An all-in-one motor performance tester

Abstract

The present invention relates to the technical field of motor performance testing, and more specifically, to an all-in-one motor performance testing machine, comprising a base, on which is mounted a silent part capable of maintaining a low noise level in the test environment; a detection part located in the silent part is mounted on the base, and a sealing part for sealing the silent part is mounted on the silent part; a support part is provided on one side of the base, a pushing part located in the silent part is mounted on the base, a movable bearing part is mounted on the pushing part, and a bearing part mounted on the supporting part is mounted on the bearing part. This device can effectively ensure the low noise level of the silent room itself, the equipment sways with the noise reduction feet, the consistency between the robot and the test equipment, and the bearing part adopts a double stroke, which further reduces the volume of the device and further saves the floor space of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of motor performance testing, and more particularly to an all-in-one motor performance testing machine. Background Art

[0002] The core management elements of electric air outlets in new energy vehicles cover the following five aspects: the first is temperature control to maintain a pleasant and comfortable environment in the car; the second is the air volume adjustment function, which aims to meet the personalized needs of various passengers; thirdly, the noise suppression mechanism is also indispensable, aiming to reduce the noise interference generated during operation; in addition, the air filtration system is equally important, which can effectively ensure the freshness and health of the air in the car; finally, energy consumption control is also a key link, which improves energy utilization by optimizing battery efficiency.

[0003] With the increasing popularity of electric air vents, traditional manual production lines are unable to meet the product consistency requirements of end customers. Therefore, air vent manufacturers have invested in fully automated assembly lines to complete the assembly process, and the final performance test also needs to be completed fully automatically. As the name suggests, unlike traditional air vents, the new air vents have multiple motors for automatic adjustment. End customers have requirements for testing motor noise and the relationship between motor rotation angle and the opening and closing angle of the air vent blades.

[0004] Therefore, we proposed an all-in-one motor performance tester to solve the above problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an all-in-one motor performance tester to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an all-in-one motor performance tester, comprising a base, on which is installed a silent part capable of maintaining a low noise level in the test environment; a detection part in the silent part is installed on the base, and a closing part for closing the silent part is installed on the silent part; a supporting part is provided on one side of the base, a pushing part in the silent part is installed on the base, a movable bearing part is installed on the pushing part, and a carrying part mounted on the supporting part is installed on the bearing part.

[0007] In a preferred embodiment, the silent component includes a first silent room installed on the base, a second silent room located inside the first silent room is installed on the base, the first silent room and the second silent room are filled with foam cotton and sound-absorbing cotton, a first silent door is installed on the first silent room, a second silent door is installed on the second silent room, the second silent door is located on one side of the first silent door, a first delivery port is provided on both the first silent room and the second silent room, an extended silent shell is fixedly connected to the side wall of the first silent room, the extended silent shell is located on one side of the first silent room, and the extended silent shell is fixedly connected to the base, and a second delivery port matching the first delivery port is provided on the extended silent shell.

[0008] In a preferred embodiment, the detection part includes a first profile located in a second silent room, a first mounting plate matching it is installed on the first profile, a first camera is fixedly connected to the first mounting plate, a second profile is installed on the first profile, a second mounting plate matching it is installed on the second profile, a second camera is installed on the second mounting plate, a third profile is installed on the base, a third mounting plate matching it is installed on the third profile, a third camera is installed on the third mounting plate, the first profile and the third profile are symmetrically arranged, and the first profile, the second profile and the third profile form a U-shape, and a microphone is installed on the second profile.

[0009] In a preferred embodiment, the closing member includes a group of first guide rails fixedly connected to the side walls of the first silent room and the second silent room, respectively, and movable plates are slidably connected to the two groups of first guide rails. A closing frame is fixedly connected to the two movable plates, and the two closing frames are respectively located on one side of the first conveying port and the second conveying port, one of the closing frames is located between the extended silent shell and the first silent room, and the other closing frame is located inside the second silent room. A group of support blocks are installed on the side walls of the first silent room and the second silent room, and both groups of support blocks are installed with electric telescopic rods connected to the two closing frames, one group of electric telescopic rods is located between the first silent room and the extended silent shell, and the other group of electric telescopic rods is located inside the second silent room.

[0010] In a preferred embodiment, the support member includes a support base arranged on one side of the base, a support frame is installed on the support base by screws, two symmetrical extension blocks are installed on the support frame, and two limit rollers are rotatably connected to the two extension blocks, a support block is installed on the support frame, and two support rollers are installed on the support block, the two support rollers are placed vertically, and multiple limit rollers are placed horizontally, a baffle is installed on the support frame, the baffle is L-shaped, and two buffers are installed on the side wall of the baffle.

[0011] In a preferred embodiment, the carrying member includes a carrying plate placed on a support frame, a notch is provided in the middle position of the carrying plate, a plurality of guide blocks are fixedly connected to the lower end surface of the carrying plate, a heavy-load connector is installed on the carrying plate, the width of the carrying plate is consistent with the spacing between the two limiting rollers, and the supporting rollers can effectively support the carrying plate.

[0012] In a preferred embodiment, the supporting member includes a supporting plate fixedly connected to the mounting plate, a first electric plug is installed on the supporting plate, a plurality of supporting rods are installed on the supporting plate, a plurality of supporting blocks are installed on the supporting plate, the supporting plate is fixedly connected to the swing cylinder, a plurality of clamping columns are installed at the output end of the swing cylinder, a linear cylinder is installed on the supporting plate, and a second electric plug matching it is installed on the linear cylinder.

[0013] In a preferred embodiment, the pushing member includes a working support platform fixedly connected to the base, the working support platform is in the second silent room, a cylinder is installed on the working support platform, two second guide rails are installed on the working support platform, the two second guide rails are slidably connected with a third guide rail matching them, the side walls of the two third guide rails are fixedly connected with the same cross bar, the output end of the cylinder is connected to the cross bar, and the two guide blocks are respectively slidably connected to the two third guide rails, so that the carrying plate can be effectively supported, and two pulleys are rotatably connected to the side wall of one of the third guide rails, the two pulleys are connected by belt transmission, and the belt is fixedly connected with a movable support block connected to the carrying plate.

[0014] In a preferred embodiment, the electrical performance test of the motor performance tester includes the following steps:

[0015] Step S1: Start the electronic device, initialize the device and apply PWM power supply, and set the control parameters by adjusting the power duty cycle;

[0016] Step S2: Starting the motor to rotate forward or reverse, and after the motor has finished running, collecting voltage feedback on the electrical plug through the PLC analog quantity to determine whether the voltage matches the preset position. More specifically, the motor is rotated forward or reversed at voltages of 2.5V, 0.3V, and 4.7V, respectively. The voltage value of the voltage test can be expanded to other preset voltage combinations. At the same time, the voltage feedback is collected and the position is determined.

[0017] Step S3: The real-time image of the motor is collected by the camera, and compared with the preset standard position image to determine whether the result is OK or NG;

[0018] Step S4: If it is determined to be NG, the number of failures is recorded. If the number of failures exceeds 3, the test process is adjusted. If the number of failures is ≤ 3, only the data is recorded without adjusting the process.

[0019] Acoustic testing includes the following steps:

[0020] Step S1: driving the motor through PWM power supply, and determining the upper limit position and the lower limit position by using the motor stall;

[0021] Step S2: While the motor is running, the sound signal in the noise box is collected through a microphone, converted into an electrical signal, and transmitted to the industrial computer via a preamplifier and a dynamic signal acquisition card. The microphone is fixed directly above the workpiece being measured, and the sensor shielded cable is used to suppress external signal interference. The signal processing module includes a preamplifier, a dynamic signal acquisition card, and sound pressure level analysis software.

[0022] Step S3: Analyze the total sound pressure level through the industrial computer software and compare it with the preset threshold to determine whether the workpiece is OK or NG;

[0023] Step S4: Displaying the time domain spectrum, the sound pressure level-time curve spectrum and the test results on the display in real time.

[0024] In a preferred embodiment, the system further comprises: a PWM power supply module: for power supply and duty cycle adjustment;

[0025] PLC controller: used to collect voltage feedback and control the motor direction;

[0026] Camera module: used for image acquisition and comparative analysis;

[0027] Microphone array and signal processing module: used for acoustic signal collection and conversion;

[0028] Industrial computer and display: used for data analysis and graph visualization. The built-in software of the industrial computer supports customized voltage test sequences and acoustic threshold settings.

[0029] Technical effects and advantages of the present invention:

[0030] This device can effectively ensure the noise floor of the silent room itself. The equipment shakes with the noise reduction feet, and the robot is consistent with the test equipment. The support adopts a double stroke, which further reduces the volume of the device and further saves the floor space of the device. At the same time, the device is equipped with a visual acquisition system for the correspondence between the motor crank angle and the blade, which further ensures the accuracy of the detection. At the same time, the noise is collected through the microphone to further detect the noise of the motor. The setting of the silent box can ensure the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the present invention from a first perspective;

[0033] Figure 3 It is a schematic diagram of the partial internal connection structure of the present invention;

[0034] Figure 4 This is a schematic diagram of a first partial exploded connection structure of the present invention;

[0035] Figure 5 This is a schematic diagram of a second partially exploded connection structure of the present invention;

[0036] Figure 6 It is a schematic diagram of a partial cross-sectional connection structure in the present invention;

[0037] Figure 7 Schematic diagram of the local connection structure of the detection element in the present invention;

[0038] Figure 8 Schematic diagram of the partial connection structure of the closure member in the present invention;

[0039] Figure 9 Schematic diagram of the connection structure of the closure member in the present invention;

[0040] Figure 10 Schematic diagram of the connection structure of the support member, the mounting member, the bearing member and the pushing member in the present invention;

[0041] Figure 11 for Figure 10 A side view schematic diagram of the connection structure;

[0042] Figure 12 for Figure 10 Schematic diagram of the local decomposition connection structure;

[0043] Figure 13 Schematic diagram of the connection structure of the bearing member;

[0044] Figure 14 It is a schematic diagram of the partially exploded connection structure of the carrying member, the supporting member and the pushing member in the present invention.

[0045] The accompanying drawings are denoted as follows: 1 base;

[0046] 2 mute member, 21 first mute room, 22 first mute door, 23 second mute room, 24 second mute door, 25 extended mute housing, 26 first delivery port, 27 second delivery port;

[0047] 3 detection member, 31 first profile, 32 first mounting plate, 33 first camera, 34 second profile, 35 second mounting plate, 36 second camera, 37 third profile, 38 third mounting plate, 39 third camera;

[0048] 4 closing member, 41 first guide rail, 42 movable plate, 43 closing frame, 44 support block, 45 electric telescopic rod;

[0049] 5 support member, 51 support base, 52 support frame, 53 extension block, 54 limit roller, 55 support block, 56 support roller, 57 baffle, 58 buffer;

[0050] 6 mounting member, 61 mounting plate, 62 guide block, 63 heavy-duty connector;

[0051] 7 bearing member, 71 bearing plate, 72 first electrical plug, 73 bearing rod, 74 bearing block, 75 swing cylinder, 76 pressing column, 77 linear cylinder, 78 second electrical plug;

[0052] 8 pushing member, 81 working support platform, 82 cylinder, 83 second guide rail, 84 third guide rail, 85 pulley, 86 belt, 87 moving support block. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0054] Reference Figure 1 、 Figure 2 and Figure 3 A motor performance test all-in-one machine includes a base 1. It is particularly noteworthy that a shock-absorbing foot is installed at the lower end of the base 1, so that the entire device can be shock-absorbing while ensuring the bottom noise of the quiet room itself. Moreover, as the equipment shakes with the noise-reducing foot, the robot and the test equipment can achieve consistency.

[0055] Reference Figure 3 、 Figure 4 and Figure 5, a silent part 2 is integrally installed on the base 1, and the silent part 2 includes a first silent room 21 installed on the base 1, and a second silent room 23 is installed on the base 1 and is located inside the first silent room 21, wherein the space between the first silent room 21 and the second silent room 23 is filled with foam and sound-absorbing cotton, a first silent door 22 is installed on the first silent room 21, and a second silent door 24 is installed on the second silent room 23, and the second silent door 24 is located on one side of the first silent door 22. It is particularly noteworthy that the first silent door 22 It is rotatably connected to the first silent room 21 through hinges, and a lock is installed on the first silent door 22, which can further fix the first silent door 22 on the first silent room 21. It is particularly noteworthy that the connection structure between the first silent door 22 and the first silent room 21 is consistent with the connection structure between the second silent door 24 and the second silent door 23. This is the existing technology and will not be elaborated here. It is particularly noteworthy that the first silent door 22 and the second silent door 24 are inspection doors, which further facilitates inspection by staff.

[0056] Reference Figure 3 、 Figure 4 and Figure 5 At the same time, the first silent room 21 and the second silent room 23 are both provided with a first conveying port 26, and an extended silent shell 25 is fixedly connected to the side wall of the first silent room 21. The extended silent shell 25 is located on one side of the first silent room 21, and the extended silent shell 25 is fixedly connected to the base 1. The extended silent shell 25 is provided with a second conveying port 27 that matches the first conveying port 26. It is particularly noteworthy that the motor can enter the second silent room 23 through the first conveying port 26 and the second conveying port 27, so as to facilitate effective detection of the motor in the later stage, and the setting of the first silent room 21, the second silent room 23 and the extended silent shell 25 can effectively ensure the quietness of the motor during the re-detection process, ensure the accuracy of the motor detection, and indirectly improve the practicality of the device.

[0057] Reference Figure 6 and Figure 7, a detecting component 3 is installed on a base 1 and located in a second soundproof room 23. The detecting component 3 includes a first profile 31 located in the second soundproof room 23. A first mounting plate 32 matching the first profile 31 is installed on the first profile 31. A first camera 33 is fixedly connected to the first mounting plate 32. A second profile 34 is installed on the first profile 31. A second mounting plate 35 matching the second profile 34 is installed on the second profile 34. A second camera 36 is installed on the second mounting plate 35. A third profile 37 is installed on the base 1. A third mounting plate 38 matching the third profile 37 is installed on the third profile 37. A third camera 39 is installed on the third mounting plate 38. It should be noted that notch openings are provided on the first profile 31, the second profile 34 and the third profile 37, and tension blocks are provided in the notch openings. The tension blocks are respectively connected to the first mounting plate 32, the second mounting plate 35 and the third mounting plate 38. When the staff needs to move the first mounting plate 32, the second mounting plate 35 and the third mounting plate 38, they only need to move the first mounting plate 32, the second mounting plate 35 and the third mounting plate 38 to adjust the positions of the cameras. At this time, the staff pulls the first mounting plate 32, the second mounting plate 35 and the third mounting plate 38 outwards, so that the tension blocks can be tightly stuck in the notch openings, thereby achieving the purpose of limiting, further avoiding the movement of the cameras. When movement is needed, push the first mounting plate 32, the second mounting plate 35 and the third mounting plate 38 again, and the first mounting plate 32, the second mounting plate 35 and the third mounting plate 38 can be released from the limit, further facilitating the staff to move the positions of the cameras. It should be particularly noted that the first profile 31 and the third profile 37 are symmetrically arranged. At the same time, the first profile 31, the second profile 34 and the third profile 37 form a '冂'-shaped structure. A microphone is installed on the second profile 34, and the microphone collects the noise during rotation. Whether the noise is qualified is analyzed and compared through software. The cameras take pictures at each position respectively, and whether the positions are qualified is judged through visual comparison. While the electrical performance is detected, the microphone is also collecting the system noise. After the test, the system draws the noise and voltage curves, and compares them with the standard sample again to determine whether the product is qualified.

[0058] Refer to Figure 8 and Figure 9, a closing member 4 is installed on the silent member 2, and the closing member 4 includes a group of first guide rails 41 fixedly connected to the side walls of the first silent room 21 and the second silent room 23 respectively, and a movable plate 42 is slidably connected to the two groups of first guide rails 41, and a closing frame 43 is fixedly connected to the two movable plates 42. It is particularly noteworthy that the closing frame 43 includes a mounting frame and a silent door, and the movable plate 42 is connected to the mounting frame, wherein a plurality of cylinders are mounted on the mounting frame, and the output ends of the plurality of cylinders are respectively connected to the silent doors. When the closing frame moves to a suitable position, the cylinder works, which enables the silent door to fit on the first conveying port 26 and the second conveying port 27, thereby further playing a sealing role. It is particularly noteworthy that the two silent doors are respectively connected to the first conveying port 26 and the second conveying port There is a certain distance between the delivery ports 27, so the cylinder needs to be pushed to make the silent door fit on the first delivery port 26 and the second delivery port 27, and the two closed frames 43 are respectively on one side of the first delivery port 26 and the second delivery port 27. It is particularly noteworthy that one of the closed frames 43 is between the extended silent shell 25 and the first silent room 21, and the other closed frame 43 is inside the second silent room 23. A group of support blocks 44 are installed on the side walls of the first silent room 21 and the second silent room 23, and both groups of support blocks 44 are installed with electric telescopic rods 45 connected to the two closed frames 43. One group of electric telescopic rods 45 is between the first silent room 21 and the extended silent shell 25, and the other group of electric telescopic rods 45 is inside the second silent room 23.

[0059] Reference Figure 10 、 Figure 11 and Figure 12 A support member 5 is provided on one side of the base 1. The support member 5 includes a support base 51 provided on one side of the base 1. A support frame 52 is installed on the support base 51 by screws. Two symmetrical extension blocks 53 are installed on the support frame 52. Two limiting rollers 54 are rotatably connected to the two extension blocks 53. A support block 55 is installed on the support frame 52. Two supporting rollers 56 are installed on the support block 55. It is particularly noteworthy that the two supporting rollers 56 are placed vertically, while the multiple limiting rollers 54 are placed horizontally. A baffle 57 is installed on the support frame 52. The baffle 57 is L-shaped. Two buffers 58 are installed on the side wall of the baffle 57. It is particularly noteworthy that the buffer 58 has the purpose of limiting the carrying plate 61, which further avoids the problem of excessive movement of the carrying plate 61.

[0060] Reference Figure 11 and Figure 12A carrying member 6 is placed on the support member 5, and the carrying member 6 includes a carrying plate 61 placed on the support frame 52. A notch is provided in the middle position of the carrying plate 61, and a plurality of guide blocks 62 are fixedly connected to the lower end surface of the carrying plate 61. A heavy-duty connector 63 is installed on the carrying plate 61. It is particularly noteworthy that the width of the carrying plate 61 is consistent with the spacing between the two limiting rollers 54, and the supporting rollers 56 can effectively support the carrying plate 61, further ensuring the stability of the carrying plate 61; the heavy-duty connector facilitates later expansion connection and can facilitate the device to test multiple products.

[0061] Reference Figure 12 and Figure 13 , a carrier 7 is installed on the carrier 6, and the carrier 7 includes a carrier plate 71 fixedly connected to the carrier plate 61, and a first electric plug 72 is installed on the carrier plate 71. The first electric plug 72 includes a tilted pushing cylinder, and a matching mounting bracket is installed on the pushing cylinder, and an electric plug is installed on the mounting bracket. When the object is placed on the carrying rod 73 and the carrying block 74, the pushing cylinder works at this time, so that the electric plug can be inserted into the object, and the object can be further tested. A plurality of carrying rods 73 are installed on the carrying plate 71. It is particularly noteworthy that the plurality of carrying rods 73 are a plurality of long carrying rods and a plurality of short carrying rods. A plurality of carrying blocks 74 are installed on the carrying plate 71, and the plurality of carrying blocks 74 and the plurality of carrying rods 73 The motor can be supported and limited. The supporting plate 71 is fixedly connected to the swing cylinder 75. The output end of the swing cylinder 75 is equipped with a plurality of clamping posts 76. When the motor is placed on the supporting block 74 and the supporting rod 73 by the robot arm, the swing cylinder 75 works accordingly, which can make the clamping posts 76 rotate and move downward, so that the motor can be limited. At the same time, a linear cylinder 77 is installed on the supporting plate 71, and a second electric plug 78 matching it is installed on the linear cylinder 77. It is more important to note that a movable mounting bracket is installed on the linear cylinder 77, and the second electric plug 78 is installed on the mounting bracket, which further facilitates the staff to insert the second electric plug 78 into the object to ensure the detection of the object.

[0062] Reference Figure 12 and Figure 14, a pusher 8 is installed on the base 1, and the pusher 8 is in the second silent room 23, the pusher 8 includes a work support platform 81 fixedly connected to the base 1, the work support platform 81 is in the second silent room 23, a cylinder 82 is installed on the work support platform 81, and two second guide rails 83 are installed on the work support platform 81, and the two second guide rails 83 are slidably connected to the third guide rail 84 matching therewith. It is particularly noteworthy that the two second guide rails 83 are slidably connected to the slider matching therewith, and the two sliders are respectively connected to the two third guide rails 84. The two third guide rails 84 are connected, and the side walls thereof are fixedly connected with the same cross bar, and the output end of the cylinder 82 is connected with the cross bar, and the two guide blocks 62 are respectively slidably connected with the two third guide rails 84, so that the carrying plate 61 can be effectively supported. Two pulleys 85 are rotatably connected to the side wall of one of the third guide rails 84, and the two pulleys 85 are connected by a belt 86. A movable support block 87 connected to the carrying plate 61 is fixedly connected to the belt 86. It is particularly noteworthy that the structure here is consistent with the driving principle of the double-stroke mechanism.

[0063] Starting an electronic device: Initializing the device

[0064] Apply voltage (via PWM power supply) → Set control parameters (adjust power duty cycle) → Start motor (forward / reverse)

[0065] Wait for the motor to complete → read the voltage feedback (collect the voltage feedback on the electrical plug through the PLC analog quantity) → determine the voltage and position

[0066] - Camera detection (by comparing the real-time image with the preset master calibration part's standard position image) → result judgment (OK / NG)

[0067] -If NG: Record the failure and adjust the process based on the number of failures (>3 times / <3 times).

[0068] Split voltage test

[0069] ElecB test: Perform the following steps at 2.5V, 0.3V, and 4.7V (can be written at different voltages):

[0070] - Apply voltage → Motor rotates forward / reverse → Wait for completion

[0071] -Read voltage feedback → Determine position → Camera detection → Result determination (OK / NG)

[0072] -If NG: trigger the motor to rotate in the reverse direction → retest → record the number of failures.

[0073] Acoustic testing

[0074] The motor is powered by PWM and the upper limit position is determined by the motor stalling; the motor rotates in the reverse direction until it reaches the lower limit stalling position;

[0075] During the operation of the motor, the sound of the motor rotation is collected by a microphone measurement system placed above the product inside the noise box; the sound is converted into an electrical signal by the sensor, and then passed through the preamplifier and the sensor shielded cable.

[0076] The signal dynamic acquisition card and the built-in software of the industrial computer determine whether the workpiece is OK or NG by setting the total sound pressure level threshold of the product. The industrial computer is connected to an external display to display the time domain spectrum (see the example below) and the curve spectrum of the product running time and sound pressure level.

[0077] In the present invention, when the device starts to be used, the robotic arm places the workpiece to be measured on the carrier 7. At this time, the carrier block 74 and the carrier rod 73 can support the workpiece to be measured, and then the swing cylinder 75 is started, so that the clamping column 76 can move downward, and further the workpiece to be measured can be limited, further avoiding the deviation of the workpiece to be measured, and then the pushing cylinder in the first electric plug 72 works, so that the first electric plug 72 can be inserted into the workpiece to be measured, and at this time the linear cylinder 77 also works, so that the second electric plug 78 can be inserted into the workpiece to be measured, thereby completing the installation and positioning of the workpiece to be measured.

[0078] Then the cylinder 82 works at this time. When the cylinder 82 works, the third guide rail 84 can be moved accordingly, so that the carrying plate 61 can be moved. With the assistance of the pulley 85 and the belt 86, the carrying plate 61 and the third guide rail 84 can be retracted to the top of the work support table 81, and the material can also be put into the second silent box 23. At this time, the electric telescopic rod 45 works accordingly, which can make the closed frame 43 move on the first guide rail 41, so that the two closed frames 43 can be respectively located on one side of the first conveying port 26 and the second conveying port 27, wherein the closed frame 42 is installed There are multiple cylinders, and the output ends of the multiple cylinders are respectively connected to the silent door. When the closed frame moves to the appropriate position, the cylinder works, so that the silent door can fit on the first conveying port 26 and the second conveying port 27, further playing the role of a closed silent box. Then the workpiece to be measured is started, and then the camera and microphone are started. It is particularly noteworthy that the three cameras are at multiple angles of the workpiece to be measured, which can improve the accuracy of the test. At the same time, the microphone is above the workpiece to be measured, which can improve the accuracy of the device's noise detection of the workpiece to be measured, meeting the user's needs.

[0079] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0080] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0081] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor performance tester, characterized in that: The test apparatus comprises a base (1), on which a mute member (2) capable of maintaining a low noise level in the test environment is mounted; The silent part (2) includes a first silent room (21) installed on the base (1), a second silent room (23) located inside the first silent room (21) is installed on the base (1), foam cotton and sound-absorbing cotton are filled between the first silent room (21) and the second silent room (23), a first silent door (22) is installed on the first silent room (21), a second silent door (24) is installed on the second silent room (23), the second silent door (24) is located on one side of the first silent door (22), a first delivery port (26) is provided on both the first silent room (21) and the second silent room (23), an extended silent shell (25) is fixedly connected to the side wall of the first silent room (21), the extended silent shell (25) is located on one side of the first silent room (21), and the extended silent shell (25) and the base (1) are fixedly connected, and a second delivery port (27) matching the first delivery port (26) is provided on the extended silent shell (25); A detection member (3) located in the silent member (2) is mounted on the base (1), and a closing member (4) for closing the silent member (2) is mounted on the silent member (2); A support member (5) is provided on one side of the base (1), and the support member (5) comprises a support frame (52) and a support roller (56); A pushing member (8) in the mute member (2) is mounted on the base (1), a movable bearing member (7) is mounted on the pushing member (8), and a carrying member (6) mounted on the support member (5) is mounted on the carrying member (7); The carrying member (6) includes a carrying plate (61) placed on the support frame (52), a notch is provided in the middle of the carrying plate (61), a plurality of guide blocks (62) are fixedly connected to the lower end surface of the carrying plate (61), a heavy-duty connector (63) is installed on the carrying plate (61), the width of the carrying plate (61) is consistent with the spacing between the two limiting rollers (54), and the supporting rollers (56) can effectively support the carrying plate (61); The bearing member (7) includes a bearing plate (71) fixedly connected to the carrying plate (61), a first electric plug (72) is installed on the bearing plate (71), a plurality of bearing rods (73) are installed on the bearing plate (71), a plurality of bearing blocks (74) are installed on the bearing plate (71), the bearing plate (71) is fixedly connected to a swing cylinder (75), a plurality of pressing columns (76) are installed at the output end of the swing cylinder (75), a linear cylinder (77) is installed on the bearing plate (71), and a second electric plug (78) matching the linear cylinder (77) is installed on the linear cylinder (77); The pushing member (8) includes a working support platform (81) fixedly connected to the base (1), the working support platform (81) is located in the second silent room (23), a cylinder (82) is installed on the working support platform (81), two second guide rails (83) are installed on the working support platform (81), and the two second guide rails (83) are slidably connected to the third guide rails (84) that match them, and the side walls of the two third guide rails (84) are fixedly connected to the same cross bar, the output end of the cylinder (82) is connected to the cross bar, and the two guide blocks (62) are respectively slidably connected to the two third guide rails (84), so that the carrying plate (61) can be effectively supported, and two pulleys (85) are rotatably connected to the side wall of one of the third guide rails (84), and the two pulleys (85) are connected by a belt (86) for transmission, and the belt (86) is fixedly connected to a movable support block (87) connected to the carrying plate (61).

2. The motor performance tester according to claim 1, characterized in that: The detection member (3) includes a first profile (31) in a second silent room (23), a first mounting plate (32) matching the first profile (31) is mounted on the first profile (31), a first camera (33) is fixedly connected to the first mounting plate (32), a second profile (34) is mounted on the first profile (31), a second mounting plate (35) matching the first profile (34) is mounted on the second profile (34), a second camera (36) is mounted on the second mounting plate (35), a third profile (37) is mounted on the base (1), a third mounting plate (38) matching the first profile (37) is mounted on the third profile (37), a third camera (39) is mounted on the third mounting plate (38), the first profile (31) and the third profile (37) are symmetrically arranged, and the first profile (31), the second profile (34) and the third profile (37) form a U-shape, and a microphone is mounted on the second profile (34).

3. The motor performance tester according to claim 1, characterized in that: The closure member (4) comprises a set of first guide rails (41) respectively fixedly connected to the side walls of the first silent room (21) and the second silent room (23), a movable plate (42) being slidably connected to the two sets of first guide rails (41), a closure frame (43) being fixedly connected to the two movable plates (42), and the two closure frames (43) being respectively located on one side of the first conveying port (26) and the second conveying port (27), and one of the closure frames (43) being located between the extended silent housing (25) and the first silent room (21). ), another closed frame (43) is located inside the second silent room (23), a group of support blocks (44) are installed on the side walls of the first silent room (21) and the second silent room (23), and both groups of support blocks (44) are installed with electric telescopic rods (45) connected to the two closed frames (43), one group of electric telescopic rods (45) is located between the first silent room (21) and the extended silent housing (25), and the other group of electric telescopic rods (45) is located inside the second silent room (23).

4. The motor performance tester according to claim 1, characterized in that: The support member (5) includes a support base (51) arranged on one side of the base (1), a support frame (52) is installed on the support base (51) by screws, two symmetrical extension blocks (53) are installed on the support frame (52), and two limit rollers (54) are rotatably connected to the two extension blocks (53), a support block (55) is installed on the support frame (52), and two support rollers (56) are installed on the support block (55), the two support rollers (56) are placed vertically, and the multiple limit rollers (54) are placed horizontally, and a baffle (57) is installed on the support frame (52), the baffle (57) is L-shaped, and two buffers (58) are installed on the side wall of the baffle (57).

5. The motor performance tester according to any one of claims 1 to 4, characterized in that: The electrical performance test of the motor performance tester includes the following steps: Step S1: Start the electronic device, initialize the device and apply PWM power supply, and set the control parameters by adjusting the power duty cycle; Step S2: Starting the motor to rotate forward or reverse, and after the motor has finished running, collecting voltage feedback on the electrical plug through the PLC analog quantity to determine whether the voltage matches the preset position. More specifically, the motor is rotated forward or reversed at voltages of 2.5V, 0.3V, and 4.7V, respectively. The voltage value of the voltage test can be expanded to other preset voltage combinations. At the same time, the voltage feedback is collected and the position is determined. Step S3: The real-time image of the motor is collected by the camera, and compared with the preset standard position image to determine whether the result is OK or NG; Step S4: If it is determined to be NG, the number of failures is recorded. If the number of failures exceeds 3, the test process is adjusted. If the number of failures is ≤ 3, only the data is recorded without adjusting the process. Acoustic testing includes the following steps: Step S1: driving the motor through PWM power supply, and determining the upper limit position and the lower limit position by using the motor stall; Step S2: While the motor is running, the sound signal in the noise box is collected through a microphone, converted into an electrical signal, and transmitted to the industrial computer via a preamplifier and a dynamic signal acquisition card. The microphone is fixed directly above the workpiece being measured, and the sensor shielded cable is used to suppress external signal interference. The signal processing module includes a preamplifier, a dynamic signal acquisition card, and sound pressure level analysis software. Step S3: Analyze the total sound pressure level through the industrial computer software and compare it with the preset threshold to determine whether the workpiece is OK or NG; Step S4: Displaying the time domain spectrum, the sound pressure level-time curve spectrum and the test results on the display in real time; PWM power supply module: used for power supply and duty cycle adjustment; PLC controller: used to collect voltage feedback and control the motor direction; Camera module: used for image acquisition and comparative analysis; Microphone array and signal processing module: used for acoustic signal collection and conversion; Industrial computer and display: used for data analysis and graph visualization. The built-in software of the industrial computer supports customized voltage test sequences and acoustic threshold settings.

Images