Linear motor and direct drive motor fault detection method

Abstract

The invention relates to a fault detection method for a linear motor and a direct drive motor, and relates to the technical field of motor fault detection, and the method comprises the steps: S1, moving and unfolding equipment: pushing a bottom wheel moving support assembly of a main box body to a test station, unfolding the wheel moving support assembly, opening a box cover, taking out a built-in main test mechanism, and pulling out detection joints in four test rods; s2, connecting the tested motors: pulling out cables in the test rod, respectively connecting corresponding motor interfaces, completing wiring of the four tested motors according to numbers, and ensuring that the interfaces are not loosened; s3, module pre-detection: checking whether a test module state indicating lamp is normal or not before electrification, turning on a power module switch, and observing automatic starting of a cooling fan; according to the design, mobility, stability, operation accessibility and maintenance convenience are integrated, and on-site deployment and operation processes can be optimized.

Description

Technical Field

[0001] The present application relates to the technical field of motor fault detection, and in particular to a method for detecting faults of linear motors and direct-drive motors. Background Art

[0002] Linear motors have the advantages of simple structure, high positioning accuracy, low noise, and high transmission efficiency; direct-drive motors have the characteristics of high torque, high precision, and fast response. They are widely used in many fields, such as high-precision machine tools, parallel robots, chip processing, laser cutting machines, glass substrate inspection equipment, magnetic levitation trains, etc. Direct-drive motors are often used in robot joints, rotary tables of CNC machine tools, electronic manufacturing equipment, and other occasions with high requirements for precision and response speed. In the prior art, related technologies for motor and motor fault detection can be referred to Chinese patent publication number CN115114565A, which discloses a linear motor fault detection method and system based on big data analysis. The method includes collecting multiple dimensions of operating data of the equipment and classifying them into categories; calculating the contribution of each dimension of data; obtaining the coding interval of each dimension of data; starting with the smallest data in each dimension as the initial symbol to increase the coding interval to obtain the next source symbol, and using the initial symbol as the representative of all data in the interval; sequentially increasing the coding interval to obtain the coding range of the source symbol representing all data in each dimension; calculating the frequency of the source symbol in each dimension; performing Huffman coding to obtain the coding result of each dimension, and transmitting the coding result; decoding the coding result of each dimension to obtain the detection data of each dimension, and performing device fault detection based on the detection data of that dimension. This method solves the problem of lossy data compression, shortens the coding length, and improves the compression transmission efficiency.

[0003] In the process of implementing this application, the inventors discovered that the prior art has the following problems: When a motor or motor is fault-detected, motor fault data is generally obtained through instruments. However, since the motor itself has many fault problems, repeated detection is often required in conjunction with a variety of different types of detection instruments during the detection process. In addition, in order to obtain the fault problem, a variety of detection instruments are used in combination during the detection. When only a single motor or motor is detected, there is no conflict between the multiple instruments. However, when multiple motors and motors need to be tested, data confusion will occur, and the tests will conflict with each other, affecting the detection. In addition, the placement of multiple detection instruments is variable, which may be subject to human interference, resulting in disconnection and other situations. At the same time, this detection method relies on experience and manual judgment. This manual judgment method is highly subjective, and different engineers may come to different conclusions. Summary of the Invention

[0004] The purpose of this application is to provide a linear motor and direct drive motor fault detection method.

[0005] The present application provides a linear motor and direct drive motor fault detection method using the following technical solutions: A method for detecting faults in a linear motor and a direct drive motor comprises the following steps: S1. Move and unfold the equipment: Push the bottom wheel support assembly of the main box to the test station, unfold the wheel support assembly, open the box cover, take out the built-in main test mechanism, and pull out the detection connectors in the four test rods; S2. Connect the motors under test: Pull out the cables inside the test rod and connect them to the corresponding motor interfaces. Connect the four motors under test according to their numbers and ensure that the interfaces are not loose. S3. Module pre-check: Before powering on, check whether the module status indicator is normal, turn on the power module switch, and observe whether the cooling fan starts automatically; S4. Set the motor type and parameters: Select the current test motor model through the human-machine interface of the main test organization, and select the withstand voltage and insulation parameters, resistance test range, turn-to-turn waveform comparison threshold and inductance parameters; S5. First set of motor test: Connect the test rod to the first set of linear motors and the direct drive motor interface, start the test program, and observe the real-time data on the screen; S6. Result determination and processing: If NG: record the fault item, disconnect the test rod, and readjust the motor wiring; If OK: the screen displays green PASS; S7, switch test group: turn off the rocker switch of the test module, disconnect the first set of test rods, and test the detection connector of the second set of test rods to connect to the interface of the second set of motors; S8, the second set of tests and the end: Restart the power supply of the test module, start the test program, the result is OK, the screen displays the final ALL PASS, and the remaining motors are tested in a loop; S9, finishing operations: turn off the power of all modules, stop the cooling fan, retract the cables, and fold the brackets to store the box.

[0006] Preferably, in step S1: push the wheeled support assembly at the bottom of the main box to the test station, unfold the wheeled support assembly, open the main box, pull out the detection joints in the four test rods of the main test mechanism, and the main box drives the main test mechanism inside it to move through the wheeled support assembly. After moving to the specified position, the wheeled support assembly is opened, and the wheeled support assembly is switched from a rotation function to a support function. The wheeled support assembly includes a fixed plate, a support plate is installed above the fixed plate by bolts, a rotating bracket is installed above the support plate by bolts, a frame is rotatably connected to the top of the rotating bracket, the side axis of the frame is rotatably connected to the wheeled wheel, and the frame has a built-in brake.

[0007] By adopting the above technical solution, after the main box is moved into position by the wheeled support assembly, the wheeled support assembly is unfolded to make it stand firmly, and the main box is opened to prepare for testing.

[0008] Preferably, in step S2: at the test location of the motor to be tested, continue to open the main box body, the main box body consists of a main box body and a sub-box body, after opening the main box body, make the adjusted wheel support assembly on the sub-box body contact the ground, expose the total test mechanism in the main box body, and expose the test rod, connect the detection connector in the test rod to the required detection motor in turn, and re-operate to connect the four groups of motors, and the height of the adjusted wheel support assembly is consistent with the height of the main box body, the outer surface of the sub-box body is provided with a snap-fit ​​exoskeleton, and the inside of the snap-fit ​​exoskeleton is provided with a mounting hole.

[0009] By adopting the above technical solution, the main box is completely opened, and after the wheel support assembly is turned into the supporting state, the sub-box is stabilized, and the test wires in the test rod are connected to the four motors respectively in preparation for testing, and there are a snap-fit ​​frame and mounting holes outside the sub-box.

[0010] Preferably, in step S3: start the general test mechanism, check whether the status indicator light of the test module is normal before powering on, turn on the power switch, and observe whether the cooling fan starts automatically.

[0011] By adopting the above technical solution, the main test organization first checks whether the status indicator light is normal before starting up, then powers on the test module, and confirms whether the cooling fan is working normally.

[0012] Preferably, in step S4: the current test motor model is selected through the human-computer interaction interface on the test module, and the withstand voltage and insulation parameters, resistance test range, turn-to-turn waveform comparison threshold and inductance parameters are selected.

[0013] By adopting the above technical solution, the motor type is selected and the specific standard values ​​of each test are set.

[0014] Preferably, in step S5, the test rod is connected to the first set of linear motor and direct drive motor interfaces, through the human-computer interaction interface, and the palm is placed again on the cooling fan on the right side of the main box. At this time, the cooling fan is the exhaust fan, and the cooling fan on the left side of the main box is felt to blow air into the main box. The wind enters the cooling air duct and the separation slot between the main box and the main detection structure, and is extracted by the exhaust fan. Confirm that there is wind blowing out, start the test program, and observe the real-time data on the screen.

[0015] By adopting the above technical solution, connect the first motor and start the test. During the test, pay special attention to whether the cooling fan is working normally, whether the air inlet and outlet are unobstructed, and check the test data on the human-computer interaction interface.

[0016] Preferably, in step S6, if NG, record the fault item, disconnect the test rod, and readjust the motor wiring; if OK, the screen displays green PASS; if the total test mechanism detects distortion, take out the fixing bolts connected to the mounting blocks on both sides of the total test mechanism, and separate the locking buckle from the hook on the support base, take out the main box through the lifting handles on both sides of the total test mechanism, open the outer shell of the total test mechanism, check the power module and several groups of detection modules in the placement cavity of the total test mechanism, and perform inspections. After completing the inspection, assemble the detection modules in sequence along the separation of the blocking frame, and electrically connect the plug-in terminals to the power module and the test module respectively.

[0017] By adopting the above technical solution, different treatments are performed according to the test results: NG requires recording the fault and checking the motor wiring; OK means passing; if there is a suspected problem with the instrument itself, the main test mechanism needs to be disassembled for internal module inspection and repair.

[0018] Preferably, in step S7 and step S8: after completing the detection of the first group of motors, turn off the rocker switch of the test module, disconnect the test rods of the first group, check whether the detection connectors of the second group of test rods are connected to the second group of motor interfaces, and check whether the connection is correct. Restart the power supply of the test module, start the test program, the result is OK, the screen displays the final ALL-PASS, and test the remaining motors in a loop.

[0019] By adopting the above technical solution, after testing one machine, the standby is disconnected, and after the test is completed, the next machine is tested until all four machines are tested.

[0020] Preferably, in step S9: turn off the power switch, reset the human-computer interaction interface, observe whether the cooling fan stops running, retract the detection connector connected to the motor in the test rod in turn, and through the spring spring of the test rod in the placement cavity, retract the cable into the placement cavity, close the main box and the auxiliary box, fold the wheel support assembly, reset the action wheel, and through the handle, ground the action wheel and move it.

[0021] By adopting the above technical solution, all tests are completed, the power is turned off, reset, confirm that the cooling fan has stopped, retract the test line, close the box cover, retract the wheel support assembly and reset the running dynamics, and finally push the equipment away.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The test system is centered around a main enclosure with a wheeled support assembly, achieving highly integrated equipment and convenient mobility. The wheeled support assembly enables rapid transitions between mobile and stable testing states. The wheels touch the ground during mobility, while the tripod deploys to provide stable support during testing. The auxiliary side of the wheels is grounded, ensuring a flat and reliable test platform. The split design of the main and auxiliary enclosures, combined with the deployment of the support assembly, fully exposes the integrated main test mechanism and its four test rods, facilitating quick connection to the motor under test. The main test mechanism itself adopts a modular design and can be removed from the main enclosure for inspection and maintenance using a lifting handle, fixing bolts, and locking buckles, facilitating easy maintenance. This design combines mobility, stability, accessibility, and ease of maintenance, optimizing on-site deployment and operational processes. 2. The system is equipped with a carefully designed cooling duct, consisting of a cooling duct and a separation slot, which cooperates with the cooling fan that enters from the left side of the main cabinet and exits from the right side, forming an effective airflow path to remove heat from key electronic components. Its significant advantage lies in the deep integration of cooling status checks into the standard operating procedures: before power is applied, the status indicator must be checked and the fan automatically started. When starting key test procedures, the operator is required to manually check whether there is air exhaust from the right side to verify the actual effectiveness of the cooling system in real time. This status monitoring mechanism, which combines observation of indicator lights with physical confirmation of wind, far exceeds simple reliance on indicator light alarms. It can effectively prevent equipment overheating, test data drift, or hardware damage caused by insufficient cooling, and can maintain the stability of equipment operation for long-term, high-load withstand voltage and high-current motor testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the overall box structure of an embodiment of the present application; Figure 3 This is a schematic structural diagram of the embodiment of the present application after the main box is opened; Figure 4 This is a schematic diagram of the overall testing mechanism structure of an embodiment of the present application; Figure 5 This is a schematic diagram of the test rod structure of an embodiment of the present application; Figure 6 This is a schematic diagram of the human-computer interaction interface structure of an embodiment of the present application; Figure 7This is a schematic diagram of the power module structure of an embodiment of the present application; Figure 8 This is an embodiment of the present application Figure 6 Schematic diagram of the structure at A in the middle; Figure 9 is a flow chart of an embodiment of the present application; Explanation of the accompanying drawings: 1. Main box body; 2. Wheel support assembly; 201. Fixed plate; 202. Support plate; 203. Rotating bracket; 204. Frame; 205. Moving wheel; 3. Cooling fan; 4. Engaging exoskeleton; 5. Mounting hole; 6. Locking buckle; 7. Main box body; 8. Sub-box body; 9. Separation slot; 10. Main test mechanism; 11. Test rod; 12. Status indicator light; 13. Power switch; 14. Rocker switch; 15. Human-computer interaction interface; 16. Support base; 17. Mounting block; 18. Fixing bolt; 19. Cooling duct; 20. Lifting handle; 21. Power module; 22. Test module; 23. Placement cavity; 24. Plug terminal; 25. Blocking frame; 26. Hook; 27. Detection connector. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 - Attachment Figure 9 , further details of this application are given.

[0025] Embodiment: A method for detecting a fault in a linear motor and a direct drive motor comprises the following steps: S1. Move and unfold the equipment: Push the bottom wheel support assembly 2 of the main box 1 to the test station, unfold the wheel support assembly 2, open the box cover, take out the built-in main test mechanism 10, and pull out the detection connectors 27 in the four test rods 11; S2. Connect the motors under test: Pull out the cables inside the test rod 11 and connect them to the corresponding motor interfaces. Connect the four motors under test according to their numbers and ensure that the interfaces are not loose. S3, module pre-check: before power on, check whether the status indicator 12 of the test module 22 is normal, turn on the power module 21, and observe whether the cooling fan 3 starts automatically; S4. Setting the motor type and parameters: Select the current test motor model through the human-machine interface 15 of the main test organization 10, and select the withstand voltage and insulation parameters, resistance test range, turn-to-turn waveform comparison threshold, and inductance parameters; S5, first group motor test: connect the test rod 11 to the first group of linear motors and the direct drive motor interface, start the test program, and observe the real-time data on the screen; S6. Result determination and processing: If NG: record the fault item, disconnect the test rod 11, and readjust the motor wiring; If OK: the screen displays green PASS; S7, switch test group: turn off the rocker switch 14 of the test module 22, disconnect the first group of test rods 11, and test the detection connector 27 of the second group of test rods 11 to connect to the interface of the second group of motors; S8, the second set of tests and the end: restart the power supply of the test module 22, start the test program, the result is OK, the screen displays the final ALL PASS, and the remaining motors are tested in a loop; S9, closing operation: turn off the power of all modules, stop the cooling fan 3, retract the cables, fold the brackets and close the box Reference Figure 1 In step S1: push the bottom wheeled support assembly 2 of the main box 1 to the test station, unfold the wheeled support assembly 2, open the main box 1, pull out the detection joint 27 in the four test rods 11 of the main test mechanism 10, and the main box 1 drives the main test mechanism 10 inside it to move through the wheeled support assembly 2. After moving to the designated position, the wheeled support assembly 2 is opened, and the wheeled support assembly 2 is switched from the rotation function to the support function. The wheeled support assembly 2 includes a fixed plate 201, and a support plate 202 is installed above the fixed plate 201 by bolts. A rotating bracket 203 is installed above the support plate 202 by bolts. A frame 204 is rotatably connected to the top of the rotating bracket 203, and a side shaft of the frame 204 is rotatably connected to a wheeled wheel, and the frame 204 has a built-in brake.

[0026] Specifically, push the entire box body 1 with the wheeled support assembly 2 to the test position, put down and unfold the wheeled support assembly 2 at the bottom of the box, wherein the engaging exoskeleton 4 on the back of the auxiliary box body 7 is connected to the fixed plate 201 through the mounting hole 5, and the fixed plate 201 is mounted with the support plate 202 by bolts, and the rotating bracket 203 is mounted and fixed by the support plate 202, wherein a locking structure is provided in the rotating bracket 203, and the locking structure consists of a spring engaging part and a locking buckle. The elastic force generated by the deformation of the spring keeps the component in a fixed position to achieve locking. The spring reset drives the locking part to reset and complete the unlocking. Its structure is like the push-type core-ejecting structure of a ballpoint pen, which locks the core through a spring pin. The rotating bracket 203 is connected to the frame 204 through the locking structure, and the frame 204 is connected to the action wheel 205. When it is folded, it is the action wheel 205, which can be moved. When it is unfolded, it is a supporting tripod structure for supporting the auxiliary box 8. The side of the action wheel 205 is grounded to open the main box 1, and the detection connectors 27 at the front ends of the four test rods 11 are pulled out from the main test mechanism 10 in the main box 1.

[0027] Reference Figure 1 、 Figure 2 and Figure 3In step S2: at the test location of the motor to be tested, continue to open the main box 1, which is composed of a main box 7 and a sub-box 8. After the main box 1 is opened, the adjusted wheel support assembly 2 on the sub-box 8 is brought into contact with the ground, exposing the main test mechanism 10 in the main box 7, and the test rod 11. The detection connector 27 in the test rod 11 is connected to the required test motors in turn, and the operation is repeated to connect the four groups of motors. The height of the adjusted wheel support assembly 2 is consistent with the height of the main box 7. The outer surface of the sub-box 8 is provided with a snap-fitting exoskeleton 4, and the interior of the snap-fitting exoskeleton 4 is provided with a mounting hole 5.

[0028] Specifically, the detection connector 27 is connected to the motor to be tested, the main test mechanism 10 and the test rod 11 in the main box 7 are exposed, and the detection connectors 27 of the four test rods 11 are connected to the corresponding interfaces of the four motors to be tested in turn, where the detection connector 27 is arbitrarily selected according to the test subjects, and the order of the test subjects is confirmed.

[0029] Reference Figure 4 and Figure 5 In step S3: start the main test mechanism 10, check whether the status indicator light 12 of the test module 22 is normal before powering on, turn on the power switch 13, and observe whether the cooling fan 3 starts automatically Specifically, check and start heat dissipation before powering on. Before powering on the test motor and motor, check whether the status indicator light 12 of the corresponding test module 22 is normal, turn on the power switch 13, and observe whether the cooling fan 3 starts running automatically.

[0030] Reference Figure 4 and Figure 5 In step S4: through the human-machine interaction interface 15 on the test module 22, the current test motor model is selected, and the withstand voltage and insulation parameters, resistance test range, turn-to-turn waveform comparison threshold and inductance parameters are selected.

[0031] Specifically, the test parameters are set on the human-computer interaction interface 15 of the main test organization 10, the motor model to be tested is selected, the required test parameters, the withstand voltage test voltage and insulation resistance requirements, the resistance test range, the waveform comparison threshold of the inter-turn test, and the inductance parameters are set, and the test indicators are obtained through the human-computer interaction interface 15 of the main test organization 10. The main test organization 10 controls the test module 22 through the core controller. The test module 22 is clustered by the detection module, and each detection item is disassembled into an independent functional module. It is connected to the controller through a bus to achieve plug-and-play. The test modules 22 in the main test organization 10 respectively include a resistance detection module, an inter-turn insulation detection module, an AC / DC withstand voltage module, an insulation resistance module and an inductance detection module.

[0032] Reference Figure 4In step S5, the test rod 11 is connected to the first set of linear motors and direct drive motor interfaces, and the palm is placed again on the cooling fan 3 on the right side of the main box 7 through the human-computer interaction interface 15. At this time, the cooling fan 3 is the exhaust fan, and the cooling fan 3 on the left side of the main box 7 blows the air into the main box 7. The air enters the cooling air duct 19 and the separation slot 9 between the main box 7 and the main detection structure, and is extracted by the exhaust fan. Confirm that there is air blowing out, start the test program, and observe the real-time data on the screen.

[0033] Specifically, perform tests on the first group of motors and motors, and confirm the heat dissipation effect. Connect the first test rod 11 to the first group of motor interfaces, start the test program on the human-computer interaction interface 15, and confirm that the heat dissipation is normal. Use your hand to feel the cooling fan 3 on the right side of the main box 7, which is the air outlet, to see if there is wind blowing out. Confirm whether the cooling fan 3 on the left side of the main box 7, which is the air inlet, is operating normally. The wind will enter the heat dissipation duct 19 and the separation slot 9 between the main box 7 and the main detection mechanism 10, and then be drawn out by the cooling fan 3 at the air outlet end. Then observe the real-time test data and results on the human-computer interaction interface 15.

[0034] Reference Figure 5 and Figure 6 In step S6, if NG, record the fault item, disconnect the test rod 11, and readjust the motor wiring; if OK, the screen displays green PASS; if the main test mechanism 10 detects distortion, remove the fixing bolts 18 connected to the mounting blocks 17 on both sides of the main test mechanism 10, and separate the locking buckle 6 from the hook 26 on the support base 16, remove the main box 7 through the lifting handles 20 on both sides of the main test mechanism 10, open the outer shell of the main test mechanism 10, check the power module 21 and several groups of detection modules in the placement cavity 23 of the main test mechanism 10, and perform inspections. After the inspection is completed, assemble the detection modules in sequence along the separation of the blocking frame 25, and electrically connect the plug terminals 24 to the power module 21 and the test module 22 respectively.

[0035] Specifically, if the test fails NG; record the specific fault items; disconnect the test rod 11 from the motor, check and adjust the motor wiring, then reconnect and test; if the test passes OK; the screen displays green "PASS", if the total test mechanism itself is suspected of failure, remove the fixing bolts 18 and locking buckles 6 that fix the total test mechanism 10, and take the total test mechanism 10 out of the main box 7 through the lifting handle 20, then open the outer shell of the total test mechanism 10, check the power module 21 and each test module 22 placed in the cavity 23 inside, and perform necessary maintenance. After maintenance, assemble the test modules 22 in sequence according to the separation area of ​​the blocking frame 25, and ensure that the plug-in terminals 24 of all modules are correctly connected to the power module 21 and the test module 22.

[0036] Reference Figure 3 、 Figure 4 and Figure 8 In step S7 and step S8: after completing the detection of the first group of motors, turn off the rocker switch 14 of the test module 22, disconnect the first group of test rods 11, check whether the detection connector 27 of the second group of test rods 11 is connected to the second group of motor interfaces, restart the power supply of the test module 22, start the test program, the result is OK, the screen displays the final ALL-PASS, and the remaining motors are tested in a loop.

[0037] Specifically, after the test of the first group of motors is completed: turn off the rocker switch 14 on the main test mechanism 10, specifically the test loop switch; disconnect the first group of test rods 11, check whether the detection connector 27 of the second group of test rods 11 is correctly connected to the interface of the second group of motors, and reopen the power switch 13 of the test module 22 to start the test program. If the result is OK, the screen displays "PASS". Repeat steps S5-S7 to test the third and fourth groups of motors in turn. After all four groups of motors have passed the test, the screen displays the final "ALL-PASS".

[0038] Reference Figure 1 In step S9: turn off the power switch 13, reset the human-machine interface 15, observe whether the cooling fan 3 stops running, retract the detection connector 27 connected to the motor in the test rod 11 in sequence, and retract the cable into the placement cavity through the spring of the test rod 11 in the placement cavity 23, close the main box 7 and the auxiliary box 8, fold the wheel support assembly 2, reset the action wheel 205, and ground the action wheel 205 through the handle to move it.

[0039] Specifically, turn off the power switch 13 and reset the human-machine interface 15. Observe whether all cooling fans 3 have stopped running. Unplug the detection connectors 27 of the test rod 11 from the motor in sequence. The spring inside the test rod 11 will automatically retract the connecting wires into the placement cavity inside the rod. Close the main box 7 and the auxiliary box 8. Fold and retract the wheeled support assembly 2, so that its moving wheels 205 touch the ground and resume the mobile state. Then move the main box 1 away.

[0040] The implementation principle of the embodiment of the present application is as follows: Moving and unfolding equipment: Push the bottom wheeled support assembly 2 of the main box 1 to the test station, unfold the wheeled support assembly 2, open the box cover, take out the built-in main test mechanism 10, and pull out the detection connectors 27 in the four test rods 11; Connect the motors under test: Pull out the cables inside the test rod 11 and connect them to the corresponding motor interfaces. Connect the four motors under test according to their numbers and ensure that the interfaces are not loose. Module pre-check: Before powering on, check whether the status indicator 12 of the test module 22 is normal, turn on the power module 21, and observe whether the cooling fan 3 starts automatically; Set the motor type and parameters: select the current test motor model through the human-machine interface 15 of the main test mechanism 10, and select the withstand voltage and insulation parameters, resistance test range, turn-to-turn waveform comparison threshold and inductance parameters; First set of motor test: Connect the test rod 11 to the first set of linear motors and the direct drive motor interface, start the test program, and observe the real-time data on the screen; Result judgment and processing: If NG: record the fault item, disconnect the test rod 11, and readjust the motor wiring; If OK: the screen displays green PASS; Switch the test group: turn off the rocker switch 14 of the test module 22, disconnect the first group of test rods 11, and test the detection connector 27 of the second group of test rods 11 to connect to the interface of the second group of motors; The second set of tests and the end: Restart the power supply of the test module 22, start the test program, the result is OK, the screen displays the final ALL PASS, and the remaining motors are tested in a loop; Finishing operations: Turn off the power of all modules, stop cooling fan 3, retract the cables, and fold the brackets to store the box.

[0041] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A method for detecting faults in linear motors and direct-drive motors, characterized by: The following steps are involved: S1. Moving and unfolding the equipment: pushing the wheeled support assembly (2) at the bottom of the main box (1) to the test station, unfolding the wheeled support assembly (2), opening the box cover, taking out the built-in main test mechanism (10), and pulling out the detection connectors (27) in the four test rods (11); S2. Connect the motor under test: Pull out the internal cable of the test rod (11) and connect it to the corresponding motor interface. Connect the four motors under test according to the number and ensure that the interface is not loose. S3, module pre-check: before powering on, check whether the status indicator light (12) of the test module (22) is normal, turn on the power module (21), and observe whether the cooling fan (3) starts automatically; S4. Setting the motor type and parameters: Select the current test motor model through the human-machine interface (15) of the main test mechanism (10), and select the withstand voltage and insulation parameters, resistance test range, turn-to-turn waveform comparison threshold and inductance parameters; S5, first group motor test: connect the test rod (11) to the first group of linear motors and the direct drive motor interface, start the test program, and observe the real-time data on the screen; S6. Result determination and processing: If NG: record the fault item, disconnect the test rod (11), and readjust the motor wiring; If OK: the screen displays green PASS; S7, switching the test group: turning off the rocker switch (14) of the test module (22), disconnecting the first group of test rods (11), and detecting the interface where the detection connector (27) of the second group of test rods (11) is connected to the second group of motors; S8, the second set of tests and the end: restart the power supply of the test module (22), start the test program, the result is OK, the screen displays the final ALL PASS, and the remaining motors are tested in a loop; S9, finishing operation: turn off the power of all modules, stop the cooling fan (3), retract the cables, fold the brackets and merge the main box (1).

2. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S1: the wheeled support assembly (2) at the bottom of the main box (1) is pushed to the test station, the wheeled support assembly (2) is unfolded, the main box (1) is opened, and the detection joints (27) in the four test rods (11) of the main test mechanism (10) are pulled out. The main box (1) drives the main test mechanism (10) inside thereof to move through the wheeled support assembly (2). After moving to the designated position, the wheeled support assembly (2) is opened, and the wheeled support assembly (2) is switched from a rotation function to a support function. The wheeled support assembly (2) includes a fixed plate (201), a support plate (202) is installed above the fixed plate (201) by bolts, a rotating bracket (203) is installed above the support plate (202) by bolts, a vehicle frame (204) is rotatably connected to the top of the rotating bracket (203), a side shaft of the vehicle frame (204) is rotatably connected to a wheeled wheel, and a brake is built into the vehicle frame (204).

3. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S2: at the test location of the motor to be tested, the main box (1) is continued to be opened. The main box (1) is composed of a main box (7) and a sub-box (8). After the main box (1) is opened, the wheel support assembly (2) adjusted on the sub-box (8) is brought into contact with the ground, exposing the main test mechanism (10) in the main box (7), and exposing the test rod (11). The detection connector (27) in the test rod (11) is sequentially connected to the required detection motor, and the operation is repeated to connect the four groups of motors. The height of the wheel support assembly (2) adjusted is consistent with the height of the main box (7). The outer surface of the sub-box (8) is provided with a snap-fitting outer frame (4), and the inside of the snap-fitting outer frame (4) is provided with a mounting hole (5).

4. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S3: start the main test mechanism (10), check whether the status indicator light (12) of the test module (22) is normal before powering on, turn on the power switch (13), and observe whether the cooling fan (3) starts automatically.

5. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S4: through the human-machine interaction interface (15) on the test module (22), the current test motor model is selected, and the withstand voltage and insulation parameters, resistance test range, turn-to-turn waveform comparison threshold and inductance parameters are selected.

6. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S5, the test rod (11) is connected to the first set of linear motor and direct drive motor interfaces, and the palm is placed again on the cooling fan (3) on the right side of the main box (7) through the human-machine interaction interface (15). At this time, the cooling fan (3) is an outlet fan, and the cooling fan (3) on the left side of the main box (7) is felt to blow air into the main box (7), and the air enters the cooling air duct (19) and the separation slot (9) between the main box (7) and the general detection structure, and is drawn out by the outlet fan. After confirming that there is air blowing out, the test program is started and the real-time data on the screen is observed.

7. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S6, if NG, record the fault item, disconnect the test rod (11), and readjust the motor wiring; if OK, the screen displays green PASS; if the total test mechanism (10) detects distortion, take out the fixing bolts (18) connected to the mounting blocks (17) on both sides of the total test mechanism (10), and separate the locking buckle (6) from the hook (26) on the support base (16), take out the main box (7) through the lifting handles (20) on both sides of the total test mechanism (10), open the shell of the total test mechanism (10), check the power module (21) and several groups of the detection modules in the placement cavity (23) of the total test mechanism (10), and perform the test. After the test is completed, assemble the detection modules in sequence along the separation of the blocking frame (25), and electrically connect the plug-in terminal (24) to the power module (21) and the test module (22) respectively.

8. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S7 and step S8: after completing the detection of the first group of motors, turn off the rocker switch (14) of the test module (22), disconnect the first group of test rods (11), check whether the detection connector (27) of the second group of test rods (11) is connected to the second group of motor interfaces, and check whether the connection is correct. Restart the power supply of the test module (22), start the test program, the result is OK, the screen displays the final ALL-PASS, and the remaining motors are tested in a loop.

9. A linear motor and direct drive motor fault detection method according to claim 1, characterized in that: In step S9: turn off the power switch (13), reset the human-machine interface (15), observe whether the cooling fan (3) stops running, retract the detection connector (27) connected to the motor in the test rod (11) in sequence, and retract the cable into the placement cavity through the spring of the test rod (11) in the placement cavity (23), close the main box (7) and the auxiliary box (8), fold the wheel support assembly (2), reset the action wheel (205), and ground the action wheel (205) through the handle and move it.

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