An autonomous maintenance assembly line system for traction motors of EMUs

Abstract

The present invention discloses an autonomous maintenance assembly line system for traction motors of EMUs, including a pulsating assembly line digital control module, a workstation intelligent operation terminal module, a stator-rotor automatic assembly module, a free automatic measurement module, a bearing insulation and pressure monitoring module, a sensor electrical insulation detection module, an intelligent tool cabinet and a torque wrench module, and a traction motor digital maintenance management dashboard module. The present invention solves the problems of low maintenance efficiency, crossover, inversion and low automation in the maintenance process during the assembly of traction motors. The motor disassembly adopts traditional manual operation, and the efficiency and accuracy are difficult to meet the actual maintenance needs. The maintenance data is scattered and not conducive to query. The maintenance efficiency and maintenance quality of traction motors are improved.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance of traction motors of EMUs, and in particular to an autonomous maintenance assembly line system for traction motors of EMUs. Background Art

[0002] As the core power component of EMUs, traction motors have extremely high requirements for assembly accuracy, component cleanliness, insulation level, etc. during the maintenance process. The current fixed-point maintenance method of motors is inefficient due to the cumbersome operation process and can no longer meet the dual requirements of DC and efficiency in maintenance operations. At present, the maintenance of traction motors in railway systems still has the following problems:

[0003] The maintenance process is crossed, inverted, and has a low degree of automation. The motor disassembly is done by traditional manual labor, and the efficiency and precision cannot meet the actual maintenance needs. After disassembly, the motor end cover, motor rotor and other accessories are currently transported back and forth by an overhead crane, which is not only unsafe but also reduces the maintenance efficiency.

[0004] The layout is not reasonable. The working environment is poor, the layout is messy, and there is a lack of process allocation and fixed management. The storage of materials and accessories is unreasonable. It is necessary to optimize the process flow and make rational use of the production site through the assembly line layout.

[0005] The key processes are inefficient and lack quality control. For example, there is a lack of effective means to control the amount of oil injected into the bearing cover and the manual torque matching process, which easily leads to missed and repeated punching, and lacks process control records. This is not conducive to quality improvement and subsequent quality prosecution.

[0006] It is difficult to implement key process standards such as stator and rotor assembly and clearance measurement in the final assembly. The stator and rotor assembly is assembled by an overhead crane with manual centering, and the clearance measurement is performed after the stator and rotor are assembled. This process is controlled by an overhead crane, which has a large fluctuation range and is difficult to meet the maintenance efficiency and assembly process accuracy requirements.

[0007] The amount of data to be reported during the maintenance process is large, and management and traceability are difficult. Each step of the traction motor maintenance process requires paper reporting and manual video recording and preservation. With the increase in the number of motors to be repaired, the large amount of data reporting and management has led to an urgent need to increase the amount of data, making it impossible to conduct quality analysis and process adjustments through data.

[0008] In summary, there is an urgent need for an autonomous maintenance assembly line system for EMU traction motors to realize assembly line operation and intelligent maintenance of traction motors, record the quality data of the maintenance process throughout, improve the maintenance quality, and realize the full life management of traction motors. Summary of the invention

[0009] The purpose of the present invention is to provide an autonomous maintenance assembly line system for traction motors of EMUs to solve the problems raised in the above-mentioned background technology.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] An EMU traction motor autonomous maintenance assembly line system, comprising:

[0012] The pulsating assembly line digital control module is used to realize that each process can independently control the forward, backward, stop and other actions of the assembly line of this process, and to link with the upper and lower processes;

[0013] The workstation intelligent operation terminal module is used to control the execution process, time, and quality of each process, and to record and save the operation data and video of the entire process;

[0014] Stator and rotor automatic assembly module, used to realize automatic disassembly and assembly of the stator and rotor of the traction motor;

[0015] Free automatic measurement module, used to achieve high-precision automatic clearance measurement of traction motors;

[0016] Bearing insulation and pressure monitoring module, used to realize digital control and real-time data monitoring of bearing heating and pressure equipment;

[0017] Sensor electrical insulation detection module, used to realize complex electrical insulation automatic monitoring of multiple sensors;

[0018] Intelligent tool cabinet and torque wrench module, used to realize the automatic transmission of real-time torque data and real-time status positioning management of tools;

[0019] The digital maintenance management dashboard module for traction motors is used to realize digital and three-dimensional production management of assembly line, helping managers to dynamically control the data of assembly line production process and guide the formulation of motor maintenance production plans.

[0020] Furthermore, the pulsating assembly line digital control module includes an assembly line, which is a three-party structure connected end to end. The assembly line adopts a double-speed chain assembly line. The assembly line is logically controlled by a PLC control program. Each workstation can be controlled individually and can be linked with the upper and lower processes. A traction motor tray is placed on the assembly line for movement. The traction motor tray adopts a double-layer structure, and the upper layer can rotate 360°.

[0021] Furthermore, the workstation intelligent operation terminal module includes an operation personnel area, a motor information area, an operation status area, an operation process area, and an operation video area. The operation terminal logs in and manages personnel and motors through IC cards and QR codes.

[0022] Furthermore, the stator-rotor automatic assembly module includes two sets of servo control systems to complete assembly action control. The workstation intelligent operation terminal module communicates and controls with the servo control in real time through a communication interface. The stator-rotor assembly mechanism can work in two modes, either manually or automatically under the control of the operation terminal.

[0023] Furthermore, the free automatic measurement module includes two sets of servo electric cylinders respectively installed on the output shafts of the motor transmission end and the non-transmission end, and the bearing clearance value is measured by collecting the change of the lifting torque value.

[0024] Furthermore, the bearing insulation and pressure monitoring module includes an intelligent instrument monitoring system, which collects temperature and pressure data during the operation process, and transmits the test results to the workstation intelligent operation terminal module for automatic recording and storage.

[0025] Furthermore, the sensor electrical insulation detection module includes a high-voltage relay array, which automatically completes a one-time test of all detection points and transmits the test results to the workstation intelligent operation terminal module for automatic recording and storage.

[0026] Furthermore, the intelligent tool cabinet and torque wrench module include an RFID radio frequency identification antenna arranged on the tool cabinet and an identification tag arranged on the tool, and also include a digital torque wrench, and the digital torque wrench performs two-way data transmission with the workstation intelligent operation terminal module.

[0027] Furthermore, the traction motor digital maintenance management dashboard module includes a deployed data server unit, a video server unit, a digital display dashboard unit, a process digital monitoring unit, a data statistical analysis unit and a user management unit.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention is based on the traction motor maintenance operation process. Through the pulsating assembly line and various supporting intelligent tooling, each process can independently control the forward, backward, stop and other actions of the assembly line of this process, and can be linked with the upper and lower processes. The assembly line and the tooling have a logical interlocking function, which reduces the labor intensity of the maintenance operator and improves the maintenance efficiency of the traction motor.

[0030] 2. The present invention combines the motor maintenance operation instructions and the assembly line workflow to form on-site operation specifications and processes for each process of the digital assembly line, and digitizes and programs the processes, realizing the integration of process technology operation flow card control and process monitoring data, greatly improving the quality and efficiency of traction motor operations.

[0031] 3. The present invention has the functions of digital monitoring of maintenance operation process, data statistical analysis and user management, which can realize the whole process tracing of motor maintenance historical data, and can be connected with the maintenance data platform of the locomotive and vehicle department to provide effective data accumulation for the autonomous status maintenance of EMUs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a block diagram of the assembly line system in an EMU traction motor autonomous maintenance assembly line system;

[0033] Figure 2 This is a data collection flow chart for a digital maintenance line in an autonomous maintenance line system for traction motors of EMUs;

[0034] Figure 3 It is a structural schematic diagram of an assembly line in an EMU traction motor autonomous maintenance assembly line system;

[0035] Figure 4 This is a flow chart of the assembly line control in an EMU traction motor autonomous maintenance assembly line system;

[0036] Figure 5 It is a structural schematic diagram of a traction motor maintenance tray in an EMU traction motor autonomous maintenance assembly line system;

[0037] Figure 6 This is a schematic diagram of the electrical control of the stator and rotor assembly stations in an EMU traction motor autonomous maintenance assembly line system;

[0038] Figure 7 This is a schematic diagram of the electrical control of a bearing clearance measurement station in an autonomous maintenance assembly line system for traction motors of EMUs. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0040] Embodiment 1:

[0041] An EMU traction motor autonomous maintenance assembly line system includes: a pulsating assembly line digital control module, based on the traction motor maintenance operation process, to achieve each process independently control the process of the assembly line forward, backward, stop and other actions, and can be linked with the upper and lower processes, the assembly line and the tooling have a logical interlocking function;

[0042] The intelligent operation terminal module for workstations is based on the traction motor maintenance documents, operation instructions and assembly line workflow. It uses industrial touch screens to develop intelligent operation terminals suitable for each workstation, with video images, workstation equipment status collection and equipment control functions;

[0043] The stator and rotor automatic assembly module has developed a motor tray with a rotating positioning function, and uses infrared array positioning detection technology, multi-degree-of-freedom ultra-large load robotic arms and servo control technology to achieve automatic disassembly and assembly of the stator and rotor of the traction motor;

[0044] The free automatic measurement module realizes high-precision automatic clearance measurement of traction motors based on displacement feedback motor torque precision control technology, automatic clearance measurement technology, and manual measurement review technology.

[0045] The bearing insulation and pressure monitoring module integrates bearing heating equipment and pressure equipment, and realizes digital control and real-time data monitoring of bearing heating and pressure equipment based on sensor information collection, Internet of Things control and transmission technology;

[0046] The sensor electrical insulation detection module, based on high-voltage electrical relay array technology, electrical insulation monitoring and detection and automatic control technology, realizes complex electrical insulation automatic monitoring of multiple sensors;

[0047] Intelligent tool cabinet and torque wrench module, based on high-power Bluetooth signal transceiver technology, torque wrench value collection and digital remote transmission technology, high-power RFID technology and Internet of Things technology, realizes the automatic transmission of real-time torque data and real-time status positioning management of tools;

[0048] The digital maintenance management dashboard module for traction motors comprehensively uses information technologies such as network transmission, database, Internet of Things integration, and big data analysis to locally deploy data servers, video servers, and digital display dashboards, and develop functional modules such as digital monitoring of maintenance operation processes, data statistical analysis, and user management. This allows the assembly line maintenance progress to be controlled in real time, problems to be promptly dealt with, and maintenance records to be automatically generated electronically to prevent missed inspections, missed repairs, and missed parts replacements during the maintenance process. Management personnel can dynamically control the assembly line production process data through the management dashboard to guide the formulation of motor maintenance production plans. The motor maintenance process data is managed throughout its life cycle, and the operation process data and operation videos are stored in a database for a long time. The motor maintenance history records can be traced throughout the entire process through a one-click query function.

[0049] In this embodiment, Figure 1As shown in the figure, the management layer is composed of data servers, video servers, and operation control cabinets, which are responsible for the release of assembly line tasks, data collection, and task execution; the control layer is composed of operation terminals, which control the motor maintenance process of each station, are responsible for the control of intelligent tooling and tools, and automatically record the process quality data, which is the core of the assembly line execution. The operation layer is composed of assembly lines, intelligent tooling, and intelligent tools, and is responsible for motor transportation, assembly, and maintenance tasks.

[0050] like Figure 2 As shown in the figure, the digital maintenance line of traction motors is designed with the concept of digital maintenance work, drawing on the Internet of Things architecture model. The server is the core hub, responsible for dispatching maintenance tasks and data collection, storage, and docking with the application layer, to achieve digital management of maintenance tasks and digital collection and storage of maintenance data. The operation terminal is responsible for completing the task control of each process, directing the operators and controlling the intelligent tooling equipment to complete the maintenance work, and completing the data collection of the operation process, including maintenance data and operation videos. Intelligent tooling and tools, cameras, and various sensors are used as terminal actuators to replace manual labor to complete maintenance tasks and collect data.

[0051] The digital maintenance line for traction motors is designed with the concept of digital maintenance work in mind. Drawing on the IoT architecture model, the server is the core hub responsible for dispatching maintenance tasks, data collection, storage, and docking with the application layer, to achieve digital management of maintenance tasks and digital collection and storage of maintenance data. The operation terminal is responsible for completing the task control of each process, directing operators and controlling intelligent tooling equipment to complete maintenance operations, and completing data collection during the operation, including maintenance data and operation videos. Intelligent tooling and tools, cameras, and various sensors serve as terminal actuators to replace manual labor to complete maintenance tasks and collect data.

[0052] Embodiment 2: An autonomous maintenance assembly line system for traction motors of EMUs, which differs from Embodiment 1 in that the pulsating assembly line digital control module includes an assembly line, which is a three-party structure connected end to end, and which adopts a double-speed chain assembly line. The assembly line is logically controlled by a PLC control program, and each workstation can be controlled individually and can be linked with upper and lower processes. A traction motor tray is placed on the assembly line for movement, and the traction motor tray adopts a double-layer structure, and the upper layer can rotate 360°.

[0053] In this embodiment, Figure 3 As shown, the assembly line consists of 11 two-meter assembly lines, 2 right-angle turntables, and 1 one-meter belt fine-tuning assembly line, and all the assembly lines are roller-type. Figure 4As shown, the double-speed chain assembly line is adopted. The assembly line is controlled by PLC, which can realize functions such as automatic stop when moving forward and backward, and protection of front and rear workstation occupancy. Each traction motor is carried by a pallet, and the process is decomposed and allocated through the assembly line, so as to realize the reasonable allocation of tools, equipment, tooling and personnel.

[0054] Each traction motor is carried by a rotatable tray, such as Figure 5 As shown, the pallet can bear 800kg. The traction motor pallet adopts a double-layer structure and is made of aluminum alloy. The lower layer is a fixed base that moves on the assembly line rollers. The upper layer is the motor pallet, which plays the role of carrying and positioning the motor. The upper and lower layers are connected by load-bearing roller bearings, and the upper pallet can rotate 360°. There are 4 positioning pin holes installed on the front and rear sides of the upper pallet for positioning the motor stator during assembly. The motor pallet uses a high-strength polyurethane positioning seat to carry the motor and position it.

[0055] Embodiment 3: An autonomous maintenance assembly line system for traction motors of EMUs. The difference from Embodiment 1 is that the intelligent operation terminal module of the workstation includes an operation personnel area, a motor information area, an operation status area, an operation process area, and an operation video area. The operation terminal logs in and manages personnel and motors through IC cards and QR codes.

[0056] In this embodiment, the operation terminal executes the process step by step according to the operation instructions, controls the process, time and quality of the process execution, and records the operation data and video. The operation terminal displays the process specifications and data records, and the process specifications publish the process execution tasks, while guiding the process operation standards in the form of photos and text; the data synchronously records the process steps and data, and submits them to the data server for management and traceability.

[0057] Each terminal is equipped with a tool cabinet for storing relevant tools, which communicates wirelessly with the terminal through Bluetooth technology, enabling real-time management of tools by the operating terminal and providing prompts for the use of tools according to the current process steps.

[0058] For key processes such as stator and rotor assembly and bearing clearance measurement, the operation terminal realizes real-time control of automatic control equipment and reads information, replacing the tedious operations of manual assembly and manual measurement.

[0059] The operation terminal uses IC cards and QR code technology to log in and manage personnel and motors. Only legal operators registered in the management platform can log in to the operation interface. After the motor scans the QR code, only the motor with maintenance tasks can enter the maintenance state, avoiding illegal maintenance and unauthorized maintenance.

[0060] For key processes such as stator and rotor assembly and bearing clearance measurement, the operation terminal realizes real-time control and information reading of various intelligent devices, replacing manual assembly and manual measurement. The operation terminal logs in and manages personnel and motors through IC cards and QR codes. After the motor scans the QR code, only the motor with maintenance tasks can enter the maintenance state, avoiding illegal and unauthorized repairs.

[0061] Embodiment 4: An autonomous maintenance assembly line system for traction motors of EMUs. The difference from Embodiment 1 is that the stator and rotor automatic assembly module includes two sets of servo control systems to complete assembly action control. The workstation intelligent operation terminal module communicates and controls with the servo control in real time through a communication interface. The stator and rotor assembly mechanism can work in two modes, either manually or automatically under the control of the operation terminal.

[0062] In this embodiment, the workflow is as follows Figure 6 As shown in the figure, the motor stator and rotor assembly line is equipped with a set of stator mechanical positioning devices, which consists of four electric cylinders with tapered positioning pins and a roller fine-tuning platform. After the motor pallet enters the installation position through the assembly line, the fine-tuning platform first adjusts the position of the motor pallet to ensure that the center line of the pallet is coaxial with the center line of the mechanical arm tooling, and then inserts the four electric cylinder positioning pins into the positioning pin holes of the upper pallet to lift the upper pallet to achieve the horizontal, pitch, and rotational positioning of the motor. In order to ensure the correctness of the stator positioning, a laser measurement system is introduced to measure the position of the stator after positioning in real time, thereby forming a closed-loop feedback control.

[0063] Since the rotor weighs 300kg and the only part that can be grasped is the rotor drive shaft head, the existing multi-degree-of-freedom manipulator cannot grasp such a heavy workpiece. A set of three-axis manipulators is used to grasp the rotor and assemble it. The manipulator has three degrees of freedom: rotation, lifting, and lateral. After receiving the assembly command, the robot arm rotates 180°, lowers the grasping mechanism, inserts the grasping tooling into the rotor shaft head, grasps the rotor, then raises the robot arm, rotates 180° to the center of the stator for positioning, and puts it into the stator cavity. The lifting and rotation position of the robot arm are controlled by servo motor feedback. During the movement, position errors may be caused by mechanical clearance, motor jamming and other reasons. In order to eliminate the errors generated during the rotation and lifting of the robot arm and ensure the coaxiality of the rotor and stator assembly, a laser alignment measurement device is designed on the robot arm. A point laser is installed on the robot arm, and a laser position sensor is installed on the assembly line. When the robot arm grabs the rotor and rotates to the stator assembly position, the laser illuminates the laser position sensor installed on the rear side of the stator to check the coaxiality deviation between the rotor and the stator, and fine-tune the deviation before sending it into the rotor.

[0064] Embodiment 5: An autonomous maintenance assembly line system for traction motors of EMUs. The difference from Embodiment 1 is that the free automatic measurement module includes two sets of servo electric cylinders respectively installed on the output shafts of the motor transmission end and the non-transmission end. The bearing clearance value is measured by collecting the changes in the lifting torque value.

[0065] In this embodiment, the workflow is as follows Figure 6 As shown, a set of servo electric cylinders are installed on the output shafts of the motor transmission end and the non-transmission end respectively. The transmission guide rail first sends the electric cylinder to the lifting shaft position, and then the servo electric cylinder lifts the output shaft. The lifting adopts the method of first fast and then slow. When the electric cylinder fulcrum contacts the output shaft, it is lifted slowly, and the lifting torque value changes are collected at the same time. When the force value reaches the specified value of 70kg, the lifting is stopped, and the wireless micrometer data of the current output shaft measurement point is recorded. Then it is lifted to 100kg again, and the micrometer data of the output shaft measurement point is recorded. The micrometer values ​​of the two measurements are subtracted to obtain the bearing clearance value. The above measurement process is all completed automatically, eliminating human errors, and the measurement refers to the maintenance process requirements.

[0066] The core of clearance measurement lies in the high-speed synchronous sampling of the motor shaft head pressure and displacement, as well as the precise control of the servo electric cylinder position. Since the bearing clearance is only about 0.06mm, the pressure detection error is required to be less than 1kg. Therefore, the system must stop the electric cylinder lifting action at the moment the detection pressure value reaches the specified value, requiring the servo electric cylinder to achieve high-speed and high-precision feedback control.

[0067] Embodiment 6: An autonomous maintenance assembly line system for traction motors of EMUs. The difference from Embodiment 1 is that the bearing insulation and pressure monitoring module includes an intelligent instrument monitoring system, which collects temperature and pressure data during the operation process, and transmits the test results to the workstation intelligent operation terminal module for automatic recording and storage.

[0068] In this embodiment, in order to realize the quality data monitoring of the bearing insulation and pressure operation process, the insulation box and hydraulic pump are digitally transformed, and an intelligent instrument monitoring system is added to realize the temperature and pressure data collection during the operation process, and the data is transmitted to the process operation terminal in real time through the interface. The operation terminal realizes the digital control, data collection and storage of the insulation and pressure, and automatically alarms for over-temperature and over-pressure to avoid damage to accessories caused by non-standard operations.

[0069] Embodiment 7: An autonomous maintenance assembly line system for traction motors of EMUs. The difference from Embodiment 1 is that the sensor electrical insulation detection module includes a high-voltage relay array, which automatically completes a one-time test of all detection points and transmits the test results to the workstation intelligent operation terminal module for automatic recording and storage.

[0070] In this embodiment, after the traction motor is assembled, it is necessary to perform insulation testing on the temperature sensor, speed sensor, motor three-phase wiring, and rotor to the ground. There are as many as 20 testing points, and the maximum testing voltage is 2500V. The traditional manual instrument detection efficiency is low, and manual detection has safety hazards. The automatic insulation detection equipment adopts a modular design, which can complete the connection of all detection points at one time. It uses a high-voltage relay array to automatically complete a one-time test of all detection points, and transmits the test results to the process operation terminal for automatic recording and storage, which improves the operation efficiency by more than 1 times. In addition, the test results are directly recorded by the operation terminal, avoiding the possibility of recording errors during manual measurement.

[0071] Embodiment 8: An autonomous maintenance assembly line system for traction motors of EMUs, which differs from Embodiment 1 in that the intelligent tool cabinet and torque wrench module include an RFID radio frequency identification antenna arranged on the tool cabinet and an identification tag arranged on the tool, and also include a digital torque wrench, and the digital torque wrench performs two-way data transmission with the work station intelligent operation terminal module.

[0072] In this embodiment, the bolt tightening of each component of the traction motor has strict torque requirements. The traditional method uses a mechanical release torque wrench, which has low precision, uncontrolled operation data, and manual recording of torque values. The research team modified the digital torque wrench so that the wrench is controlled by the operation terminal. During the torque operation, the operation terminal automatically sends the torque preset value to the wrench according to the process requirements. When the tightening torque reaches the specified preset value, an audible and visual reminder is given, and the torque value is transmitted wirelessly. If the specified torque value is not reached, no data is transmitted, thus avoiding the generation of unqualified torque.

[0073] Anti-metal RFID tags are attached to tools, and RFID antennas are installed in tool cabinets to identify tags from a distance. The tool cabinet can sense the access status of each tool in the cabinet in real time. The smart cabinet displays relevant tool information on the screen in front of the cabinet, and sends the data to the work terminal at the workstation to manage tools and parts. The tool cabinet is equipped with an electromagnetic lock, which can only be opened through the touch screen on the tool cabinet after closing to prevent illegal access to tools and accessories.

[0074] Embodiment 8: An autonomous maintenance assembly line system for traction motors of EMUs, which differs from Embodiment 1 in that the digital maintenance management dashboard module for traction motors includes a locally deployed data server unit, a video server unit, a digital display dashboard unit, a digital process monitoring unit, a data statistical analysis unit and a user management unit.

[0075] In the embodiment, it has the functions of digital monitoring of the maintenance operation process, data statistical analysis and user management, so that the progress of the assembly line maintenance can be controlled in real time, the maintenance records are automatically generated electronically, problems are dealt with in time, and the formulation of motor maintenance production plans is guided; the motor maintenance process data is controlled throughout the life cycle, and the motor maintenance history records can be traced throughout the process through a one-key query function. Visual management makes the maintenance progress of the entire assembly line controllable in real time, maintenance records are generated electronically, and problems are dealt with in time, eliminating the problems of missed inspections, missed repairs, and missed replacement parts during the maintenance process. To achieve full life cycle quality control, operation data and operation videos are entered into the database for lifelong storage, and the motor maintenance history records can be traced throughout the process through a one-key query function. Managers can remotely manage the production site through the local area network, view real-time video and process operation video information, and eliminate violations of operation regulations.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An EMU traction motor autonomous maintenance assembly line system, comprising: The pulsating assembly line digital control module is used to realize that each process can independently control the forward, backward and stop actions of the assembly line of this process, and to link with the upper and lower processes; The workstation intelligent operation terminal module is used to control the execution process, time, and quality of each process, and to record and save the operation data and video of the entire process; Stator and rotor automatic assembly module, used to realize automatic disassembly and assembly of the stator and rotor of the traction motor; Free automatic measurement module, used to achieve high-precision automatic clearance measurement of traction motors; Bearing insulation and pressure monitoring module, used to realize digital control and real-time data monitoring of bearing heating and pressure equipment; Sensor electrical insulation detection module, used to realize complex electrical insulation automatic monitoring of multiple sensors; Intelligent tool cabinet and torque wrench module, used to realize the automatic transmission of real-time torque data and real-time status positioning management of tools; The digital maintenance management dashboard module for traction motors is used to realize the digital and three-dimensional management of assembly line production, helping managers to dynamically control the data of assembly line production process and guide the formulation of motor maintenance production plans; The pulsating assembly line digital control module includes an assembly line, which is a three-party structure connected end to end. The assembly line adopts a double-speed chain assembly line. The assembly line is logically controlled by a PLC control program. Each workstation can be controlled individually and can be linked with the upper and lower processes. A traction motor tray is placed on the assembly line for movement. The traction motor tray adopts a double-layer structure, and the upper layer can rotate 360°; The stator-rotor automatic assembly module includes two sets of servo control systems to complete assembly action control. The workstation intelligent operation terminal module communicates with the servo control in real time through a communication interface. The stator-rotor assembly mechanism can work in two modes, either manually or automatically under the control of the operation terminal.

2. The EMU traction motor autonomous maintenance assembly line system according to claim 1 is characterized in that: The workstation intelligent operation terminal module includes an operation personnel area, a motor information area, an operation status area, an operation process area, and an operation video area. The operation terminal logs in and manages personnel and motors through IC cards and QR codes.

3. The EMU traction motor autonomous maintenance assembly line system according to claim 1 is characterized by: The free automatic measurement module includes two sets of servo electric cylinders respectively installed on the output shafts of the motor transmission end and the non-transmission end, and the bearing clearance value is measured by collecting the change of the lifting torque value.

4. The EMU traction motor autonomous maintenance assembly line system according to claim 1 is characterized by: The bearing insulation and pressure monitoring module includes an intelligent instrument monitoring system, which collects temperature and pressure data during the operation process, and transmits the test results to the workstation intelligent operation terminal module for automatic recording and storage.

5. The EMU traction motor autonomous maintenance assembly line system according to claim 1 is characterized by: The sensor electrical insulation detection module includes a high-voltage relay array, which automatically completes a one-time test of all detection points and transmits the test results to the workstation intelligent operation terminal module for automatic recording and storage.

6. The EMU traction motor autonomous maintenance assembly line system according to claim 1 is characterized by: The intelligent tool cabinet and torque wrench module include an RFID radio frequency identification antenna arranged on the tool cabinet and an identification tag arranged on the tool, and also include a digital torque wrench, and the digital torque wrench performs two-way data transmission with the workstation intelligent operation terminal module.

7. The EMU traction motor autonomous maintenance assembly line system according to claim 1 is characterized by: The traction motor digital maintenance management dashboard module includes a locally deployed data server unit, a video server unit, a digital display dashboard unit, a process digital monitoring unit, a data statistical analysis unit and a user management unit.

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