixed to the inner wall of the protective shell.

[0018] A better solution in the aforementioned solution is that a plurality of the electrode arms are connected to another terminal of the energy storage device.

[0019] As a further solution of the present invention: a ball storage barrel is fixed inside the support box, a feeding assembly is arranged at the discharge port of the ball storage barrel, a Galton nail plate is fixed at the bottom of the discharge port of the ball storage barrel, a switch assembly is arranged at the bottom of the Galton nail plate, and the ball storage barrel is loaded with balls that cooperate with the Galton nail plate.

[0020] At the same time, the unloading assembly includes a second motor and a unloading roller. The unloading roller is rotatably connected to the discharge port of the ball storage barrel. The side wall of the unloading roller is provided with a storage groove for storing one ball. The second motor is fixed to the side wall of the ball storage barrel by bolts, and the output shaft of the second motor is fixed to the end of the unloading roller.

[0021] As a preferred embodiment of the present invention: the switch assembly includes a switch shell 1 and a switch shell 2 fixed to each other, the inner wall of the switch shell 2 is provided with a plurality of ball dropping channels corresponding to the ball outlets of the Galton nail plate and open on one side, the inner wall of the ball dropping channel is provided with a pressure plate, the pressure plate is slidably connected to the switch shell 1 through the switch assembly, and the Galton nail plate and the outer wall on the opposite side of the switch shell 1 are buckled with the same spring 4, the inner wall of the switch shell 1 is laterally slidably connected with a slide, and the slide is connected to the inner wall of the switch shell 2 through a spring 3.

[0022] At the same time, the inner wall of the slide is provided with a plurality of slides with slopes and planes and cooperating with the buckle rods, an electrode sheet 1 is fixed to the bottom of the pressure plate, an electrode sheet 2 cooperating with the electrode sheet 1 is fixed to the top of the switch shell 1, and a group of electrode sheet 1 and electrode sheet 2 are connected in series in a power supply circuit of a group of electromagnets.

[0023] A method for detecting motor load performance comprises the following steps:

[0024] S1: Load the motor to be tested on the mounting rack, then start the motor to transport the mounting rack to the inspection station, and at the same time remove the motor to be tested on the mounting rack that has been inspected and install the remaining motors to be tested;

[0025] S2: Set the detection time period, and use the detection time period to control the start-up period of the unloading component in a timing manner to perform a fluctuating load test;

[0026] S3: During the fluctuating load detection process, electrical parameters are collected through an ammeter, a voltmeter, a torque sensor, and a speed sensor to achieve detection.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention provides two groups of fixed components, so that when one group is in the detection process, workers can disassemble and install the motor to be tested on the other group at the same time, thereby achieving time coordination in the process and improving efficiency.

[0029] 2. The present invention, by providing a quick connector, can quickly connect and release the output shaft of the motor to be tested, and no manual or electronic control is required in the process, which increases the convenience of use. In addition, by providing a linear guide groove, an arc guide groove and a guide assembly, it can ensure that the rotation station switching reduces the space occupancy, and can also make the matching and release process of the output shaft of the motor to be tested and the hollow shaft have only linear motion, thereby increasing the docking accuracy.

[0030] 3. The present invention, by setting the variable load as a combination of a stator coil and a rotor core, and combining it with circuit design, can control different electrode arms to contact the stator electrode, thereby controlling the number of turns of the stator coil connected to the circuit, and then using the number of turns to control the rotational damping of the rotor core to achieve load regulation. At the same time, by setting an energy storage device, it can convert the damping into electrical energy for recycling again, thereby significantly reducing energy consumption as a whole.

[0031] 4. The present invention, on the basis of variable load adjustment, realizes completely truly random load fluctuation by utilizing the Galton nail plate, and on the basis of randomness, it also presents a normal distribution, with the high-probability ball outlet corresponding to the medium load, that is, the rated load of the motor to be tested, and the low-probability interval being the fluctuating load, thereby being more consistent with the actual working conditions and increasing the rationality of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of a motor load performance detection device proposed by the present invention;

[0033] Figure 2 A schematic diagram of the structure of a fixed component of a motor load performance detection device proposed by the present invention;

[0034] Figure 3 A schematic diagram of a quick connector structure of a motor load performance detection device proposed by the present invention;

[0035] Figure 4 A schematic diagram of the structure of a guide assembly of a motor load performance detection device proposed by the present invention;

[0036] Figure 5 A schematic diagram of a variable load local structure of a motor load performance detection device proposed by the present invention Figure 1 ;

[0037] Figure 6 A schematic diagram of a variable load local structure of a motor load performance detection device proposed by the present invention Figure 2 ;

[0038] Figure 7 A schematic diagram of the internal structure of a support box of a motor load performance testing device proposed by the present invention;

[0039] Figure 8 This is a cross-sectional structural diagram of a blanking component of a motor load performance detection device proposed by the present invention;

[0040] Fig. 9 A schematic diagram of the structure of a switch component of a motor load performance detection device proposed by the present invention;

[0041] Fig.10 This is a schematic structural diagram of an electrode sheet 1 and an electrode sheet 2 of a motor load performance detection device proposed by the present invention;

[0042] Fig.11 A schematic diagram of the stator coil circuit structure of a motor load performance detection device proposed by the present invention;

[0043] Fig.12 This is a schematic diagram of the electromagnet circuit structure of a motor load performance detection device proposed by the present invention.

[0044] In the figure: 1, support leg; 2, support plate; 3, fixing assembly; 4, quick connector; 5, torque sensor; 6, speed sensor; 7, variable load; 8, support box; 9, linear guide groove; 10, mounting frame; 11, guide assembly; 12, arc guide groove; 13, motor 1; 14, motor frame; 15, hollow shaft; 16, spring 1; 17, end plate; 18, flat key; 19, inclined plane; 20, main shaft; 21, rotating frame; 22, connecting rod; 23, push frame 1; 24, push frame 2; 25, roller 1; 26, roller 2; 27, roller 3; 28, input shaft; 29, insulating plate; 3 0. Stator electrode; 31. Stator coil; 32. Rotor core; 33. Outer shell; 34. Electrode arm; 35. Spring 2; 36. Electromagnet; 37. Protective shell; 38. Connecting shaft; 39. Unloading assembly; 40. Ball storage barrel; 41. Galton nail plate; 42. Switch assembly; 43. Motor 2; 44. Unloading roller; 45. Material trough; 46. Switch shell 1; 47. Spring 3; 48. Spring 4; 49. Switch shell 2; 50. Ball drop channel; 51. Press plate; 52. Buckle rod; 53. Slope; 54. Plane; 55. Slide; 56. Electrode sheet 1; 57. Electrode sheet 2. DETAILED DESCRIPTION

[0045] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] Embodiment 1:

[0048] A motor load performance testing device, such as Figure 1-Figure 12As shown, it includes a load detection part and a workstation switching part. The workstation switching part includes a support plate 2 supported on the ground by a support leg 1 and two sets of fixing components 3 arranged on the top of the support plate 2. The load detection part includes a variable load 7 supported on the ground by a support box 8 and a quick connector 4 for cooperating with the input of the motor to be tested. A torque sensor 5 and a speed sensor 6 are arranged between the quick connector 4 and the input end of the variable load 7.

[0049] The upper surface of the support plate 2 is provided with a linear guide groove 9 and an arc guide groove 12 .

[0050] The fixing assembly 3 includes a mounting frame 10 for mounting the motor to be tested and a guide assembly 11 which is movably limited and matched with the linear guide groove 9 and the arc guide groove 12. The guide assembly 11 includes a roller 1 25, a roller 26, and a roller 3 27 which are rollingly matched with the inner walls of the linear guide groove 9 and the arc guide groove 12. The tops of the rollers 1 25 and 26 are rotatably connected to the same push frame 24. The tops of the rollers 26 and 3 27 are rotatably connected to the same push frame 1 23. The top of the roller 3 27 is also rotatably connected to a connecting rod 22. The other end of the connecting rod 22 is fixedly connected to a rotating frame 21. The rotating frame 21 is rotatably connected to the support plate 2 through the main shaft 20.

[0051] The mounting frame 10 is fixed to the top outer wall of the second push frame 24 .

[0052] The quick connector 4 includes a hollow shaft 15 and a flat key 18 that cooperates with the keyway of the output shaft of the motor to be tested. The flat key 18 is slidably connected to the radial direction of the hollow shaft 15, and a bevel 19 is provided on one side of the flat key 18. An end plate 17 is fixed on the other side of the flat key 18. The end plate 17 is connected to the outer wall of the hollow shaft 15 through a spring 16.

[0053] The bottom outer wall of the support plate 2 is fixed with a motor 13 via a motor frame 14, and the output shaft of the motor 13 is connected to the end of the main shaft 20 via a coupling.

[0054] When the device is in use, the motor to be tested can be fixed on the mounting frame 10, and then the main shaft 20 is driven to rotate by the motor 13, the main shaft 20 drives the rotating frame 21 to rotate, thereby driving the connecting rod 22 to rotate, and the roller three 27 rolls along the arc guide groove 12, thereby pushing the roller one 25 and the roller two 26 to roll through the push frame 1 23 and the push frame 24, until the roller one 25 rolls to the intersection of the linear guide groove 9 and the arc guide groove 12, it will roll into the linear guide groove 9, and then roll along the linear guide groove 9, and then the roller two 26 will roll into the linear guide groove 9, so that the push frame 24 is parallel to the linear guide groove 9. At this time, the output shaft of the motor to be tested is coaxial with the hollow shaft 15, and as the roller three 27 continues to roll, the roller one 25 and the roller two 26 are pushed to roll. Wheel two 26 is pushed forward together until the output shaft of the motor to be tested is inserted into the hollow shaft 15, and the flat key 18 is limited by the output shaft of the motor to be tested and moves outward through the inclined surface 19. In the above process, another mounting frame 10 is rotated from the test station to the loading and unloading station, and then the motor to be tested is started. The motor to be tested starts to rotate until the output shaft rotates to the keyway and the position of the flat key 18 matches. The flat key 18 receives the pulling force of the spring one 16 and is stuck in the keyway to realize the transmission with the hollow shaft 15. At this time, a voltmeter and an ammeter can be arranged in the power supply circuit of the motor to be tested to continuously change the gear position of the variable load 7. In this process, the input and output parameters of the motor to be tested are detected by the torque sensor 5, the speed sensor 6, the voltmeter and the ammeter.

[0055] The device is provided with two groups of fixed components 3, so that when one group is in the detection process, the worker can disassemble and install the motor to be tested on the other group at the same time, thereby realizing time coordination in the process and improving efficiency.

[0056] In addition, the device is provided with a quick connector 4, which can be quickly connected and released with the output shaft of the motor to be tested. No manual or electronic control is required in this process, which increases the convenience of use. By providing a linear guide groove 9, an arc guide groove 12 and a guide assembly 11, it can ensure that the rotation station switching reduces the space occupancy, and can also make the matching and release process of the output shaft of the motor to be tested and the hollow shaft 15 have only linear motion, thereby increasing the docking accuracy.

[0057] To solve the load problem; Figure 5 As shown, the variable load 7 includes a stator coil 31, a rotor core 32 and an outer shell 33. The rotor core 32 is rotatably connected to the inner wall of the outer shell 33 through the input shaft 28. The stator coil 31 is fixed to the inner wall of the outer shell 33, and the rotor core 32 and the stator coil 31 cooperate with each other. A plurality of stator electrodes 30 are led out from different positions of the coil of the stator coil 31, and the stator electrode 30 is fixed to the outer wall of the outer shell 33 through the insulating plate 29.

[0058] One end of the stator coil 31 is connected to an energy storage device, and a protective shell 37 is fixed to the top outer wall of the support box 8 by bolts. The inner side of the protective shell 37 is rotatably connected to a plurality of electrode arms 34 that cooperate with the stator electrode 30 through a connecting shaft 38. One end of the electrode arm 34 is connected to the inner wall of the protective shell 37 through a spring 35, and an electromagnet 36 is fixed to the other end of the electrode arm 34. Another electromagnet 36 that cooperates with the electromagnet 36 is fixed to the inner wall of the protective shell 37, and the plurality of electrode arms 34 are connected to another terminal of the energy storage device.

[0059] In this embodiment, the energy storage device may use a battery pack to store energy.

[0060] This device, by setting the variable load 7 as a combination of the stator coil 31 and the rotor core 32, and combining it with the circuit design, can control different electrode arms 34 to contact with the stator electrode 30, thereby controlling the number of turns of the stator coil 31 connected to the circuit, and then using the number of turns to control the rotational damping of the rotor core 32 to achieve load regulation. At the same time, by setting up an energy storage device, it can convert the damping into electrical energy for recycling again, thereby significantly reducing energy consumption as a whole.

[0061] Because when the motor is actually working, its load cannot be completely consistent within one rotation cycle, especially for the motor used in stamping operation, the load fluctuates greatly within one rotation cycle, and for the motor that has not left the factory, its load fluctuation under rated load is random. Therefore, in order to better match the increase and decrease detection with the actual working conditions, random load fluctuations are also required during detection.

[0062] In order to solve the problem of random load fluctuation; Figure 7-12 As shown, a ball storage barrel 40 is fixed inside the support box 8, a discharge assembly 39 is provided at the discharge port of the ball storage barrel 40, a Galton nail plate 41 is fixed at the bottom of the discharge port of the ball storage barrel 40, a switch assembly 42 is provided at the bottom of the Galton nail plate 41, and the ball storage barrel 40 is loaded with balls that cooperate with the Galton nail plate 41.

[0063] The unloading assembly 39 includes a second motor 43 and a unloading roller 44. The unloading roller 44 is rotatably connected to the discharge port of the ball storage barrel 40. The side wall of the unloading roller 44 is provided with a storage groove 45 for storing one ball. The second motor 43 is fixed to the side wall of the ball storage barrel 40 by bolts, and the output shaft of the second motor 43 is fixed to the end of the unloading roller 44.

[0064] The switch assembly 42 includes a switch shell 49 and a switch shell 49 fixed to each other. The inner wall of the switch shell 49 is provided with a plurality of ball-dropping channels 50 corresponding to the ball outlets of the Galton nail plate 41 and open on one side. The inner wall of the ball-dropping channel 50 is provided with a pressure plate 51. The pressure plate 51 is slidably connected to the switch shell 46 through the switch assembly 42, and the Galton nail plate 41 and the outer wall of the switch shell 46 on the opposite side are buckled with the same spring four 48. The inner wall of the switch shell 46 is laterally slidably connected with a slide 55. The slide 55 is connected to the inner wall of the switch shell 49 through a spring three 47, and the inner wall of the slide 55 is provided with a plurality of slides 55 with slopes 53 and planes 54 and cooperating with the buckle rod 52.

[0065] An electrode sheet 1 56 is fixed to the bottom of the pressure plate 51 , and an electrode sheet 2 57 matching the electrode sheet 1 56 is fixed to the top of the switch housing 1 46 . A group of electrode sheets 1 56 and electrode sheets 2 57 are connected in series in a power supply circuit of a group of electromagnets 36 .

[0066] When the motor 2 43 is started, it can drive the unloading roller 44 to rotate, so that the balls in the ball storage barrel 40 can be transported individually. The balls enter from the top of the Galton nail plate 41, and then after passing through the Galton nail plate 41, they leak out from one of the ball outlets of the Galton nail plate 41 into the ball falling channel 50, and then hit the pressure plate 51, so that the pressure plate 51 descends, and the pressure plate 51 drives the buckle rod 52 to descend. The slope 53 first cooperates with the slope 53 to make the slide 55 move laterally. When it moves laterally to the maximum position, the remaining buckle rods 52 break away from the plane 54 and rebound, and the buckle rod 52 continues to descend so that the buckle rod 52 is buckled to the plane 54, and the electrode sheet 1 56 contacts the electrode sheet 2 57, one group of electromagnets 36 is turned on, and one of the electrode arms 34 rotates to contact the stator electrode 30. At this time, it is a load condition.

[0067] Specifically, since the ball enters from the top of the Galton nail plate 41 and is discharged randomly from the ball outlet of the Galton nail plate 41, and from the middle to both sides, the probability of the ball outlet from each ball outlet is normally distributed, so the specific setting is that the number of electrode arms 34 and stator electrodes 30, the number of ball outlets of the Galton nail plate 41, the number of groups of electrode sheet one 56 and electrode sheet two 57 are the same, and their linear arrangement connection method is also the same, that is, they are all numbered according to 1-n, and the electrode sheet one 56 and electrode sheet two 57 with the same number are connected to the electromagnet 36 with the same number.

[0068] This device, based on the adjustable variable load 7, realizes completely truly random load fluctuations by utilizing the Galton nail plate 41, and on the basis of randomness, it also presents a normal distribution, with the high-probability ball outlet corresponding to the medium load, that is, the rated load of the motor to be tested, and the low-probability interval being the fluctuating load, thereby being more consistent with the actual working conditions and increasing the rationality of the detection.

[0069] When the present embodiment is in use, the motor to be tested can be fixed on the mounting frame 10, and then the main shaft 20 is driven to rotate by the motor 13, the main shaft 20 drives the rotating frame 21 to rotate, thereby driving the connecting rod 22 to rotate, and the roller 3 27 rolls along the arc guide groove 12, thereby pushing the roller 1 25 and the roller 2 26 to roll through the push frame 1 23 and the push frame 2 24, until the roller 1 25 rolls to the intersection of the linear guide groove 9 and the arc guide groove 12, it will roll into the linear guide groove 9, and then roll along the linear guide groove 9, and then the roller 2 26 will roll into the linear guide groove 9, so that the push frame 2 24 is parallel to the linear guide groove 9, and at this time the output shaft of the motor to be tested is parallel to the hollow shaft 1 5 coaxially, as roller three 27 continues to roll, roller one 25 and roller two 26 are pushed forward together until the output shaft of the motor to be tested is inserted into the hollow shaft 15, and the flat key 18 is limited by the output shaft of the motor to be tested and moves outward through the inclined surface 19. In the above process, another mounting frame 10 is rotated from the test station to the loading and unloading station, and then the motor to be tested is started. The motor to be tested starts to rotate until the output shaft rotates to the key slot and the flat key 18 position match, and the flat key 18 receives the tension of the spring one 16 and is stuck in the key slot to realize the transmission with the hollow shaft 15. At this time, a voltmeter and an ammeter can be arranged in the power supply circuit of the motor to be tested to continuously change the variable load 7 gear, during this process, the input and output parameters of the motor to be tested are detected by the torque sensor 5, the speed sensor 6, the voltmeter and the ammeter. Because when the motor is actually working, its load cannot be completely consistent within one rotation cycle, especially for the motor used in stamping operations, the load fluctuates greatly within one rotation cycle, and for the motor that has not left the factory, its load fluctuation is random under the rated load. In order to increase or decrease the detection to better match the actual working conditions, the load fluctuates randomly during the detection. Therefore, when the motor 2 43 is started, it can drive the unloading roller 44 to rotate, so that the balls in the ball storage barrel 40 can be transported individually, and the balls are discharged from the Galton nail plate 4 1, and then passes through the Galton nail plate 41, and leaks out from one of the ball outlets of the Galton nail plate 41 into the ball falling channel 50, and then hits the pressure plate 51, so that the pressure plate 51 descends, and the pressure plate 51 drives the buckle rod 52 to descend, and the slope 53 first cooperates with the slope 53 to make the slide 55 move laterally. When the lateral movement reaches the maximum position, the remaining buckle rods 52 break away from the plane 54 and rebound, and the buckle rod 52 continues to descend so that the buckle rod 52 is buckled to the plane 54, and the electrode sheet 1 56 is in contact with the electrode sheet 2 57, one group of electromagnets 36 is turned on, and one of the electrode arms 34 rotates to contact the stator electrode 30. At this time, it is a load condition.

[0070] Embodiment 2:

[0071] A method for detecting motor load performance, such as Figure 1-12 As shown, it includes the following steps:

[0072] S1: Load the motor to be tested on the mounting frame 10, then start the motor 13 to transport the mounting frame 10 to the inspection station, and at the same time remove the motor to be tested on the mounting frame 10 that has been inspected and install the remaining motors to be tested;

[0073] S2: Setting a detection time period, and using the detection time period to control the start-up period of the material unloading assembly 39 in a timing manner, to perform a fluctuating load detection;

[0074] S3: During the fluctuating load detection process, electrical parameters are collected through the ammeter, voltmeter, torque sensor 5 and speed sensor 6 to achieve detection.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A motor load performance detection device, comprising a load detection unit and a station switching unit, characterized in that: The workstation switching unit comprises a support plate (2) supported on the ground by support legs (1) and two sets of fixing components (3) arranged on the top of the support plate (2); the load detection unit comprises a variable load (7) supported on the ground by a support box (8) and a quick connector (4) for matching with the input of the motor to be tested; a torque sensor (5) and a speed sensor (6) are arranged between the quick connector (4) and the input end of the variable load (7); The upper surface of the support plate (2) is provided with a linear guide groove (9) and an arc-shaped guide groove (12); The fixing assembly (3) comprises a mounting frame (10) for mounting the motor to be tested and a guide assembly (11) movably limited and matched with the linear guide groove (9) and the arc guide groove (12); the guide assembly (11) comprises a roller 1 (25), a roller 2 (26) and a roller 3 (27) which are rollingly matched with the inner walls of the linear guide groove (9) and the arc guide groove (12); the tops of the roller 1 (25) and the roller 2 (26) are rotatably connected to the same push frame 2 (24); the tops of the roller 2 (26) and the roller 3 (27) are rotatably connected to the same push frame 1 (23); the top of the roller 3 (27) is also rotatably connected to a connecting rod (22); the other end of the connecting rod (22) is fixedly connected to a rotating frame (21); the rotating frame (21) is rotatably connected to the support plate (2) through a main shaft (20); The mounting frame (10) is fixed to the top outer wall of the second push frame (24); The quick connector (4) comprises a hollow shaft (15) and a flat key (18) matched with a keyway of an output shaft of a motor to be tested, the flat key (18) is slidably connected to the radial direction of the hollow shaft (15), and a slope (19) is provided on one side of the flat key (18), an end plate (17) is fixed on the other side of the flat key (18), and the end plate (17) is connected to the outer wall of the hollow shaft (15) through a spring 1 (16); A motor 1 (13) is fixed to the bottom outer wall of the support plate (2) via a motor frame (14); an output shaft of the motor 1 (13) is connected to the end of a main shaft (20) via a coupling.

2. A motor load performance detection device according to claim 1, characterized in that: The variable load (7) comprises a stator coil (31), a rotor core (32) and an outer shell (33); the rotor core (32) is rotatably connected to the inner wall of the outer shell (33) via an input shaft (28); the stator coil (31) is fixed to the inner wall of the outer shell (33); and the rotor core (32) and the stator coil (31) cooperate with each other.

3. A motor load performance detection device according to claim 2, characterized in that: A plurality of stator electrodes (30) are led out from different positions of the stator coil (31), and the stator electrodes (30) are fixed to the outer wall of the outer shell (33) via an insulating plate (29).

4. A motor load performance detection device according to claim 3, characterized in that: One end of the stator coil (31) is connected to an energy storage device, a protective shell (37) is fixed to the top outer wall of the support box (8) by bolts, and a plurality of electrode arms (34) cooperating with the stator electrode (30) are rotatably connected to the inner side of the protective shell (37) by a connecting shaft (38), one end of the electrode arm (34) is connected to the inner wall of the protective shell (37) by a spring (35), an electromagnet (36) is fixed to the other end of the electrode arm (34), and another electromagnet (36) cooperating with the electromagnet (36) is fixed to the inner wall of the protective shell (37).

5. The motor load performance detection device according to claim 4, characterized in that: The plurality of electrode arms (34) are connected to another terminal of the energy storage device.

6. The motor load performance detection device according to claim 1, characterized in that: A ball storage barrel (40) is fixed inside the support box (8), a discharge port of the ball storage barrel (40) is provided with a discharge assembly (39), a Galton nail plate (41) is fixed at the bottom of the discharge port of the ball storage barrel (40), a switch assembly (42) is provided at the bottom of the Galton nail plate (41), and balls matching the Galton nail plate (41) are loaded in the ball storage barrel (40).

7. The motor load performance detection device according to claim 6, characterized in that: The unloading assembly (39) comprises a second motor (43) and a unloading roller (44), wherein the unloading roller (44) is rotatably connected to the discharge port of the ball storage barrel (40), and a material storage groove (45) for storing one ball is provided on the side wall of the unloading roller (44), the second motor (43) is fixed to the side wall of the ball storage barrel (40) by bolts, and the output shaft of the second motor (43) is fixed to the end of the unloading roller (44).

8. The motor load performance detection device according to claim 7, characterized in that: The switch assembly (42) comprises a switch housing (49) and a switch housing (49) fixed to each other. The inner wall of the switch housing (49) is provided with a plurality of ball-dropping channels (50) corresponding to the ball outlets of the Galton nail plate (41) and open on one side. The inner wall of the ball-dropping channel (50) is provided with a pressing plate (51). The pressing plate (51) is slidably connected to the switch housing (46) through the switch assembly (42). The Galton nail plate (41) and the outer wall of the switch housing (46) on the opposite side are buckled with a same spring (48). The inner wall of the switch housing (46) is laterally slidably connected with a slide (55). The slide (55) is connected to the inner wall of the switch housing (49) through a spring (47).

9. The motor load performance detection device according to claim 8, characterized in that: The inner wall of the slide (55) is provided with a plurality of slides (55) having slopes (53) and planes (54) and cooperating with the buckle rod (52); an electrode sheet 1 (56) is fixed to the bottom of the pressure plate (51); an electrode sheet 2 (57) cooperating with the electrode sheet 1 (56) is fixed to the top of the switch housing 1 (46); a group of electrode sheets 1 (56) and electrode sheets 2 (57) are connected in series in a power supply circuit of a group of electromagnets (36).

10. A method for detecting motor load performance, which is a method for using the motor load performance detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Loading the motor to be tested on the mounting frame (10), then starting the motor 1 (13) to transport the mounting frame (10) to the testing station, and at the same time removing the motor to be tested on the mounting frame (10) that has been tested and installing the remaining motors to be tested; S2: setting a detection time period, and using the detection time period to control the start-up period of the material unloading component (39) in a timing manner to perform a fluctuating load detection; S3: During the fluctuating load detection process, electrical parameters are collected through an ammeter, a voltmeter, a torque sensor (5) and a speed sensor (6) to achieve detection.

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