Brushless motor fatigue aging test equipment and test method thereof

Abstract

The invention relates to the technical field of brushless motor testing, in particular to brushless motor fatigue aging testing equipment and a testing method thereof. Comprising a test platform, and a motor fixing mechanism is arranged at the top of the test platform; a brushless motor is arranged at the top of the motor fixing mechanism; the top of the test platform is provided with a self-positioning load mechanism. The connecting shaft assembly is controlled to reach the output shaft of the brushless motor, then the connecting shaft assembly is controlled to position the output axis of the brushless motor, and the spatial positions of the dynamometer and the torque sensor are adjusted in real time by controlling the first electric sliding table and the two sets of second electric sliding tables so that the spatial positions can be kept consistent with the output axis of the brushless motor. And then the connecting shaft assembly is controlled to be in interference fit with the output shaft of the brushless motor, so that subsequent load application is facilitated, the situation that an adaptive coupling needs to be used for connection work is avoided, the axis adjustment work is more efficient, and the working effect of the test equipment is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of brushless motor testing, and in particular relates to a brushless motor fatigue aging testing device and a testing method thereof. Background Art

[0002] Brushless motors are widely used in the field of high-precision drives due to their high efficiency, low noise, and long life. The fatigue damage and aging problems of brushless motors are becoming increasingly prominent, and their performance degradation directly threatens the safety and economy of the system. Therefore, fatigue and aging tests have become the core of reliability design.

[0003] After searching, in the prior art, Chinese patent announcement number: CN222028377U, announcement date: 2024-11-19, discloses a hub motor fatigue durability test fixture, including a fixture seat, a linear slide rail, a clamping mechanism, a first slider seat, a wheel bracket and a support wheel, so as to avoid the problem of loosening of the second clamping bolt on the clamping sleeve caused by the up and down displacement of the central axis of the hub motor during the test of the hub motor, especially during the bump test. The freedom of the central axis of the hub motor in the up and down directions is restricted by the positioning hole of the clamping sleeve. In addition, the second slider seat can support the clamping sleeve, reduce the shear force borne by the lateral slide bar and the central axis of the hub motor, and avoid damage problems. Since the position of the clamping sleeve can be movably adjusted, it can meet the use requirements of hub motor testing operations of various lengths and specifications.

[0004] However, the device still has the following defects:

[0005] At present, fatigue aging tests of brushless motors usually simulate cyclic loads under actual working conditions, and test the limits of brushless motors by applying loads to the motors and running them for a long time. The output end of the brushless motor needs to be connected to the dynamometer through a torque sensor and a coupling, and the axis must be consistent. The preparation work is relatively cumbersome, which reduces the working effect of the test equipment. Summary of the invention

[0006] In view of the above problems, the present invention provides a brushless motor fatigue aging test device, comprising a test platform, a motor fixing mechanism is provided on the top of the test platform; a brushless motor is provided on the top of the motor fixing mechanism; a power quality detector is provided on the top of the test platform; and a self-positioning load mechanism is provided on the top of the test platform;

[0007] The self-positioning load mechanism comprises a first electric slide that provides horizontal displacement capability of the axis; the top of the first electric slide is transmission-connected with a second translation plate for installation;

[0008] Two sets of second electric slides providing vertical displacement capability of the axis are symmetrically arranged at the two side edges of the top of the second translation plate; a dynamometer for increasing the load of the brushless motor is connected between the two sets of the second electric slides in a vertical transmission direction; two sets of guide posts are symmetrically arranged at the two side edges of the top of the second translation plate;

[0009] A torque sensor for monitoring torque is slidably connected between the two groups of guide columns in a vertical direction; one end of the torque sensor is transmission-connected to the output end of the dynamometer, and the other end is transmission-connected to a coupling assembly capable of positioning the output axis of the brushless motor.

[0010] Furthermore, a closed structure is provided on the top of the test platform; a temperature control structure is provided on the top of the closed structure; two groups of observation doors are provided on one side wall of the closed structure; a detection and positioning mechanism is provided on the top inner wall of the closed structure; a group of lighting strips are provided on the top of one side wall of each group of observation doors close to the closed structure; a translation groove is provided on the top of the test platform; a support plate is movably penetrated on the inner wall of the translation groove close to the observation door; and the motor fixing mechanism is transmission-connected to the top of the support plate.

[0011] Furthermore, the motor fixing mechanism includes a support seat; four groups of movable through grooves are symmetrically opened on the two side walls of the support seat; two groups of first translation plates are arranged in the support seat; each group of the first translation plates is slidably connected in the corresponding two groups of movable through grooves; both ends of each group of the first translation plates extend to the outside of the support seat, and are transmission-connected with a group of fixed columns; a group of telescopic columns are movably penetrated on the opposite side walls of the two groups of fixed columns on the same side.

[0012] Furthermore, a group of connecting columns is provided on the top of one end of each group of telescopic columns away from the corresponding group of fixed columns; a group of rotating plates is rotatably connected to the top of each group of connecting columns; a group of first electric push rods is provided on the top of one end of each group of rotating plates away from the corresponding group of connecting columns; the output end of each group of the first electric push rods passes through the corresponding group of rotating plates and is sleeved with a group of top blocks.

[0013] Furthermore, the coupling assembly includes a fixed plate; a second electric push rod is provided on a side wall of the fixed plate away from the torque sensor; a connecting disk is transmission-connected to the output end of the second electric push rod; two groups of mounting plates are symmetrically provided on a side wall of the connecting disk away from the second electric push rod; two groups of third electric push rods are symmetrically provided on the side walls opposite to the two groups of mounting plates.

[0014] Furthermore, the output end of each group of the third electric push rods extends between the two groups of mounting plates and is connected to a group of coupling plates for transmission; the cross-section of each group of the coupling plates is fan-shaped and the inner wall is provided with anti-slip grooves; two groups of arc grooves are symmetrically opened on one side wall of the connecting plate away from the second electric push rod; two groups of rotating rods are symmetrically slidably connected in the two groups of the arc grooves.

[0015] Furthermore, two groups of distance sensors are symmetrically provided on one end of the opposite side wall of the two groups of rotating rods away from the connecting disk; an annular cavity is opened in the connecting disk; an internal gear ring is rotatably connected in the annular cavity; the internal gear ring is transmission-connected to the two groups of rotating rods; two groups of guide gears are distributed in an annular array in the annular cavity; each group of guide gears is meshingly connected with the internal gear ring.

[0016] Furthermore, the detection and positioning mechanism includes a crossbeam; a fourth electric push rod is provided at the bottom center of the crossbeam; a first detection plate is transmission-connected to the output end of the fourth electric push rod; and a plurality of groups of second detection plates are hingedly connected on both sides of each group of the first detection plates.

[0017] Furthermore, the bottom of each group of the second detection plates and the first detection plates are provided with several groups of acoustic wave sensors and temperature sensors distributed in a rectangular array; two groups of second slide grooves are symmetrically opened on both sides of the bottom of the beam; each group of the second slide grooves are slidably connected with several groups of fifth electric push rods; the output end of each group of the fifth electric push rods is hinged to the top of the corresponding group of second detection plates.

[0018] A testing method for a brushless motor fatigue aging testing device, the testing method comprising:

[0019] Place the brushless motor on top of the motor mounting mechanism;

[0020] Control the motor fixing mechanism to fix the brushless motor:

[0021] Connect the brushless motor to the power supply through the power quality detector;

[0022] Control the self-positioning load mechanism to automatically position the output axis of the brushless motor and perform the connection work;

[0023] The control detection and positioning mechanism is wrapped around the outside of the brushless motor;

[0024] Start the brushless motor;

[0025] Control the self-positioning load mechanism to gradually increase the load on the brushless motor;

[0026] The power quality detector monitors the voltage and current changes of the brushless motor, and the detection and positioning mechanism monitors the temperature distribution of the brushless motor;

[0027] Completed the fatigue aging test of brushless motor.

[0028] The beneficial effects of the present invention are:

[0029] 1. Control the coupling assembly to reach the output shaft of the brushless motor, then control the coupling assembly to position the output axis of the brushless motor, and adjust the spatial position of the dynamometer and the torque sensor in real time by controlling the first electric slide and the two sets of second electric slides to keep consistent with the output axis of the brushless motor. Then control the coupling assembly to have an interference fit with the output shaft of the brushless motor to facilitate subsequent load application, which not only avoids the need to use an adapted coupling for connection, but also makes the axis adjustment more efficient, thereby improving the working effect of the test equipment.

[0030] 2. Control the fourth electric push rod and several groups of fifth electric push rods to drive the first detection plate and several groups of second detection plates to descend to the corresponding height, and then control several groups of fifth electric push rods to drive the corresponding second detection plates to descend separately. Since several groups of fifth electric push rods can slide horizontally in the corresponding second slide grooves, the first detection plate and several groups of second detection plates can be wrapped around the outside of the brushless motor in an arc surface. Then, by using several groups of acoustic wave sensors and temperature sensors arranged in an array, the temperature distribution and abnormal sound parts of the brushless motor during operation can be accurately located, thereby improving the detection accuracy of the test equipment.

[0031] 3. By controlling the two groups of first translation plates to move to corresponding positions, and then controlling the four groups of telescopic columns to extend and retract to corresponding lengths, and then controlling the rotating plate to drive the first electric push rod to rotate to just above the mounting hole of the brushless motor, and then controlling the output end of the first electric push rod to penetrate into the corresponding mounting hole while the top block applies downward pressure to the brushless motor, and then controlling the four groups of first electric push rods to stretch in different directions, the brushless motor is fixed, and the fixing stability of the brushless motor can be adjusted in real time during the test work, thereby improving the fixing efficiency and effect of the test equipment.

[0032] 4. When conducting fatigue aging tests on brushless motors, first open the two sets of observation doors, then control the first motor to drive the first screw to rotate, and under the threaded connection between the first screw and the first slider, the first slider drives the support plate to move toward the outside of the closed structure, and then fix the brushless motor on the top of the motor fixing mechanism. During this process, personnel can avoid the narrow space in the closed structure, and then control the support plate to reset, thereby improving the convenience of fixing the brushless motor of the test equipment.

[0033] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a test device according to an embodiment of the present invention is shown;

[0036] Figure 2 It shows a schematic structural diagram of a test device fixing a motor according to an embodiment of the present invention;

[0037] Figure 3 A schematic top view and cross-sectional view of a test platform according to an embodiment of the present invention is shown;

[0038] Figure 4 A schematic diagram of the structure of a motor fixing mechanism according to an embodiment of the present invention is shown;

[0039] Figure 5 A schematic cross-sectional view of a motor fixing mechanism according to an embodiment of the present invention is shown;

[0040] Figure 6 It shows a schematic structural diagram of a self-positioning load mechanism according to an embodiment of the present invention;

[0041] Figure 7 A schematic structural diagram of a shaft coupling assembly according to an embodiment of the present invention is shown;

[0042] Figure 8 A schematic cross-sectional view of a connection disk according to an embodiment of the present invention is shown;

[0043] Fig. 9 A schematic structural diagram of a detection and positioning mechanism according to an embodiment of the present invention is shown.

[0044] In the figure: 1. test platform; 2. closed structure; 3. temperature control structure; 4. observation door; 5. motor fixing mechanism; 6. brushless motor; 7. power quality detector; 8. self-positioning load mechanism; 9. detection and positioning mechanism; 10. lighting strip; 11. translation slot; 12. support plate; 13. first slide slot; 14. first slider; 15. first screw rod; 16. first motor; 501. support seat; 502. movable through slot; 503. first translation plate; 504. fixed column; 505. telescopic column; 506. connecting column; 507. rotating plate; 508. first electric push rod; 509. top block; 510. second motor; 511. second screw rod; 512. transmission chamber; 513. third screw rod; 514. second slider; 801. first electric slide; 802, second translation plate; 803, second electric slide; 804, dynamometer; 805, guide column; 806, torque sensor; 807, coupling assembly; 80701, fixing plate; 80702, second electric push rod; 80703, connecting plate; 80704, mounting plate; 80705, third electric push rod; 80706, coupling plate; 80707, arc groove; 80708, rotating rod; 80709, distance sensor; 80710, annular cavity; 80711, inner gear ring; 80712, guide gear; 901, crossbeam; 902, second slide groove; 903, fourth electric push rod; 904, first detection plate; 905, second detection plate; 906, acoustic wave sensor; 907, temperature sensor; 908, fifth electric push rod. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The embodiment of the present invention provides a brushless motor fatigue aging test device, including a test platform 1. For example, Figure 1 , Figure 2 and Figure 3As shown, a closed structure 2 is provided on the top of the test platform 1; a temperature control structure 3 is provided on the top of the closed structure 2; two sets of observation doors 4 are provided on one side wall of the closed structure 2; a motor fixing mechanism 5 is provided on the top of the test platform 1; a brushless motor 6 is provided on the top of the motor fixing mechanism 5; a power quality detector 7 is provided on the top of the test platform 1; a self-positioning load mechanism 8 is provided on the top of the test platform 1; the output end of the self-positioning load mechanism 8 is transmission-connected to the output end of the brushless motor 6;

[0047] Specifically, a detection and positioning mechanism 9 is provided on the top inner wall of the closed structure 2; a group of lighting strips 10 are provided on the top of a side wall of each group of observation doors 4 close to the closed structure 2; a translation groove 11 is provided on the top of the test platform 1; a support plate 12 is movably penetrated on the inner wall of the translation groove 11 close to the observation door 4; the motor fixing mechanism 5 is transmission-connected to the top of the support plate 12; a first slide groove 13 is provided on the bottom inner wall of the translation groove 11;

[0048] Specifically, a first slider 14 is slidably connected in the first slide groove 13; the first slider 14 is transmission-connected to the support plate 12; a first screw rod 15 is provided in the first slide groove 13; a first motor 16 is provided on a side wall of the test platform 1; the output end of the first motor 16 is transmission-connected to the first screw rod 15; the first screw rod 15 is threadedly connected to the first slider 14.

[0049] When performing the fatigue aging test of the brushless motor 6, first open the two sets of observation doors 4, then control the first motor 16 to drive the first screw rod 15 to rotate, and under the threaded connection relationship between the first screw rod 15 and the first slider 14, the first slider 14 drives the support plate 12 to move toward the outside of the closed structure 2, then fix the brushless motor 6 on the top of the motor fixing mechanism 5, then control the support plate 12 to reset, and then connect the brushless motor 6 to the power supply through the power quality detector 7, and then drive the output end of the brushless motor 6 to the output end of the self-positioning load mechanism 8, and then close it. Two groups of observation doors 4 carry out fatigue aging test of brushless motor 6. First, the detection and positioning mechanism 9 is controlled to wrap around the outside of brushless motor 6, and then brushless motor 6 is started. Power quality detector 7 can monitor the current and voltage changes of brushless motor 6. Self-positioning load mechanism 8 gradually increases the load of brushless motor 6. Detection and positioning mechanism 9 can detect temperature distribution and change of brushless motor 6. Temperature control structure 3 can simulate the working environment temperature of brushless motor 6, thereby realizing fatigue aging test of brushless motor 6 under load, making the fixing work of brushless motor 6 more convenient.

[0050] For example, Figure 4 and Figure 5As shown, the motor fixing mechanism 5 includes a support seat 501; four groups of movable through grooves 502 are symmetrically opened on the two side walls of the support seat 501; two groups of first translation plates 503 are arranged in the support seat 501; each group of the first translation plates 503 is slidably connected in the corresponding two groups of movable through grooves 502; both ends of each group of the first translation plates 503 extend to the outside of the support seat 501, and are transmission-connected with a group of fixed columns 504; a group of telescopic columns 505 are movably penetrated on the opposite side walls of the two groups of the fixed columns 504 on the same side;

[0051] Specifically, a group of second motors 510 are provided on a corresponding side wall of each group of fixed columns 504; a group of second screw rods 511 are drivingly connected to the output end of each group of second motors 510; each group of second screw rods 511 are threadedly connected to a corresponding group of telescopic columns 505; a group of connecting columns 506 are provided on the top of one end of each group of telescopic columns 505 away from the corresponding group of fixed columns 504; a group of rotating plates 507 are rotatably connected to the top of each group of connecting columns 506; a group of first electric push rods 508 are provided on the top of one end of each group of rotating plates 507 away from the corresponding group of connecting columns 506;

[0052] Specifically, the output end of each group of the first electric push rods 508 passes through a corresponding group of rotating plates and is sleeved with a group of top blocks 509; a transmission chamber 512 is opened in the support seat 501; two groups of third screw rods 513 are arranged in the transmission chamber 512; one end of the two groups of the third screw rods 513 are fixedly connected, and the other ends are respectively rotatably connected to the inner walls on both sides of the transmission chamber 512; the thread directions of the two groups of the third screw rods 513 are opposite, and the central axes are on the same straight line; two groups of second sliders 514 are slidably connected to the bottom inner wall of the transmission chamber 512; each group of the second sliders 514 is threadedly connected to the corresponding group of the third screw rods 513; each group of the second sliders 514 is transmission-connected to the corresponding group of the first translation plates 503.

[0053] The brushless motor 6 is placed on the top of the motor fixing mechanism 5, and then the two groups of first translation plates 503 are controlled to move to the corresponding positions, and then the four groups of telescopic columns 505 are controlled to extend and retract to the corresponding lengths, and then the rotating plate 507 is controlled to drive the first electric push rod 508 to rotate to just above the mounting hole of the brushless motor 6, and then the output end of the first electric push rod 508 is controlled to pass through the corresponding mounting hole, and at the same time the top block 509 applies downward pressure to the brushless motor 6, and then the four groups of first electric push rods 508 are controlled to stretch in different directions, so as to fix the brushless motor 6, and the fixing stability of the brushless motor 6 can be adjusted in real time during the test work, thereby improving the fixing efficiency and effect of the test equipment.

[0054] For example, Figure 6As shown, the self-positioning load mechanism 8 includes a first electric slide 801; the top of the first electric slide 801 is transmission-connected with a second translation plate 802; two groups of second electric slides 803 are symmetrically arranged at the top and side edges of the second translation plate 802; a dynamometer 804 is transmission-connected between the two groups of the second electric slides 803 along the vertical direction; two groups of guide columns 805 are symmetrically arranged at the top and side edges of the second translation plate 802; a torque sensor 806 is slidingly connected between the two groups of the guide columns 805 along the vertical direction; one end of the torque sensor 806 is transmission-connected to the output end of the dynamometer 804, and the other end is transmission-connected to a coupling assembly 807.

[0055] For example, Figure 7 and Figure 8 As shown, the coupling assembly 807 includes a fixed plate 80701; a second electric push rod 80702 is provided on a side wall of the fixed plate 80701 away from the torque sensor 806; a connecting disk 80703 is transmission-connected on the output end of the second electric push rod 80702; two groups of mounting plates 80704 are symmetrically provided on a side wall of the connecting disk 80703 away from the second electric push rod 80702; two groups of third electric push rods 80705 are symmetrically provided on the opposite side walls of the two groups of mounting plates 80704; the output end of each group of the third electric push rods 80705 extends between the two groups of mounting plates 80704, and is transmission-connected with a group of coupling plates 80706; the cross-section of each group of the coupling plates 80706 is a fan ring, and anti-slip patterns are provided on the inner wall;

[0056] Specifically, two groups of arc grooves 80707 are symmetrically provided on a side wall of the connecting disk 80703 away from the second electric push rod 80702; two groups of rotating rods 80708 are symmetrically slidably connected in the two groups of arc grooves 80707; two groups of distance sensors 80709 are symmetrically provided on one end of the opposite side wall of the two groups of rotating rods 80708 away from the connecting disk 80703; an annular cavity 80710 is provided in the connecting disk 80703; an internal gear ring 80711 is rotatably connected in the annular cavity 80710; the internal gear ring 80711 is transmission-connected to the two groups of rotating rods 80708; two groups of guide gears 80712 are distributed in a circular array in the annular cavity 80710; each group of guide gears 80712 is meshingly connected with the internal gear ring 80711.

[0057] When conducting fatigue aging test of brushless motor 6, after preliminarily adjusting the output end position of self-positioning load mechanism 8, control the second electric push rod 80702 to drive two sets of coupling plates 80706 to reach both sides of the output shaft of brushless motor 6, then control the inner gear ring 80711 to drive two sets of rotating rods 80708 to reciprocate around the central axis of connecting disk 80703, two sets of distance sensors 80709 always monitor the distance in real time toward the output shaft of brushless motor 6, and adjust the spatial position of dynamometer 804 and torque sensor 806 in real time by controlling the first electric slide 801 and two sets of second electric slides 803 so as to keep consistent with the output axis of brushless motor 6, then control the two sets of coupling plates 80706 to have interference fit with the output shaft of brushless motor 6, so as to facilitate the subsequent application of load, which not only avoids the need to use an adapted coupling for connection, but also makes the axis adjustment more efficient, thereby improving the working effect of the test equipment.

[0058] For example, Fig. 9 As shown, the detection and positioning mechanism 9 includes a crossbeam 901; a fourth electric push rod 903 is provided at the bottom center of the crossbeam 901; a first detection plate 904 is transmission-connected to the output end of the fourth electric push rod 903; a plurality of second detection plates 905 are hingedly connected to both sides of each group of the first detection plates 904 in sequence; a plurality of acoustic wave sensors 906 and temperature sensors 907 are distributed in a rectangular array at the bottom of each group of the second detection plates 905 and the first detection plates 904; two groups of second slide grooves 902 are symmetrically opened on both sides of the bottom of the crossbeam 901; a plurality of fifth electric push rods 908 are slidably connected in each group of the second slide grooves 902; the output end of each group of the fifth electric push rods 908 is hinged to the top of the corresponding group of second detection plates 905.

[0059] When performing fatigue aging test on the brushless motor 6, the first detection plate 904 and several groups of second detection plates 905 are driven to descend to corresponding heights by controlling the fourth electric push rod 903 and several groups of fifth electric push rods 908, and then several groups of fifth electric push rods 908 are controlled to drive the corresponding second detection plates 905 to descend separately. Since several groups of fifth electric push rods 908 can slide horizontally in the corresponding second slide grooves 902, the first detection plate 904 and several groups of second detection plates 905 can be wrapped around the outside of the brushless motor in an arc surface. Then, by using several groups of acoustic wave sensors 906 and temperature sensors 907 arranged in an array, the temperature distribution and abnormal sound locations of the brushless motor 6 during operation can be accurately located, thereby improving the detection accuracy of the test equipment.

[0060] By controlling the coupling assembly 807 to reach the output shaft of the brushless motor 6, and then controlling the coupling assembly 807 to position the output axis of the brushless motor 6, and by controlling the first electric slide 801 and the two sets of second electric slides 803, the spatial positions of the dynamometer 804 and the torque sensor 806 are adjusted in real time to keep consistent with the output axis of the brushless motor 6, and then controlling the coupling assembly 807 to have an interference fit with the output shaft of the brushless motor 6, it is convenient for the subsequent application of load, which not only avoids the need to use an adapted coupling for connection work, but also makes the axis adjustment work more efficient, thereby improving the working effect of the test equipment.

[0061] By controlling the fourth electric push rod 903 and several groups of fifth electric push rods 908 to drive the first detection plate 904 and several groups of second detection plates 905 to descend to the corresponding height, and then controlling several groups of fifth electric push rods 908 to drive the corresponding second detection plates 905 to descend separately, since several groups of fifth electric push rods 908 can slide horizontally in the corresponding second slide groove 902, the first detection plate 904 and several groups of second detection plates 905 can be wrapped around the outside of the brushless motor in an arc surface, and then using several groups of acoustic wave sensors 906 and temperature sensors 907 arranged in an array, the temperature distribution and abnormal sound locations of the brushless motor 6 during operation can be accurately located, thereby improving the detection accuracy of the test equipment.

[0062] By controlling the two groups of first translation plates 503 to move to corresponding positions, and then controlling the four groups of telescopic columns 505 to extend and retract to corresponding lengths, and then controlling the rotating plate 507 to drive the first electric push rod 508 to rotate to just above the mounting hole of the brushless motor 6, and then controlling the output end of the first electric push rod 508 to penetrate into the corresponding mounting hole while the top block 509 applies downward pressure to the brushless motor 6, and then controlling the four groups of first electric push rods 508 to stretch in different directions, the brushless motor 6 is fixed, and the fixing stability of the brushless motor 6 can be adjusted in real time during the test work, thereby improving the fixing efficiency and effect of the test equipment.

[0063] When conducting fatigue aging test on the brushless motor 6, first open the two sets of observation doors 4, then control the first motor 16 to drive the first screw rod 15 to rotate, and under the threaded connection relationship between the first screw rod 15 and the first slider 14, the first slider 14 drives the support plate 12 to move toward the outside of the closed structure 2, and then fix the brushless motor 6 on the top of the motor fixing mechanism 5. During this process, personnel can avoid the narrow space in the closed structure 2, and then control the support plate 12 to reset, thereby improving the convenience of fixing the brushless motor 6 of the test equipment.

[0064] Based on the above-mentioned brushless motor fatigue aging test equipment, the embodiment of the present invention further proposes a test method for the brushless motor fatigue test equipment for new energy vehicles. Exemplarily, the test method includes:

[0065] Place the brushless motor on top of the motor mounting mechanism;

[0066] Control the motor fixing mechanism to fix the brushless motor:

[0067] Connect the brushless motor to the power supply through the power quality detector;

[0068] Control the self-positioning load mechanism to automatically position the output axis of the brushless motor and perform the connection work;

[0069] The control detection and positioning mechanism is wrapped around the outside of the brushless motor;

[0070] Start the brushless motor;

[0071] Control the self-positioning load mechanism to gradually increase the load on the brushless motor;

[0072] The power quality detector monitors the voltage and current changes of the brushless motor, and the detection and positioning mechanism monitors the temperature distribution of the brushless motor;

[0073] Completed the fatigue aging test of brushless motor.

[0074] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brushless motor fatigue aging test device, comprising a test platform, characterized in that: The top of the test platform is provided with a motor fixing mechanism; the top of the motor fixing mechanism is provided with a brushless motor; the top of the test platform is provided with a power quality detector; the top of the test platform is provided with a self-positioning load mechanism; The self-positioning load mechanism comprises a first electric slide that provides horizontal displacement capability of the axis; the top of the first electric slide is transmission-connected with a second translation plate for installation; Two sets of second electric slides providing vertical displacement capability of the axis are symmetrically arranged at the two side edges of the top of the second translation plate; a dynamometer for increasing the load of the brushless motor is connected between the two sets of the second electric slides in a vertical transmission direction; two sets of guide posts are symmetrically arranged at the two side edges of the top of the second translation plate; A torque sensor for monitoring torque is slidably connected between the two groups of guide columns in a vertical direction; one end of the torque sensor is transmission-connected to the output end of the dynamometer, and the other end is transmission-connected to a coupling assembly capable of positioning the output axis of the brushless motor.

2. The brushless motor fatigue aging test equipment according to claim 1, characterized in that: A closed structure is provided on the top of the test platform; a temperature control structure is provided on the top of the closed structure; two groups of observation doors are provided on one side wall of the closed structure; a detection and positioning mechanism is provided on the top inner wall of the closed structure; a group of lighting strips are provided on the top of one side wall of each group of observation doors close to the closed structure; a translation groove is provided on the top of the test platform; a support plate is movably penetrated on the inner wall of the translation groove on the side close to the observation door; the motor fixing mechanism is transmission-connected to the top of the support plate.

3. The brushless motor fatigue aging test equipment according to claim 1, characterized in that: The motor fixing mechanism includes a support seat; four groups of movable through grooves are symmetrically opened on the two side walls of the support seat; two groups of first translation plates are arranged in the support seat; each group of the first translation plates is slidably connected in the corresponding two groups of movable through grooves; both ends of each group of the first translation plates extend to the outside of the support seat and are transmission-connected with a group of fixed columns; a group of telescopic columns are movably penetrated on the opposite side walls of the two groups of fixed columns on the same side.

4. The brushless motor fatigue aging test equipment according to claim 3, characterized in that: A group of connecting columns is provided at the top of one end of each group of telescopic columns away from the corresponding group of fixed columns; a group of rotating plates is rotatably connected to the top of each group of connecting columns; a group of first electric push rods is provided at the top of one end of each group of rotating plates away from the corresponding group of connecting columns; the output end of each group of the first electric push rods passes through the corresponding group of rotating plates and is sleeved with a group of top blocks.

5. The brushless motor fatigue aging test equipment according to claim 1, characterized in that: The coupling assembly includes a fixed plate; a second electric push rod is provided on a side wall of the fixed plate away from the torque sensor; a connecting disk is transmission-connected to the output end of the second electric push rod; two groups of mounting plates are symmetrically provided on a side wall of the connecting disk away from the second electric push rod; two groups of third electric push rods are symmetrically provided on the side walls opposite to the two groups of mounting plates.

6. The brushless motor fatigue aging test equipment according to claim 5, characterized in that: The output end of each group of the third electric push rods extends between the two groups of mounting plates and is connected to a group of coupling plates for transmission; the cross-section of each group of the coupling plates is fan-shaped and the inner wall is provided with anti-slip grooves; two groups of arc grooves are symmetrically opened on one side wall of the connecting plate away from the second electric push rod; two groups of rotating rods are symmetrically slidably connected in the two groups of the arc grooves.

7. The brushless motor fatigue aging test equipment according to claim 6, characterized in that: Two groups of distance sensors are symmetrically arranged on one end of the opposite side wall of the two groups of rotating rods away from the connecting disk; an annular cavity is opened in the connecting disk; an internal gear ring is rotatably connected in the annular cavity; the internal gear ring is transmission-connected to the two groups of rotating rods; two groups of guide gears are distributed in an annular array in the annular cavity; each group of guide gears is meshingly connected with the internal gear ring.

8. The brushless motor fatigue aging test equipment according to claim 1, characterized in that: The detection and positioning mechanism includes a crossbeam; a fourth electric push rod is provided at the bottom center of the crossbeam; a first detection plate is transmission-connected to the output end of the fourth electric push rod; and a plurality of second detection plates are hingedly connected to both sides of each group of the first detection plates.

9. The brushless motor fatigue aging test equipment according to claim 8, characterized in that: The bottom of each group of the second detection plates and the first detection plates are provided with a plurality of groups of acoustic wave sensors and temperature sensors distributed in a rectangular array; two groups of second slide grooves are symmetrically opened on both sides of the bottom of the crossbeam; each group of the second slide grooves are slidably connected with a plurality of groups of fifth electric push rods; the output end of each group of the fifth electric push rods is hinged to the top of the corresponding group of second detection plates.

10. A testing method based on the brushless motor fatigue aging testing device according to any one of claims 1 to 9, characterized in that: The test method includes: Place the brushless motor on top of the motor mounting mechanism; Control the motor fixing mechanism to fix the brushless motor: Connect the brushless motor to the power supply through the power quality detector; Control the self-positioning load mechanism to automatically position the output axis of the brushless motor and perform the connection work; The control detection and positioning mechanism is wrapped around the outside of the brushless motor; Start the brushless motor; Control the self-positioning load mechanism to gradually increase the load on the brushless motor; The power quality detector monitors the voltage and current changes of the brushless motor, and the detection and positioning mechanism monitors the temperature distribution of the brushless motor; Completed the fatigue aging test of brushless motor.

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