Motor testing device

Abstract

The present application discloses a motor testing device, which relates to the field of motor performance testing and improves the problems of cumbersome test operations, long time consumption and inaccurate measurement results. The device includes a manual material placement position, an electric control cabinet, a manual material picking position and a test machine. The test machine includes a base, an upper frame, a mounting plate arranged between the base and the upper frame, and a bearing platform arranged on the mounting plate; the mounting plate is located above the bearing platform and is provided with a clamping assembly for fixing the motor; the mounting plate is provided with a test assembly, and the test assembly includes a rotating shaft, a one-way bearing, a first coupling, a torque sensor, a second coupling and a hysteresis brake which are arranged in sequence along the vertical coaxial axis. The one-way bearing and the first coupling are both arranged on the rotating shaft, the one-way bearing is used to connect the motor shaft, the upper and lower ends of the torque sensor are respectively connected to the first coupling and the second coupling, and the hysteresis brake is connected to the second coupling; the mounting plate is located in the base and is provided with a lifting assembly for controlling the lifting of the test assembly.

Description

Technical Field

[0001] The present application relates to the field of motor performance testing, and in particular to a motor testing device. Background Art

[0002] An electric motor is a machine that converts electrical energy into mechanical energy. It operates based on the principle that a current-carrying conductor moves under force in a magnetic field. The stator windings generate a rotating magnetic field, which acts on the rotor to generate magneto-electrodynamic torque. After assembly, the motor undergoes comprehensive testing to ensure its quality, performance, and safety. This testing is particularly important for motor coaxiality testing.

[0003] At present, the coaxiality test of electric motors generally adopts manual testing methods. Before the test, it is necessary to determine the measurement points first. Usually, the motor shaft end and the bearing seat are selected as the measurement points. Then, measuring tools such as calipers or squares are manually installed on the selected measurement points to ensure that the measuring tools are parallel to the axis. Then, the axial and radial coaxiality deviations are measured and recorded. Finally, the measured data is analyzed, the axial and radial deviations are calculated, and it is determined whether it meets the requirements according to the manufacturing standards.

[0004] With respect to the above-mentioned related technologies, the inventors have found that there are at least the following problems: Manual testing is not only cumbersome to operate, but also time-consuming; in addition, manual reading of measurement data is not accurate, which can easily lead to inaccurate measurement results. Summary of the Invention

[0005] In order to improve the problems of troublesome test operations, long time consumption and inaccurate measurement results, the present application provides a motor testing device.

[0006] This application provides a motor testing device, which adopts the following technical solutions:

[0007] A motor testing device includes a manual material discharge position, an electric control cabinet, a manual material extraction position, and a testing machine, wherein the manual material discharge position and the manual material extraction position are respectively arranged on both sides of the testing machine;

[0008] The test machine includes a base, an upper frame arranged on the base, a mounting plate arranged between the base and the upper frame, and a bearing platform arranged on the mounting plate;

[0009] The support platform is provided with a through hole for the motor shaft to pass through, the through hole is adapted to the size of the motor shaft, and the mounting plate is provided with a test hole communicating with the through hole;

[0010] The mounting plate is located above the bearing platform and is provided with a clamping assembly for fixing the motor;

[0011] The mounting plate is located in the base and is provided with a test assembly. The test assembly includes a rotating shaft arranged vertically, a one-way bearing, a first coupling, a torque sensor, a second coupling and a hysteresis brake arranged in sequence vertically. The one-way bearing, the first coupling, the second coupling and the hysteresis brake are all coaxially arranged with the rotating shaft. The one-way bearing and the first coupling are both arranged on the rotating shaft. The one-way bearing is used to connect to the motor shaft. The upper and lower ends of the torque sensor are respectively connected to the first coupling and the second coupling. The hysteresis brake is connected to the second coupling.

[0012] The mounting plate is located inside the base and is provided with a lifting assembly for controlling the lifting of the test assembly.

[0013] Preferably, the clamping assembly includes a support arranged on the mounting plate, a first cylinder arranged on the support, and a pressure block arranged on the piston rod of the first cylinder, the axis of the piston rod of the first cylinder is arranged vertically, and the pressure block is located directly above the supporting platform; the support is provided with a second cylinder, and the piston rod of the second cylinder is provided with an in-position detection sensor for assisting the pressure block in pressing down.

[0014] Preferably, it also includes a connecting plate arranged on the mounting plate, and the lifting assembly includes a rotating rod rotatably arranged on the connecting plate, a sliding block threadedly connected to the rotating rod, an assembly plate arranged on the sliding block, and a driving member arranged on the connecting plate, the driving member is used to drive the rotating rod to rotate, the rotating shaft is rotatably connected to the assembly plate, the assembly plate is slidably connected to the connecting plate up and down, and the connecting plate is located below the supporting platform.

[0015] Preferably, a shock-absorbing block is provided on the top of the supporting platform, and the shock-absorbing block is provided with a first connecting hole communicating with the through hole; the shock-absorbing block has a certain elasticity; the support includes a column vertically arranged on the mounting plate, and a support plate arranged on the column, and the support plate is for installing the first cylinder and the second cylinder, and an elastic shock-absorbing block is provided between the support plate and the column.

[0016] Preferably, the pressing block is rotatably connected to a grab hook, and there are at least three grab hooks that are spaced apart on the pressing block. A hooking platform for hooking the motor is provided at one end of the grab hook away from the pressing block, and the hooking platform is provided with a guide surface for the motor to abut and push the grab hook to rotate outward.

[0017] Preferably, a support block is provided between the supporting platform and the shock-absorbing block, and the support block is penetrated by a second connecting hole connected to the through hole; positioning rods are arranged at intervals on the support block, and the motor is provided with a connecting ring which is sleeved on the positioning rod, and the connecting ring and the grab hook are vertically staggered with each other.

[0018] Preferably, a shock absorber is provided between the support block and the bearing platform, and the shock absorber includes a connecting bolt passing through the support block and the bearing platform, a connecting nut threadedly connected to the connecting bolt, a gasket sleeved on the connecting bolt, and a first elastic gasket and a second elastic gasket sleeved on the connecting bolt. The gasket is elastic and is located between the first gasket and the second gasket, and the support block and the bearing platform are located between the first gasket and the second gasket.

[0019] Preferably, a noise testing assembly is provided on the mounting plate near the supporting platform, and the noise testing assembly includes a horizontal cylinder provided on the mounting plate, a vertical cylinder provided on the horizontal cylinder, a fixed plate provided on the vertical cylinder, and a noise detection sensor provided on the fixed plate. During detection, the noise detection sensor needs to be in contact with the surface of the motor.

[0020] Preferably, both sides of the upper frame are connected with lifting doors that slide up and down respectively, and the two lifting doors are respectively located near the manual loading position and the manual taking position. The upper frame is provided with a lifting cylinder for controlling the lifting doors to slide up and down.

[0021] In summary, this application has at least one of the following beneficial effects:

[0022] During the test, the motor is placed on the shock-absorbing block. The first cylinder is used to drive the pressure block down to press the motor. The electric control cabinet then supplies power to the motor. The noise detection sensor is used to contact the surface of the motor to test the noise of the motor. After the test is passed, the noise detection sensor is driven by the horizontal cylinder and the vertical cylinder to separate the motor. The test component is driven upward by the lifting component until the motor shaft is inserted into the one-way bearing. The electric control cabinet is used to control the start of the motor to rotate the motor shaft, and the torque is transmitted through the one-way bearing and the first coupling. The torque sensor is used for detection and the measured data is transmitted back to the electric control cabinet. That is, the load test is controlled by PID to ensure that the motor shaft, the hysteresis brake and the torque sensor are in the same straight line. If the test is passed, the material level is manually taken out and the next motor test can be carried out. This improves the problems of cumbersome test operation, long time consumption and inaccurate measurement results.

[0023] 2. When testing the noise level of the motor during operation, use the lifting assembly to control the movement of the test assembly so that the test assembly located below the mounting plate cannot rise to avoid interfering with the rotation of the motor shaft;

[0024] 3. The motor is mounted vertically using a support platform and shock-absorbing blocks, so that the motor shaft is oriented vertically. Compared to the test method of horizontally mounting the motor, the test method in this application can reduce horizontal vibration interference from the ground, which helps to improve the accuracy of the test.

[0025] 4. After the test is completed, the pressure block is driven upward by the first cylinder to drive the grab hook to move the motor upward, so that the motor shaft of the tested motor is sequentially separated from the one-way bearing, the through hole and the first connecting hole, thereby avoiding the problem that the motor shaft collides with other structural components when the motor is directly taken out manually, resulting in the axis position of the motor shaft that has passed the test being offset. When the motor shaft is directly above the shock-absorbing block, the manual material removal position can remove the motor, and the manual loading position can also load the next motor. The two actions are performed simultaneously without interfering with each other, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of this embodiment of the present application;

[0027] Figure 2 This is a structural diagram of the clamping assembly and the supporting platform of this embodiment of the present application located on the mounting plate;

[0028] Figure 3 This is a structural diagram of the motor of this embodiment of the present application located on a supporting platform;

[0029] Figure 4 This is a schematic structural diagram of the clamping assembly of this embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the structure of the test assembly of this embodiment of the present application located inside the base;

[0031] Figure 6 This is a structural diagram of the test assembly, the carrier platform, and the clamping assembly assembled on the mounting plate in this embodiment of the present application;

[0032] Figure 7 This is a schematic diagram of the structure of the test assembly of this embodiment of the present application;

[0033] Figure 8 This is a structural diagram of the lifting door of this embodiment of the present application located on the upper frame;

[0034] Figure 9 It is a structural diagram of the noise testing component of this embodiment of the present application.

[0035] Description of reference numerals: 1, electric control cabinet; 2, test machine; 21, base; 22, mounting plate; 221, test hole; 23, upper frame; 24, carrier; 241, through hole; 3, manual feeding position; 4, manual material taking position; 5, support block; 51, second connection hole; 52, positioning rod; 521, limiting block; 6, shock absorber; 61, connecting bolt; 62, connecting nut; 63, gasket; 64, first elastic washer; 65, second elastic washer; 7, connecting ring; 8, shock block; 81, first connection hole; 9, clamping component; 91, support; 911, column; 912, support plate; 913, shockproof block; 92, first cylinder; 93, pressing block; 931, relief opening; 932, guide rod; 933, hook; 9331, hooking platform; 9332, guide surface; 10, second cylinder; 11, test component; 111, rotating shaft; 112, one-way bearing; 113, first coupling; 114, torque sensor; 1141, L-shaped plate; 1142, sponge block; 115, second coupling; 116, hysteresis brake; 1161, L-shaped plate; 12, lifting component; 121, connecting plate; 122, rotating rod; 123, assembly plate; 124, driving part; 13, noise test component; 131, horizontal cylinder; 1311, connecting plate; 132, vertical cylinder; 133, fixing plate; 134, noise detection sensor; 14, lifting door; 141, lifting cylinder; 15, safety light curtain. Detailed implementation manners

[0036] The following further elaborates on this application with reference to the Figure 1-9 accompanying drawings.

[0037] Referring to Figure 1 , a motor testing device disclosed in an embodiment of this application includes an electric control cabinet 1, a test machine 2 located in front of the electric control cabinet 1, and a manual feeding position 3 and a manual material taking position 4 located on the left and right sides of the electric control cabinet 1 respectively. From the layout perspective, the manual feeding position 3 and the manual material taking position 4 are respectively on both sides of the test machine 2 to facilitate loading and unloading.

[0038] Referring to Figure 1 and Figure 2 , the test machine 2 includes a base 21, a mounting plate 22 installed on the top of the base 21, an upper frame 23 installed on the top of the mounting plate 22, and a carrier 24 fixed on the top of the mounting plate 22. Among them, the carrier 24 and the mounting plate 22 are fixedly connected by bolts. The carrier 24 is generally in a "C" - shaped structure, and a through hole 241 for the motor shaft to pass through is penetrated through the top of the carrier 24, and the through hole 241 is adapted to the size of the motor shaft. A test hole 221 is penetrated through the mounting plate 22 at the position of the carrier 24, and the test hole 221 communicates with the through hole 241.

[0039] Referring to Figure 2 and Figure 3 Furthermore, the top of the carrier 24 is detachably connected to a support block 5, which is generally a cube structure. The top of the support block 5 is penetrated by a second connecting hole 51 that communicates with the through hole 241, allowing the motor shaft to pass through.

[0040] Reference Figure 2 and Figure 3 A shock absorber 6 is provided between the support block 5 and the bearing platform 24 to alleviate the vibration generated by the motor and reduce the impact on the motor test. There are four shock absorbers 6, which are spaced apart at the corners of the support block 5. The shock absorber 6 includes a connecting bolt 61 passing through the support block 5 and the bearing platform 24, a connecting nut 62 threadedly connected to the top of the connecting bolt 61, a gasket 63 sleeved on the connecting bolt 61, a first elastic washer 64, and a second elastic washer 65. Among them, the gasket 63 is made of rubber or copper sheet and has a certain elasticity. The gasket 63 is located between the support block 5 and the bearing platform 24 to block the transmission of vibration. The first elastic washer 64 adopts a non-opening structure, and the second elastic washer 65 adopts an open structure. The support block 5 and the bearing platform 24 are located between the first elastic washer 64 and the second elastic washer 65; during installation, the bottom of the connecting nut 62 abuts against the top of the first elastic washer 64, and the bottom of the first elastic washer 64 abuts against the top of the support block 5; through this installation method, while ensuring the reliability of the connection between the bearing platform 24 and the support block 5, it can also perform a shock-absorbing effect to prevent excessive vibration of the motor from affecting the test results, thereby ensuring the accuracy of the test.

[0041] Reference Figure 2 and Figure 3 The top of the support block 5 is located near the second connection hole 51 and is spaced apart by three positioning rods 52. The bottom ends of the positioning rods 52 are threadedly connected to the support block 5. The positioning rods 52 are coaxially mounted with limit blocks 521 to support the motor, thereby reducing contact between the motor and the support block 5, thereby reducing the transmission of vibrations during motor operation to the mounting plate 22. Three connecting rings 7 are fixed to the bottom end of the motor, and the positions of the connecting rings 7 correspond to the positions of the positioning rods 52. When installing the motor, the connecting rings 7 are sleeved onto the positioning rods 52 to achieve the positioning installation and horizontal limitation of the motor.

[0042] Reference Figure 2 and Figure 3In addition, a shock-absorbing block 8 is installed on the top of the support block 5 at the second connecting hole 51 to alleviate the vibration generated by the motor to further ensure the reliability and accuracy of the test. The shock-absorbing block 8 is made of rubber or plastic material and has a certain deformation ability. A clearance hole is passed through the middle position of the shock-absorbing block 8. When the motor is not placed on the shock-absorbing block 8, the top of the shock-absorbing block 8 is located above the top of the positioning rod 52. The top of the shock-absorbing block 8 is located near the second connecting hole 51 and is passed through by a first connecting hole 81, and the first connecting hole 81 and the through hole 241 are interconnected.

[0043] Reference Figure 2 and Figure 4 Furthermore, the mounting plate 22 is located above the supporting platform 24 and is provided with a clamping assembly 9 for fixing the motor. The clamping assembly 9 includes a support 91 provided on the top of the mounting plate 22, a first cylinder 92 located on the support 91, and a pressure block 93 detachably connected to the piston rod of the first cylinder 92. Among them, the support 91 includes a column 911 installed on the top of the mounting plate, a support plate 912 vertically fixed to the top of the column 911, and the support plate 912 is for the installation of the first cylinder 92. In addition, a shockproof block 913 is installed between the support plate 912 and the column 911 to prevent the vibration of the motor from being transmitted to the mounting plate 22, thereby avoiding affecting the test results. The shockproof block 913 is made of rubber or plastic material and has a certain elasticity.

[0044] Reference Figure 4 The axial direction of the piston rod of the first cylinder 92 is arranged vertically, and the pressure block 93 is fixed to the bottom end of the piston rod of the first cylinder 92 by bolts. In addition, a clearance opening 931 is passed through the middle of the pressure block 93 to increase the contact area with the top of the motor. The pressure block 93 is always located directly above the shock-absorbing block 8 to better press down and fix the motor. Two guide rods 932 are also fixed to the top of the pressure block 93, which are respectively slidably connected to the support plate 912. The axial direction of the guide rod 932 is set along the sliding direction of the pressure block 93. The support 91 is located at the support plate 912 and the second cylinder 10 is installed. The bottom end of the piston rod of the second cylinder 10 is installed with an in-position detection sensor (not shown in the figure) to assist the pressure block 93 in pressing down and locking the motor, thereby ensuring the stability of the motor during testing. When the pressing block 93 presses down the motor, it indirectly squeezes the shock absorbing block 8, causing the shock absorbing block 8 to deform; when the motor is in a fixed state, the bottom of the in-position detection sensor abuts against the top of the motor, and a certain distance is still left between the motor and the support block 5.

[0045] Reference Figure 4In addition, the pressing block 93 includes a connecting block mounted on the top of the pressing block 93. The connecting block is rotatably connected to a grab hook 933. The grab hook 933 is generally arc-shaped, and one end of the grab hook 933 is connected to the connecting block by an axial hinge. After the test is completed, it can be used to lift the motor upward to remove the material. In the embodiment of the present application, there are three grab hooks 933, which are generally spaced apart on the pressing block 93. The positions of the grab hooks 933 and the connecting ring 7 are vertically offset. In addition, the three grab hooks 933 can be regarded as three points that are not on the same straight line, so a unique circle can be determined, and the center of the circle always remains coincident with the axis of the motor shaft when the grab hook 933 grabs the motor. When the three grab hooks 933 are used to grab the motor and move it upward, a more stable support structure can be formed. During the upward movement, the motor can be prevented from shaking or vibrating, ensuring that the motor shaft does not collide with other components, thereby ensuring that the axis position of the motor shaft that has passed the test will not shift.

[0046] Reference Figure 4 In addition, a hooking platform 9331 for hooking the motor is fixed to the end of the hook 933 away from the pressure block 93. The hooking platform 9331 is provided with a guide surface 9332 for the motor to abut against and push the hook 933 to rotate outward. When the pressure block 93 presses down to fix the motor, the guide surface 9332 abuts against the side wall of the motor, causing the hook 933 to rotate outward and open, so that the pressure block 93 abuts the top of the motor. When the pressure block 93 is pressed against the motor, the hooking platform 9331 is located between the motor and the support block 5, and a certain gap is left between the bottom end of the hooking platform 9331 and the support block 5 to prevent the motor's own vibration from being transmitted to the mounting plate 22 through the hook 933 during operation, thereby ensuring the reliability of the test.

[0047] Reference Figure 5 and Figure 6 Furthermore, a test assembly 11 is provided at the bottom of the mounting plate 22 in the base 21 for detecting the coaxiality of the motor. The test assembly 11 includes a rotating shaft 111 arranged vertically, a one-way bearing 112, a first coupling 113, a torque sensor 114, a second coupling 115 and a hysteresis brake 116 arranged in sequence vertically. The one-way bearing 112, the first coupling 113, the second coupling 115 and the hysteresis brake 116 are all arranged coaxially with the rotating shaft 111. When testing the coaxiality of the motor, a PID-controlled load test is performed to ensure that the motor shaft, the hysteresis brake 116 and the torque sensor 114 are in the same straight line. If the test is qualified, the motor can be removed.

[0048] Reference Figure 6 and Figure 7In this embodiment, only one rotating shaft 111 is used, which avoids the increased angular deviation that would result from multiple rotating shafts 111. Furthermore, the rotating shaft 111 in this application is made of 7075 aluminum, which reduces the load increased by the heavy material, thereby ensuring the accuracy of the test results. The one-way bearing 112 is used to connect to the motor shaft. During use, the motor shaft's rotation direction does not need to be considered and can be inserted and rotated at will, improving the practicality of the test.

[0049] Reference Figure 6 and Figure 7 Both the first coupling 113 and the second coupling 115 utilize rigid couplings, ensuring minimal angular deviation during rotation, thereby ensuring accurate test results. The upper and lower ends of the torque sensor 114 are fixedly connected to the first coupling 113 and the second coupling 115, respectively, to prevent angular deviation after installation on the assembly plate 123. The top end of the hysteresis brake 116 is connected to the bottom end of the second coupling 115.

[0050] Reference Figure 6 and Figure 7 A lifting assembly 12 is provided at the bottom of the mounting plate 22, which is used to control the lifting and lowering of the test assembly 11. The lifting assembly 12 comprises a connecting plate 121 fixed to the bottom of the mounting plate 22, a rotating rod 122 rotatably connected to the connecting plate 121, a sliding block (not shown) threadedly connected to the rotating rod 122, an assembly plate 123 mounted on the side of the sliding block away from the connecting plate 121, and a driving member 124 mounted on the side of the connecting plate 121 away from the assembly plate 123. The connecting plate 121 is generally L-shaped, with its length running vertically. The top of the connecting plate 121 is fixed to the mounting plate 22 near the test hole 221. The sliding block is generally square, with one side of the sliding block abutting against the sidewall of the connecting plate 121. The rotating rod 122 is also axially arranged vertically. Bearing blocks are mounted on both ends of the connecting plate 121, with the sidewalls of the rotating rod 122 fixedly connected to the inner ring of the bearing blocks.

[0051] Reference Figure 6 and Figure 7 , a bearing seat is also installed on the side of the assembly plate 123 away from the connecting plate 121, for the rotational connection of the rotating shaft 111. The two sides of the assembly plate 123 are connected to the connecting plate 121 for up and down sliding through linear guides. An L-shaped plate 1161 is fixed on the side of the assembly plate 123 away from the connecting plate 121 for the installation of the hysteresis brake 116. An L-shaped plate 1141 is installed on the assembly plate 123 near the torque sensor 114. There are two L-shaped plates 1141, which are respectively located on both sides of the torque sensor 114. A sponge block 1142 is installed on the side of the L-shaped plate 1141 near the torque sensor 114 to prevent the torque sensor 114 from generating noise due to vibration.

[0052] Reference Figure 6and Figure 7 The driving member 124 is a driving motor. The motor shaft of the driving motor and the end of the rotating rod 122 away from the one-way bearing 112 are coaxially fixed with pulleys, and the transmission is carried out between the two pulleys through a belt.

[0053] Reference Figure 8 and Figure 9 In addition, before testing the coaxiality of the motor, the noise test of the motor is performed first. Therefore, a noise testing assembly 13 is provided on the mounting plate 22 near the supporting platform 24. The noise testing assembly 13 includes a horizontal cylinder 131, a vertical cylinder 132, a fixing plate 133, and a noise detection sensor 134 installed on the top of the fixing plate 133 away from the vertical cylinder 132. Among them, the horizontal cylinder 131 is assembled on the top of the mounting plate 22 and is located near the test hole 221. A connecting plate 1311 is installed on the piston rod of the horizontal cylinder 131, and the bottom of the vertical cylinder 132 is installed on the connecting plate 1311. The piston rod of the vertical cylinder 132 is fixedly connected to the fixing plate 133. After the noise detection sensor 134 is installed on the fixing plate 133, the side wall of the noise detection sensor 134 protrudes from the side of the fixing plate 133 away from the vertical cylinder 132, so as to facilitate detection after touching the side wall of the motor. In addition, the support platform 24 and the support block 5 are respectively provided with escape holes near the fixing plate 133, so that the fixing plate 133 can be moved to adjust the position of the noise detection sensor 134. It should be noted that when testing the noise, the test assembly 11 cannot be raised to avoid interfering with the rotation of the motor shaft.

[0054] Reference Figure 8 and Figure 9 Furthermore, to ensure the motor testing environment is within a relatively sealed space, lift gates 14 are slidably connected to the left and right sides of the upper frame 23. These two lift gates 14 correspond to the manual loading and unloading positions 4, respectively. A lift cylinder 141 is mounted near the top of the upper frame 23. The piston rod of lift cylinder 141 is fixedly connected to the bottom end of lift gate 14, and one lift cylinder 141 is installed for each lift gate 14.

[0055] Reference Figure 8 and Figure 9 Additionally, safety light barriers 15 (with built-in transmitters and receivers) are mounted on the left and right sides of the upper frame 23 for protection. Based on the photoelectric effect, when a hand reaches into the upper frame 23 through the safety light barriers 15, the light is blocked from reaching the receivers, and the safety light barriers 15 output a stop signal, protecting the operator.

[0056] The implementation principle of the motor testing device in the embodiment of the present application is as follows:

[0057] During testing, the motor is first placed on the damping block 8 at the manual loading position. The motor shaft is sequentially inserted into the first connecting hole 81, the second connecting hole 51, the through hole 241, and the test hole 221. The connecting ring 7 on the motor is then inserted into the positioning column to limit the motor's horizontal position. The first and second cylinders 92 and 10 are activated to drive the pressure block 93 and the in-position detection sensor downward. During this process, the guide surface 9332 on the hooking platform 9331 contacts the motor and rotates outward until the pressure block 93 contacts the top of the motor. At this point, the bottom of the motor contacts the top of the limiting block 521, the hooking platform 9331 is located between the motor and the support block 5, and the damping block 8 is squeezed by the motor and deformed to a certain extent.

[0058] Then, connect the reserved plug in the upper frame 23 connected from the electric control cabinet 1 to the plug on the motor and power on. After starting the motor, the noise test can be carried out. The lifting cylinder 141 controls the lifting door 14 to descend, so that the motor is in a relatively closed environment for testing. It should be noted that before the noise test is completed, the test assembly 11 located below the mounting plate 22 cannot rise to avoid interfering with the rotation of the motor shaft. Before starting the motor, the horizontal cylinder 131 and the vertical cylinder 132 adjust the position of the noise detection sensor 134 in turn so that the side wall of the noise detection sensor 134 abuts against the side wall of the motor, and then start the motor to detect whether the noise during the operation of the motor is qualified. If qualified, the horizontal cylinder 131 and the vertical cylinder 132 drive the noise detection sensor 134 away from the motor, and then proceed to the next step of the coaxiality test of the motor.

[0059] Next, the drive motor is started, and the rotating rod 122 is rotated via the pulley and belt, thereby driving the one-way bearing 112 and other test components 11 to rise until the top of the one-way bearing 112 is sleeved on the motor shaft, thus achieving the connection between the one-way bearing 112 and the motor shaft. The motor is started, and the load test is carried out through PID control to ensure that the motor shaft, the hysteresis brake 116, and the torque sensor 114 are on the same straight line. After the test (multiple tests can be performed), the first cylinder 92 drives the pressure block 93 to move upward. At the same time, the three grabbers 933 on the pressure block 93 grab the motor and move it upward synchronously until the motor shaft is completely separated from the shock absorber block 8. During this process, the force applied to the shock absorber block 8 decreases, and the shock absorber block 8 recovers under its own elasticity, which is conducive to pushing the motor shaft out of the one-way bearing 112 and preventing the three grabbers 933 from shaking or vibrating during the process of grabbing the motor and moving it upward.

[0060] Finally, the lifting cylinder 141 controls the lifting door 14 to open, and the manual material removal position 4 removes the motor from the grab hook 933, while the manual material loading position loads the material. The two actions can be performed simultaneously without affecting each other, thereby improving the test efficiency.

[0061] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A motor testing device, characterized in that: It comprises a manual material discharge position (3), an electric control cabinet (1), a manual material taking position (4), and a test machine (2), wherein the manual material discharge position (3) and the manual material taking position (4) are respectively arranged on both sides of the test machine (2); The testing machine (2) comprises a base (21), an upper frame (23) arranged on the base (21), a mounting plate (22) arranged between the base (21) and the upper frame (23), and a supporting platform (24) arranged on the mounting plate (22); The support platform (24) is provided with a through hole (241) through which the motor shaft passes, the through hole (241) being adapted to the size of the motor shaft, and the mounting plate (22) is provided with a test hole (221) communicating with the through hole (241); The mounting plate (22) is located above the supporting platform (24) and is provided with a clamping assembly (9) for fixing the motor; The mounting plate (22) is located in the base (21) and is provided with a test assembly (11). The test assembly (11) includes a rotating shaft (111) arranged vertically, a one-way bearing (112) arranged in sequence vertically, a first coupling (113), a torque sensor (114), a second coupling (115) and a hysteresis brake (116). The one-way bearing (112), the first coupling (113), the second coupling (115) and the hysteresis brake (116) are all arranged coaxially with the rotating shaft (111). The one-way bearing (112) and the first coupling (113) are both arranged on the rotating shaft (111). The one-way bearing (112) is used to connect to the motor shaft. The upper and lower ends of the torque sensor (114) are respectively connected to the first coupling (113) and the second coupling (115). The hysteresis brake (116) is connected to the second coupling (115). The mounting plate (22) is located inside the base (21) and is provided with a lifting assembly (12) for controlling the lifting of the test assembly (11); The clamping assembly (9) includes a support (91) arranged on the mounting plate (22), a first cylinder (92) arranged on the support (91), and a pressure block (93) arranged on the piston rod of the first cylinder (92), wherein the axis of the piston rod of the first cylinder (92) is arranged vertically, and the pressure block (93) is located directly above the supporting platform (24); the support (91) is provided with a second cylinder (10), and the piston rod of the second cylinder (10) is provided with an in-position detection sensor for assisting the pressure block (93) in pressing downward; A shock-absorbing block (8) is provided on the top of the bearing platform (24), and the shock-absorbing block (8) is provided with a first connecting hole (81) communicating with the through hole (241); the shock-absorbing block (8) has a certain elasticity; the support (91) includes a column (911) vertically arranged on the mounting plate (22), and a support plate (912) arranged on the column (911), the support plate (912) is for mounting the first cylinder (92) and the second cylinder (10), and an elastic shock-absorbing block (913) is provided between the support plate (912) and the column (911); The pressing block (93) is rotatably connected to a grab hook (933), and there are at least three grab hooks (933) arranged at intervals on the pressing block (93). An end of the grab hook (933) away from the pressing block (93) is provided with a hooking platform (9331) for hooking the motor, and the hooking platform (9331) is provided with a guide surface (9332) for the motor to abut and push the grab hook (933) to rotate outward. A support block (5) is provided between the bearing platform (24) and the shock-absorbing block (8), and a second connecting hole (51) communicating with the through hole (241) is passed through the support block (5); positioning rods (52) are provided at intervals on the support block (5), and the motor is provided with a connecting ring (7) sleeved on the positioning rod (52), and the connecting ring (7) and the grab hook (933) are vertically staggered with each other.

2. The motor testing device according to claim 1, characterized in that: The lifting assembly (12) further comprises a connecting plate (121) arranged on the mounting plate (22), wherein the lifting assembly (12) comprises a rotating rod (122) rotatably arranged on the connecting plate (121), a sliding block threadedly connected to the rotating rod (122), an assembly plate (123) arranged on the sliding block, and a driving member (124) arranged on the connecting plate (121), wherein the driving member (124) is used to drive the rotating rod (122) to rotate, the rotating shaft (111) is rotatably connected to the assembly plate (123), the assembly plate (123) is slidably connected to the connecting plate (121) up and down, and the connecting plate (121) is located below the supporting platform (24).

3. The motor testing device according to claim 1, characterized in that: A shock-absorbing member (6) is provided between the support block (5) and the bearing platform (24), and the shock-absorbing member (6) comprises a connecting bolt (61) passing through the support block (5) and the bearing platform (24), a connecting nut (62) threadedly connected to the connecting bolt (61), a washer (63) sleeved on the connecting bolt (61), a first elastic washer (64) and a second elastic washer (65) sleeved on the connecting bolt (61), the washer (63) is elastic and is located between the first washer and the second washer, and the support block (5) and the bearing platform (24) are located between the first washer and the second washer.

4. The motor testing device according to claim 1, characterized in that: The mounting plate (22) is provided with a noise testing assembly (13) located near the supporting platform (24). The noise testing assembly (13) includes a horizontal cylinder (131) provided on the mounting plate (22), a vertical cylinder (132) provided on the horizontal cylinder (131), a fixing plate (133) provided on the vertical cylinder (132), and a noise detection sensor (134) provided on the fixing plate (133). During detection, the noise detection sensor (134) needs to be in contact with the surface of the motor.

5. The motor testing device according to claim 4, characterized in that: Lifting doors (14) are connected to both sides of the upper frame (23) in a manner that allows them to slide up and down. The two lifting doors (14) are respectively located near a manual loading position and a manual unloading position (4). The upper frame (23) is provided with a lifting cylinder (141) for controlling the lifting doors (14) to slide up and down.

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