Automatic control device for withdrawal and press fitting of motor nodes of motor train unit

Abstract

The utility model belongs to the technical field of automatic control, and particularly discloses an automatic control device for withdrawal and press fitting of motor nodes of a motor train unit. The wireless two-dimensional code scanner is used for scanning and collecting identity information of a motor; the servo driving mechanism is used for driving the press-fitting floating arm to move vertically; the hydraulic pump station control loop is used for controlling starting and stopping of the hydraulic pump station and the flowing direction of hydraulic oil; the wireless digital caliper is used for measuring the inner diameter of a motor lifting lug hole and the outer diameter of a node; the digital display pressure gauge is used for measuring the output pressure of the hydraulic pump; the displacement measuring instrument is used for measuring the node displacement in the unloading and press-fitting processes; and the PLC unit is used for acquiring data information through a communication bus and driving and controlling cooperative work. According to the utility model, digitalization and visualization of motor node withdrawal and press fitting are realized, and the management level is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic control, and more specifically, relates to an automatic control device for the removal and press-fitting of motor nodes of EMUs. Background Technique

[0002] Each traction motor of the EMU is flexibly hoisted on the bogie by nodes in four lugs on its housing. Since the performance of the node rubber will deteriorate during use, during the advanced maintenance of the EMU, the used nodes need to be removed from the motor lugs and new nodes need to be pressed in again.

[0003] At present, each EMU depot in China is using simple or complete sets of removal and press-fitting equipment to complete the removal and press-fitting operations of motor nodes. During the operation, the operator observes and controls the pressure of the hydraulic pump and the press-fitting effect, and manually records the motor information and the situation of node removal and press-fitting after completion. The existing node removal and press-fitting equipment lacks the collection of motor identity information, the collection of the diameter of the motor lug hole and the node diameter, and the discrimination of the interference amount, and lacks the corresponding relationship curve between the removal and press-fitting force and the node exit or press-in amount and the underpressure or overpressure alarm function. In addition, the existing automation equipment often has the following problems: lack of real-time monitoring and feedback mechanism, unable to ensure the precise control of various parameters during the operation process; the operation process is not flexible enough, difficult to adapt to the diverse needs of different types of motors; the communication stability is insufficient, vulnerable to environmental factors, resulting in a decline in system reliability; lack of intelligent recognition and data processing functions, unable to realize the optimization and simplification of the operation process.

[0004] Based on the above defects and deficiencies, there is an urgent need in this field to propose a motor node removal and press-fitting equipment integrating automatic control, intelligent recognition and communication functions, aiming to realize the automation, intelligence and high efficiency of motor node operations through technological innovation. Content of the Utility Model

[0005] In view of the above defects or improvement requirements of the prior art, the utility model provides an automatic control device for the removal and press-fitting of motor nodes of EMUs, which realizes the optimization of the operation process, improves the operation efficiency and safety, reduces the maintenance cost, and improves the operation environment by integrating advanced automatic control, intelligent recognition, real-time monitoring and communication technologies.

[0006] To achieve the above object, the utility model proposes an automatic control device for the removal and press-fitting of motor nodes of EMUs, comprising:

[0007] A wireless QR code scanner for scanning and collecting motor identity information;

[0008] A servo drive mechanism for driving the vertical movement of the press-fitting floating arm;

[0009] A hydraulic pump station control circuit for controlling the start and stop of a hydraulic pump station and the flow direction of hydraulic oil;

[0010] A wireless digital caliper for measuring the inner diameter of the motor lug hole and the outer diameter of the node;

[0011] A digital display pressure gauge for measuring the output pressure of the hydraulic pump;

[0012] A displacement measuring instrument for measuring the displacement of the node during the dismounting and press-fitting processes; and

[0013] A PLC unit for collecting data information of the wireless QR code scanner, servo drive mechanism, hydraulic pump station control circuit, wireless digital caliper, digital display pressure gauge and displacement measuring instrument through a communication bus and driving and controlling the wireless QR code scanner, servo drive mechanism, hydraulic pump station control circuit, wireless digital caliper, digital display pressure gauge and displacement measuring instrument to work together.

[0014] As a further preference, it further includes a human-machine interface for information input and display of operation process charts.

[0015] As a further preference, the human-machine interface is connected to the PLC unit through an Ethernet or serial communication interface.

[0016] As a further preference, the wireless QR code scanner and the wireless digital caliper are connected to the PLC unit or the human-machine interface through a wireless communication protocol.

[0017] As a further preference, the digital display pressure gauge and the displacement measuring instrument are connected to the PLC unit through an analog signal or digital signal converter.

[0018] As a further preference, the servo drive mechanism is connected to the PLC unit through a high-precision servo motor to receive control signals to adjust the heights of the left lifting mechanism and the right lifting mechanism.

[0019] As a further preference, the hydraulic pump station control circuit is connected to the PLC unit through a solenoid valve and a pressure sensor.

[0020] As a further preference, it further includes a WiFi Internet access module for wirelessly receiving operation plans and uploading operation process information.

[0021] As a further preference, the WiFi Internet access module is integrated on the PLC unit;

[0022] Or the WiFi Internet access module is used as an independent communication interface module to communicate with an external server through a wireless network.

[0023] As a further preference, it further includes a face recognition terminal for identifying operating personnel, and the face recognition terminal is connected to the PLC unit and the human-machine interface through a data transmission line or a wireless network.

[0024] Generally speaking, compared with the prior art through the above technical solutions conceived by the present utility model, the following technical advantages are mainly presented:

[0025] 1. The present utility model not only improves the automation level of the motor node removal and pressing operations, but also ensures high efficiency, high precision and high safety of the operations. At the same time, it reduces the maintenance cost and improves the working environment of the operators.

[0026] 2. The present utility model makes the operation information recording more accurate. All data such as motor identity information, node information, removal or pressing parameters are automatically collected and recorded by the equipment, replacing the manual filling of operation record forms.

[0027] 3. The present utility model reduces the workload of operating personnel. The operation of manually adjusting the height of the floating arm of the removal and pressing equipment is changed to the equipment automatically adjusting the height of the floating arm according to the motor model. The operation of the operator observing the position of the node exiting or being pressed in at any time is changed to the equipment automatically collecting and judging in real time.

[0028] 4. The present utility model improves the quality of motor node removal and pressing. The equipment collects, analyzes, displays and saves the pressure of the hydraulic pump station and the displacement of the node in real time, and gives an alarm to remind the operating personnel and quality inspection personnel to handle when the pressure and displacement curve exceeds the process range. Description of the Drawings

[0029] Figure 1 is the topology diagram of an automatic control device for removing and pressing motor nodes of a multiple unit of the present utility model;

[0030] Figure 2 is the structural schematic diagram of the existing motor node automatic removal and pressing equipment related to the present utility model.

[0031] In all the drawings, the same reference numerals represent the same technical features, specifically: 11 - PLC unit, 12 - human-machine interface, 13 - wireless QR code scanner, 14 - wireless digital caliper, 15 - digital display pressure gauge, 16 - displacement measuring instrument, 17 - servo drive mechanism, 18 - hydraulic pump station control circuit, 19 - WiFi Internet access module, 110 - face recognition terminal; 2 - existing equipment, 21 - motor horizontal adaptive support platform, 22 - left fixture assembly, 23 - right fixture assembly, 24 - left lifting mechanism, 25 - right lifting mechanism. Detailed Embodiments

[0032] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] As Figure 1 and Figure 2 shown, an automatic control device for dismounting and press-fitting motor nodes of a multiple unit train provided by an embodiment of the present utility model includes:

[0034] A PLC unit 11 for automatic control, responsible for sensor information acquisition and drive control;

[0035] A human-machine interface 12 for information input and display of operation process charts;

[0036] A wireless QR code scanner 13 for scanning and collecting motor identity information;

[0037] A wireless digital caliper 14 for measuring the inner diameter of the motor lug hole and the outer diameter of the node;

[0038] A digital display pressure gauge 15 for measuring the output pressure of the hydraulic pump;

[0039] A displacement measuring instrument 16 for measuring the displacement of the node during dismounting and press-fitting;

[0040] A servo drive mechanism 17 for controlling the height of the press-fitting floating arm;

[0041] A hydraulic pump station control circuit 18 for controlling the start and stop of the hydraulic pump station and the flow direction of the hydraulic oil;

[0042] A WiFi Internet access module 19 for wirelessly receiving operation plans and uploading operation process information;

[0043] A face recognition terminal 110 for identifying operating personnel.

[0044] Among them, the PLC unit 11 is used to collect the data information of the wireless QR code scanner 13, the servo drive mechanism 17, the hydraulic pump station control circuit 18, the wireless digital caliper 14, the digital display pressure gauge 15 and the displacement measuring instrument 16 through a communication bus and drive and control the wireless QR code scanner 13, the servo drive mechanism 17, the hydraulic pump station control circuit 18, the wireless digital caliper 14, the digital display pressure gauge 15 and the displacement measuring instrument 16 to work together.

[0045] Specifically, in some alternative embodiments, the PLC unit 11 can automatically adjust the heights of the lifting mechanisms 24, 25 controlled by the servo drive mechanism 17 according to the motor identity information collected by the wireless QR code scanner 13 to adapt to the nodes of different motor models.

[0046] In some alternative embodiments, when the pressure detected by the digital display pressure gauge 15 reaches the upper limit of the rated value, and the node displacement measured by the displacement measuring instrument 16 does not meet the requirements, the human-machine interface 12 will give a prompt alarm and stop the pressurization of the hydraulic pump station control circuit 18.

[0047] In some alternative embodiments, the human-machine interface 12 can automatically calculate the interference amount between the outer diameter of the node and the inner diameter of the lifting lug according to the data of the inner diameter of the motor lifting lug hole and the outer diameter of the node measured by the wireless digital caliper 14, and prompt the operator to re-select the node when the interference amount exceeds the qualified range.

[0048] In some alternative embodiments, when the displacement measuring instrument 16 detects that the node has been pressed in place, the PLC unit 11 automatically stops the operation of the hydraulic pump station control circuit 18.

[0049] In some alternative embodiments, when the digital display pressure gauge 15 detects that the output pressure of the hydraulic pump station has reached the rated value, and the displacement measuring instrument 16 detects that the node has not been pressed in place, the human-machine interface 12 issues a press-fitting abnormality alarm.

[0050] In some alternative embodiments, it includes a motor horizontal adaptive support table 21 for supporting the motor and aligning the motor node with the fixture assemblies 22, 23.

[0051] In some alternative embodiments, it includes a function for real-time displaying the pressure and moving distance change curve, and automatically uploading data to the management server through the WiFi Internet module 19.

[0052] In some alternative embodiments, the PLC unit 11 serves as an information processing center. Through its internal logic processing unit, it coordinates the work of various sensors and actuators to ensure the automated control of the entire withdrawing and pressing process. The human-machine interface 12 displays the operation process through a graphical user interface (GUI), receives instructions from the operator, and shows real-time data and status information. The wireless QR code scanner 13 scans the QR code on the motor nameplate, automatically identifies the motor model, and transmits the information to the human-machine interface 12 and the PLC unit 11 for subsequent operation process control. The measurement data of the wireless digital caliper 14 is transmitted to the human-machine interface 12 through a wireless signal. After being processed by the human-machine interface 12, it is sent to the PLC unit 11 to adjust the positions of the fixture components 22, 23 and the pressure settings of the hydraulic pump station 18. The data of the digital display pressure gauge 15 and the displacement measuring instrument 16 are transmitted to the PLC unit 11 in real time by wired or wireless means. The PLC unit 11 makes logical judgments and control decisions based on these data. The hydraulic pump station control circuit 18 receives the control signal from the PLC unit 11 and adjusts the working state of the hydraulic pump to achieve precise control of the fixture components 22, 23. The WiFi Internet access module 19 is responsible for communicating with the external server, downloading the operation plan, uploading the operation data and alarm information to ensure the real-time update of information and remote monitoring. The face recognition terminal 110 verifies the personnel identity before the operation starts. The verification result is transmitted to the PLC unit 11 and the human-machine interface 12 through a secure communication protocol to ensure the safety of the operation.

[0053] Based on any of the above embodiments or a combination of multiple embodiments, this embodiment describes the hardware connection structure between each module:

[0054] The PLC unit 11 is communicatively connected to all sensors and actuators to achieve high-speed and stable data exchange and instruction transmission. The human-machine interface 12 is connected to the PLC unit 11 through an Ethernet or serial communication interface for receiving operation instructions and displaying real-time data. The wireless QR code scanner 13 and the wireless digital caliper 14 are connected to the PLC unit 11 or the human-machine interface 12 through a wireless communication protocol (such as Bluetooth, Wi-Fi) to achieve wireless data transmission. The digital display pressure gauge 15 and the displacement measuring instrument 16 are connected to the PLC unit 11 through an analog signal or digital signal converter to provide real-time pressure and displacement data. The servo drive mechanism 17 is connected to the PLC unit 11 through a high-precision servo motor and receives control signals to adjust the height of the lifting mechanism (24, 25). The hydraulic pump station control circuit 18 is connected to the PLC unit 11 through a solenoid valve and a pressure sensor to achieve precise control of the hydraulic pump. The WiFi Internet access module 19 is integrated in the PLC unit 11 or serves as an independent communication interface module and communicates with the external server through a wireless network. The face recognition terminal 110 is connected to the PLC unit 11 or the human-machine interface 12 through a secure data transmission line or wireless network for identity verification and access control.

[0055] In a specific embodiment of the present utility model, the PLC unit 11 is the core of automatic control, responsible for sensor information acquisition and drive control; the human-machine interface 12 is responsible for information input and display of operation process charts; the wireless two-dimensional code scanner 13 scans the two-dimensional code of the motor to collect motor identity information; the wireless digital caliper 14 is used to measure the inner diameter of the motor lug hole and the outer diameter of the node; the digital display pressure gauge 15 measures the output pressure of the hydraulic pump; the displacement measuring instrument 16 measures the node displacement during the withdrawal and press-fitting processes; the servo drive mechanism 17 controls the height of the press-fitting floating arm; the control circuit 18 of the hydraulic pump station controls the start and stop of the hydraulic pump station and the flow direction of the hydraulic oil; the WiFi Internet access module 19 wirelessly receives the operation plan, and uploads the information of the withdrawal and press-fitting operation processes. The face recognition terminal 110 identifies the operating personnel at the start of the operation.

[0056] Motor node withdrawal operation: Before the operation of withdrawing the traction motor node starts, start the PLC unit 11 and the human-machine interface 12 to enter the working state. Identify the operating personnel through 110, and download the shift operation plan from the management server of the motor car depot through 19. The traction motor is hoisted onto 21, and hold 13 to scan the two-dimensional code on the nameplate of the traction motor. The human-machine interface 12 identifies and records the motor identity information. The PLC unit 11 controls 17 to adjust the heights of the left lifting mechanism 24 and the right lifting mechanism 25 to a height suitable for the motor node according to the identified motor model. The PLC unit 11 starts the hydraulic pump station, and slowly pushes the node out of the motor lug hole through the movement of the clamp blocks of the left clamp assembly 22 and the right clamp assembly 23. During the pressing process, the PLC unit 11 real-time collects the pressure value of the digital display pressure gauge 15 and the moving distance of the clamp block measured by the displacement measuring instrument 16, and displays the change curve of the pressure and the moving distance in real time on the human-machine interface 12 and automatically uploads it to the management server through the WiFi Internet access module 19. When the node is pushed out of the lug hole, the PLC unit 11 starts the control circuit 18 of the hydraulic pump station to work. During the process of withdrawing the node, if the pressure detected by the digital display pressure gauge 15 has reached the upper limit of the rated value, and the node displacement measured by the displacement measuring instrument 16 does not meet the requirements, the human-machine interface 12 gives a prompt alarm and stops the pressurization of the control circuit 18 of the hydraulic pump station.

[0057] Motor node press-fitting operation: before the start of the press-fitting operation of the traction motor node, start the PLC unit 11 and the human-machine interface 12 to enter the working state, identify the participating personnel through the face recognition terminal 110, and download the current work plan from the EMU management server through the WiFi Internet module 19; the traction motor is hoisted onto the motor horizontal adaptive support 21, and the handheld wireless QR code scanner 13 scans the QR code on the traction motor nameplate. The human-machine interface 12 identifies and records the motor identity information, and uses the wireless digital caliper 14 to measure the diameter of the motor lifting ear hole and send it to the human-machine interface 12, and then uses the wireless digital caliper 14 to measure the node outer diameter and send it to the human-machine interface 12. The human-machine interface 12 automatically calculates the interference between the node outer diameter and the inner diameter of the lifting ear. If the interference is not within the qualified range, the operator is prompted to re-select the node with a diameter range; put the selected node into the left fixture assembly 22 and the right fixture assembly of the fixture 23, the PLC unit 11 controls the servo drive mechanism 17 to adjust the height of the left lifting mechanism 24 and the right lifting mechanism 25 to a height suitable for the motor lifting ear hole, and the PLC unit 11 starts the hydraulic pump station 18 to push the left clamp assembly 22 and the right clamp assembly 23 to move the clamp pressure block to press the node into the motor lifting ear hole. During the pressurization process, the PLC unit 11 collects the pressure value of the digital pressure gauge 15 and the moving distance of the pressure block measured by the displacement measuring instrument 16 in real time, displays the change curve of pressure and moving distance in real time in the human-machine interface 12, and automatically uploads it to the management server through the WiFi Internet module 19. When the displacement measuring instrument 16 detects that the node has been pressed into place, the hydraulic pump station will automatically stop working; if the digital pressure gauge 15 detects that the output pressure of the hydraulic pump station has reached the rated value, the displacement measuring instrument 16 detects that the node has not been pressed into place, and the human-machine interface 12 issues an abnormal pressing alarm.

[0058] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic control device for the removal and press-fitting of motor nodes of multiple unit trains, characterized in that, Including: A wireless QR code scanner (13) for scanning and collecting motor identity information; A servo drive mechanism (17) for driving the vertical movement of the press-fitting floating arm; A hydraulic pump station control circuit (18) for controlling the start and stop of the hydraulic pump station and the flow direction of the hydraulic oil; A wireless digital caliper (14) for measuring the inner diameter of the motor lug hole and the outer diameter of the node; A digital display pressure gauge (15) for measuring the output pressure of the hydraulic pump; A displacement measuring instrument (16) for measuring the displacement of the node during the withdrawal and press-fitting processes; and A PLC unit (11) for collecting data information of the wireless QR code scanner (13), servo drive mechanism (17), hydraulic pump station control circuit (18), wireless digital caliper (14), digital display pressure gauge (15) and displacement measuring instrument (16) through a communication bus and driving and controlling the wireless QR code scanner (13), servo drive mechanism (17), hydraulic pump station control circuit (18), wireless digital caliper (14), digital display pressure gauge (15) and displacement measuring instrument (16) to work together.

2. The automatic control device for disassembling and press-fitting the motor nodes of the multiple unit train according to claim 1, characterized in that, It further includes a human-machine interface (12) for information entry and display of operation process charts.

3. The automatic control device for withdrawing and press-fitting the motor nodes of the multiple unit train according to claim 2, characterized in that, The human-machine interface (12) is connected to the PLC unit (11) through an Ethernet or serial communication interface.

4. The automatic control device for withdrawing and press-fitting the motor nodes of the multiple unit train according to claim 2, characterized in that, The wireless QR code scanner (13) and the wireless digital caliper (14) are connected to the PLC unit (11) or the human-machine interface (12) through a wireless communication protocol.

5. The automatic control device for the removal and press-fitting of motor nodes of a multiple unit train according to claim 2, characterized in that, The digital display pressure gauge (15) and the displacement measuring instrument (16) are connected to the PLC unit (11) through an analog signal or digital signal converter.

6. The automatic control device for dismounting and press-fitting of motor nodes of a multiple unit train according to claim 2, characterized in that, The servo drive mechanism (17) is connected to the PLC unit (11) through a high-precision servo motor to receive control signals to adjust the heights of the left lifting mechanism (24) and the right lifting mechanism (25).

7. The automatic control device for withdrawing and press-fitting motor nodes of a multiple unit train according to claim 2, characterized in that, The hydraulic pump station control circuit (18) is connected to the PLC unit (11) through a solenoid valve and a pressure sensor.

8. The automatic control device for withdrawing and press-fitting the motor nodes of the multiple unit train according to claim 2, wherein, It further includes a WiFi Internet access module (19) for wirelessly receiving operation plans and uploading operation process information.

9. The automatic control device for withdrawing and press-fitting the motor nodes of the multiple unit train according to claim 8, characterized in that, The WiFi Internet access module (19) is integrated on the PLC unit (11); Or the WiFi Internet access module (19) serves as an independent communication interface module and communicates with an external server through a wireless network.

10. An automatic control device for withdrawing and press-fitting motor nodes of a multiple unit train, according to any one of claims 2-9, characterized in that, It further includes a face recognition terminal (110) for identifying operation personnel, and the face recognition terminal (110) is connected to the PLC unit (11) and the human-machine interface (12) through a data transmission line or a wireless network.

Images