Sensor clamping mechanism and mutual inductor crimping fault detection device and method

Abstract

The invention discloses a sensor clamping mechanism and a mutual inductor crimping fault detection device and method, and relates to the technical field of mutual inductor detection. In a project verification process of an existing voltage-withstanding table and an error table, abnormal conditions such as inclination of a mutual inductor body, inaccurate tray positioning, abnormity of a magnetic switch, air leakage of an air cylinder air pipe and the like occur, so that a terminal stud of a test table cannot be in contact with a secondary side terminal of a mutual inductor to be tested; and detection interruption or false detection of a corresponding mutual inductor exists, so that the verification efficiency is reduced. According to the frame body, the measuring rod, the elastic piece and the sensor, the sensor can detect the relative displacement between the measuring rod and the frame body, if the relative displacement is within a normal range, the terminal stud is in successful crimping contact, and if the relative displacement exceeds the normal displacement range, the terminal stud has a crimping fault. Therefore, the system judges that the wiring terminal of the to-be-detected mutual inductor is failed in crimping with the wiring end, automatically identifies the crimping fault of the wiring end, and improves the operation efficiency of an assembly line.

Description

Technical Field

[0001] The present invention relates to the technical field of mutual inductor detection, and in particular to a sensor clamping mechanism, a mutual inductor crimping fault detection device and a method. Background Art

[0002] At present, the technologies of automatic calibration of multiple current transformers and automatic processing of calibration data in the low-voltage current transformer automated calibration line are relatively mature. Compared with the traditional manual calibration method, the operation of the low-voltage current transformer automated calibration line in the field of electric energy metering has greatly improved the calibration efficiency. Its fully automatic operation has eliminated the influence of human factors to a certain extent.

[0003] Normally, it takes 25 minutes to complete the five inspection items on the two workstation test benches, the insulation and voltage withstand test unit and the error verification unit, while the time required for all assembly line inspection processes is generally 31.4 minutes. Therefore, the inspection time of the voltage withstand test bench and the error test bench during the operation of the assembly line will directly affect the production rhythm of the assembly line.

[0004] However, during the project verification process of the voltage-resistant bench and the error bench, abnormal conditions such as the transformer body tilting or the tray positioning being inaccurate may cause the terminal of the test bench to fail to contact the secondary terminal of the transformer to be tested, resulting in frequent crimping failures. At this time, it is necessary to wait until the corresponding electrical measurement results of the computer-automated verification system come out. On the one hand, the detection results of the verification system may be blank, or the verification system may prompt a terminal failure, thereby wasting the corresponding verification time, interrupting the detection, and even the corresponding transformer to be tested may need to be re-inspected. On the other hand, the detection indicators may be abnormal, causing the system to judge the transformer to be tested as unqualified, thereby causing the corresponding transformer to be misdetected, thereby reducing the verification efficiency.

[0005] In summary, during the project calibration process of the existing withstand voltage bench and error bench, abnormal conditions such as the transformer body tilting or inaccurate positioning of the tray will cause the connection terminals of the test bench to not contact the secondary side terminals of the transformer to be tested, resulting in detection interruption or misdetection of the corresponding transformer, thereby reducing the calibration efficiency. Summary of the Invention

[0006] The present invention aims to address the problem of abnormalities such as transformer body tilt or inaccurate tray positioning during the project verification process on existing withstand voltage and error test benches. This can cause the test bench's wiring terminals to lose contact with the secondary terminals of the transformer under test, leading to detection interruptions or misdetection of the corresponding transformer, thereby reducing verification efficiency. Furthermore, a sensor clamping mechanism and a transformer crimping fault detection device and method are provided.

[0007] The technical solution of the present invention is: a sensor clamping mechanism, comprising: a truss; A wiring assembly having multiple groups spaced apart, the wiring assembly comprising a frame, a measuring rod, an elastic member, and a sensor. The frame is vertically mounted on the bottom surface of the truss, the frame having a hole opening downward, the measuring rod being slidably mounted in the hole, and the bottom end of the measuring rod being connected to a wiring terminal for crimping with a wiring terminal of a transformer to be measured; The elastic member is connected to the measuring rod, and the elastic member has an elastic force that pushes the measuring rod to slide downward; The sensor is mounted on the frame or the measuring rod, and is used to detect the relative displacement between the measuring rod and the frame after the measuring rod overcomes the elastic force of the elastic member, and to judge whether the crimping contact between the terminal and the transformer to be measured is successful or unsuccessful based on the relative displacement.

[0008] Furthermore, a horizontally arranged pressure plate is connected to the measuring rod, and the sensor is mounted on the pressure plate via a buckle-type fixing bracket.

[0009] Furthermore, the sensor is a pull-rope displacement sensor, a pulley is rotatably connected to the pressure plate, the steel wire rope of the pull-rope displacement sensor is slidably engaged with the pulley, and the pulling head of the steel wire rope is fixedly mounted on the frame by bolts.

[0010] Furthermore, the elastic member is a spring, one end of the spring abuts against the inner top wall of the hole, and the other end of the spring abuts against the pressure plate on the measuring rod.

[0011] Furthermore, an upper bushing and a lower bushing are provided in the hole, the upper bushing and the lower bushing are respectively interference fit with the frame, and the upper bushing and the lower bushing are respectively clearance fit with the measuring rod.

[0012] Furthermore, the wiring terminal is detachably mounted on the measuring rod via a threaded connection.

[0013] A transformer crimping fault detection device, comprising: a tooling tray, a driving member, a guide rod, a drag chain, a control system, and a sensor clamping mechanism according to any one of the above solutions; The driving member is connected to the truss of the sensor clamping mechanism, and the driving member is used to drive the truss to move up and down, and the driving member has a magnetic induction switch; The tooling tray is installed on the assembly line, and the transformer to be tested is placed on the tooling tray; The drag chains are symmetrically distributed, and one end of the two drag chains is connected to the truss; There are two symmetrically distributed guide rods, which are installed on the truss and pass upward through the guide block fixed above the truss; The connection terminal of the sensor clamping mechanism is electrically connected to the control system via a first test line, and the pull rope displacement sensor of the sensor clamping mechanism is electrically connected to the control system via a second test line; The first test line and the second test line respectively pass through the collection holes of the truss.

[0014] Furthermore, the pressing plate on the measuring rod of the sensor clamping mechanism has an end hole, and the first test line passes through the end hole.

[0015] A detection method for a transformer crimping fault detection device based on the above solution comprises the following steps: Step 1: After the driving member drives the truss frame downward to a specified height, the pull-wire displacement sensor detects the relative displacement S between the measuring rod and the frame after the measuring rod overcomes the elastic force of the elastic member; Step 2: The pull-wire displacement sensor converts the relative displacement S into digital voltage information and transmits the collected digital voltage information to the video image monitoring host of the control system. The video image monitoring host obtains the position data of the corresponding wiring terminal. The control system also includes a monitoring alarm module, a video image monitoring host, a video image acquisition module, an image transmission device module, an image processing module, and an image recognition model; Step 3: The video image monitoring host converts the collected voltage information into displacement information, and compares the displacement information with the normal displacement range information. If the measured displacement information is within the normal displacement range stored in the system, it is determined that the terminal crimping contact is successful and the subsequent verification procedure is executed. If the measured displacement information exceeds the normal displacement range, it is determined that the contact position exceeds the standard, and then it is determined that the terminal crimping fault has occurred; Step 4: The video image acquisition module starts and captures the video image of the corresponding workstation. The captured video image information is transmitted to the video image monitoring host through the image transmission device module; Step 5: The video image monitoring host starts the image processing module and image recognition model, performs video image analysis and recognition through digital image processing and a YOLOv11-based deep learning model, and determines the corresponding fault mode in the image information; Step 6: After the video image monitoring software identifies a fault, the verification system will interrupt operation and activate an alarm.

[0016] Furthermore, the following steps are further provided after step 6: After the monitoring alarm module sounds and sounds an alarm, the on-site staff will send a prompt to the HMI production monitoring host based on the video image monitoring host to the wiring fault system and take corresponding troubleshooting measures Compared with the prior art, the present invention has the following effects: The sensor clamping mechanism provided by the present invention can detect the relative displacement between the measuring rod and the frame by the displacement sensor. If the relative displacement is within the normal range, the crimping of the wiring terminal is successful. If the relative displacement exceeds the normal displacement range, a crimping failure occurs at the wiring terminal. The system thus determines that the crimping between the wiring terminal of the transformer to be tested and the wiring terminal has failed, automatically identifies the crimping failure of the wiring terminal, and improves the operation efficiency of the assembly line.

[0017] The transformer crimping fault detection device provided by the present invention realizes rapid displacement measurement through real-time monitoring of the position of the terminal head. If the relative displacement exceeds the normal displacement range, the system automatically starts the video image acquisition module to collect fault image information in real time, and uses the image transmission module to transmit the information to the host computer. By calling the image recognition model, the terminal crimping fault mode is identified in real time and displayed and the corresponding fault monitoring alarm prompt is given. The rapid identification of the fault is not only convenient for immediate fault handling, but the detected fault data information is also convenient for subsequent control and analysis of the system.

[0018] The present invention provides a detection method for a transformer crimping fault detection device. When position monitoring is abnormal, the system automatically identifies the terminal crimping fault mode and performs fault monitoring alarm warning. The automated calibration system interrupts calibration or switches to manual control. The staff takes corresponding fault handling measures according to the identified fault mode under the alarm prompt. On the basis of the current assembly line calibration system, an additional terminal crimping fault detection device is developed in a timely manner. The system can automatically determine the assembly line operation fault mode, reduce the time cost of manual detection, and help improve the system calibration efficiency and optimize the assembly line production rhythm.

[0019] The detection method of the detection device for transformer crimping fault provided by the present invention can not only reduce the occurrence of misjudgment of verification, but also perform real-time collection and extraction of corresponding fault video image information at the same time as the terminal crimping fault occurs, which is conducive to the subsequent management and control analysis of system reliability fault information and reliability growth, and the real-time monitoring and early warning testing method, avoids the waste of resources caused by the continuous operation of the monitoring equipment, and can greatly save the storage space of the monitoring equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Enlarged view of the middle measuring rod; Figure 3 yes Figure 2 Side view of; Figure 4 yes Figure 2A partial cross-sectional view of Figure 5 yes Figure 4 Cross-sectional view at AA in the middle; Figure 6 yes Figure 4 Cross-sectional view at the middle BB; Figure 7 yes Figure 2 Enlarged view of the center cable collection hole; Figure 8 This is a schematic diagram of the first state of the crimping terminal being successfully crimped; Figure 9 This is a schematic diagram of the second state of the crimping terminal being successfully crimped; Figure 10 This is a schematic diagram of the third state of the crimping terminal being successfully crimped; Figure 11 This is a schematic diagram of the first state of the crimping end failing; Figure 12 This is a schematic diagram of the second state of the crimping end failing; Figure 13 It is a schematic flow chart of the detection method of the present invention.

[0021] In the figure: 1. Truss; 2. Frame; 3. Measuring rod; 4. Elastic part; 5. Sensor; 6. Hole; 7. Wiring terminal; 8. Pressure plate; 9. Pulley; 10. Wire rope; 11. Pull head; 12. Upper bushing; 13. Lower bushing; 14. Tooling tray; 15. Driving part; 16. Guide rod; 17. Drag chain; 18. Cable collection hole; 19. Magnetic induction switch; 20. Guide block; 21. Pre-insulated terminal; 22. First test line; 23. Second test line; 24. End hole. DETAILED DESCRIPTION

[0022] Specific implementation method 1: Combination Figures 1 to 4Describing this embodiment, this embodiment includes a truss 1 and a wiring assembly, the wiring assembly has multiple groups distributed at intervals, the wiring assembly includes a frame 2, a measuring rod 3, an elastic member 4 and a sensor 5, the frame 2 is vertically installed on the bottom surface of the truss 1, the frame 2 has a hole 6 with an opening facing downward, the measuring rod 3 is slidably installed in the hole 6, the bottom end of the measuring rod 3 is connected to a wiring terminal 7 for crimping with the wiring terminal of the transformer to be measured, the elastic member 4 is connected to the measuring rod 3, the elastic member 4 has an elastic force that pushes the measuring rod 3 to slide downward, the sensor 5 is installed on the frame 2 or the measuring rod 3, and the sensor 5 is used to detect whether the measuring rod 3 overcomes the elastic force. The relative displacement between the elastic force of the elastic member 4 and the frame 2 is used to judge whether the body of the transformer to be tested is tilted or whether the positioning of the tooling tray 14 is accurate. When the truss 1 drives the wiring assembly to move down to the specified height as a whole, if the position of the transformer is normal, the wiring terminal 7 of the measuring rod 3 will abut against the wiring terminal of the transformer to achieve electrical contact, pushing the measuring rod 3 to overcome the elastic force of the elastic member 4 and move upward. At this time, the relative displacement between the measuring rod 3 and the frame 2 can be used to judge whether the crimping contact between the wiring terminal 7 and the transformer to be tested is successful or unsuccessful. The elastic member 4 can achieve a flexible connection of electrical contact, thereby avoiding positioning deviation problems caused by the processing and manufacturing errors of the transformer itself.

[0023] The sensor clamping mechanism provided in this embodiment can detect the relative displacement between the measuring rod 3 and the frame 2 by the displacement sensor 5. If the relative displacement is within the normal range, the terminal 7 is successfully crimped and in contact. If the relative displacement exceeds the normal displacement range, a crimping failure occurs in the terminal 7. The system thus determines that the crimping failure between the terminal of the transformer to be tested and the terminal 7 is failed, automatically identifies the terminal crimping failure, and improves the operation efficiency of the assembly line.

[0024] Specific implementation method 2: Combination Figure 2 、 Figure 4 This embodiment differs from the first embodiment in that a horizontally mounted pressure plate 8 is connected to the measuring rod 3. The sensor 5 is mounted on the pressure plate 8 via a clip-on mounting bracket. The pressure plate 8 moves with the measuring rod 3, thereby measuring the relative displacement between the frame 2 and the measuring rod 3. The remaining components and connections are the same as those in the first embodiment.

[0025] Specific implementation method three: Combination Figures 2 to 6This embodiment is described. The difference between this embodiment and the second embodiment is that the sensor 5 is a rope displacement sensor. The pressure plate 8 is rotatably connected to a pulley 9. The wire rope 10 of the rope displacement sensor slides with the pulley 9. The pull head 11 of the wire rope 10 is fixed to the frame 2 by bolts. In this embodiment, the pulley 9 acts as a guide, dividing the wire rope 10 into horizontal and vertical sections. The pull head 11 is located on the vertical section. When the rope displacement sensor body moves with the measuring rod 3, the pull head 11 does not move, which causes the length of the wire rope 10 to change, thereby measuring the relative displacement. The other components and connection relationships are the same as those of the second embodiment.

[0026] Specific implementation method four: Combination Figure 4 This embodiment differs from the first embodiment in that the elastic member 4 is a spring. One end of the spring abuts the inner top wall of the hole 6, and the other end abuts the pressure plate 8 on the measuring rod 3. A gasket is provided between the spring and the pressure plate 8. The spring's elastic force is applied to the pressure plate 8 and then transmitted to the measuring rod 3, thereby achieving a flexible electrical contact. The remaining components and connections are the same as those in the first embodiment.

[0027] Specific implementation method five: Combination Figure 4 This embodiment differs from the first embodiment in that an upper bushing 12 and a lower bushing 13 are provided in the hole 6. The upper bushing 12 and the lower bushing 13 are interference-fit with the frame 2, while the upper bushing 12 and the lower bushing 13 are clearance-fit with the measuring rod 3. The upper bushing 12 and the lower bushing 13 enable the measuring rod 3 to move within the hole 6. Other components and connections are the same as those in the first embodiment.

[0028] Specific implementation method six: combination Figure 2 、 Figure 3 This embodiment differs from the first embodiment in that the terminal block 7 is detachably mounted on the measuring rod 3 via a threaded connection. The terminal block 7 is internally threaded. Once the lower portion of the measuring rod 3 is threadedly connected to the terminal block 7, a set screw is inserted into the cylindrical threaded hole in the terminal block 7 to further secure the connection between the terminal block 7 and the measuring rod 3. The remaining components and connections are the same as those in any of the first to fifth embodiments.

[0029] Specific implementation method seven: combination Figures 1 to 11Explain this embodiment, this embodiment also provides a transformer crimping fault detection device, including: a tooling tray 14, a driving member 15, a guide rod 16, a drag chain 17, a control system and the above-mentioned sensor clamping mechanism, the driving member 15 is connected to the truss 1 of the sensor clamping mechanism, the driving member 15 is used to drive the truss 1 to move up and down, the driving member 15 has a magnetic induction switch 19, in this embodiment, the driving member 15 can be a cylinder, the tooling tray 14 is installed on the assembly line, the tooling tray 14 is placed on the transformer to be tested, the drag chain 17 has two symmetrically distributed, one end of the two drag chains 17 is connected to the The sensor is connected to the truss 1, and the guide rods 16 are symmetrically distributed. The two guide rods 16 are installed on the truss 1 and pass upward through the guide block 20 fixed above the truss 1. The terminal 7 of the sensor clamping mechanism is electrically connected to the control system through the first test line 22. The bottom end of the measuring rod 3 is also connected to the pre-insulated terminal 21. The terminal 7 transmits a signal to the first test line 22 through the pre-insulated terminal 21. The pull rope displacement sensor of the sensor clamping mechanism is electrically connected to the control system through the second test line 23. The first test line 22 and the second test line 23 respectively pass through the collection hole 18 of the truss 1. Other components and connection relationships are the same as any one of the specific embodiments one to six.

[0030] The transformer crimping fault detection device of this embodiment realizes rapid displacement measurement through real-time monitoring of the position of the terminal. If the relative displacement exceeds the normal displacement range, the system automatically starts, and the video image acquisition module acquires fault image information in real time, and uses the image transmission module to transmit the information to the host computer. By calling the image recognition model, the terminal crimping fault mode is identified in real time and displayed and the corresponding fault monitoring alarm prompt is given. The rapid identification of the fault is not only convenient for immediate fault handling, but the detected fault data information is also convenient for subsequent control and analysis of the system.

[0031] Specific implementation method eight: combination Figure 5 This embodiment differs from the seventh embodiment in that the pressure plate 8 on the measuring rod 3 of the sensor clamping mechanism has an end hole 24, through which the first test line 22 passes. This end hole 24 serves as a position limiter for the first test line 22, preventing it from becoming entangled with other first test lines 22. The remaining components and connections are the same as those in the seventh embodiment.

[0032] Specific implementation method nine: Combination Figure 10 This embodiment further provides a detection method for a transformer crimping fault detection device, comprising the following steps: Step 1: After the driving member 15 drives the truss 1 downward to a specified height, the rope displacement sensor detects the relative displacement S between the measuring rod 3 and the frame 2 after the measuring rod 3 overcomes the elastic force of the elastic member 4. In this embodiment, the driving member 15 is a pneumatic cylinder. Step 2: The pull-wire displacement sensor converts the relative displacement S into digital voltage information and transmits the collected digital voltage information to the video image monitoring host of the control system. The video image monitoring host obtains the position data of the corresponding terminal 7. The control system also includes a monitoring alarm module, a video image monitoring host, a video image acquisition module, an image transmission device module, an image processing module, and an image recognition model; Step 3: The video image monitoring host converts the collected voltage information into displacement information, and compares the displacement information with the normal displacement range information. If the measured displacement information is within the normal displacement range stored in the system, it is determined that the crimping contact of the terminal 7 is successful, and the subsequent verification procedure is executed. If the measured displacement information exceeds the normal displacement range, it is determined that the contact position exceeds the standard, and further determines that a crimping failure has occurred in the terminal 7; Step 4: The video image acquisition module starts and captures the video image of the corresponding workstation. The captured video image information is transmitted to the video image monitoring host through the image transmission device module. The image transmission device module is composed of an SCCB bus, an STM32 control subsystem, and a Zigbee line-free module based on CC2530 to achieve communication transmission and data interaction between various parts; Step 5: The video image monitoring host starts the image processing module and image recognition model, performs video image analysis and recognition through digital image processing and a YOLOv11-based deep learning model, and determines the corresponding fault mode in the image information; Step 6: After the video image monitoring software identifies a fault, the verification system interrupts the verification or switches to manual control mode and activates an alarm. Other components and connection relationships are the same as those of the seventh or eighth embodiment.

[0033] The detection method of the transformer crimping fault detection device of this embodiment is that when the position monitoring is abnormal, the system automatically identifies the terminal crimping fault mode and performs fault monitoring alarm warning. The automatic verification system interrupts the verification or switches to manual control. The staff takes corresponding fault handling measures according to the identified fault mode under the alarm prompt. On the basis of the current assembly line verification system, a terminal crimping fault detection device is developed and added in a timely manner. The system can automatically determine the assembly line operation fault mode, reduce the time cost of manual detection, and help to improve the system verification efficiency and optimize the assembly line production rhythm.

[0034] Specific implementation method ten: Combination Figure 10This embodiment differs from Specific Embodiment 9 in that, after step 6, the following step is added: After the monitoring alarm module issues an audible and visual alarm, on-site staff, based on the video image monitoring host, simultaneously notifies the HMI production monitoring host of a wiring fault, allowing appropriate troubleshooting measures to be taken. This reduces the time it would take for the project testing station to misdetect the corresponding CT under test and reduces the risk of misjudging the qualified or unqualified transformer under test. Other components and connections are the same as those in Specific Embodiment 9.

[0035] The content of the present invention is not limited to the content of the above-mentioned embodiments. The combination of one or more specific embodiments can also achieve the purpose of the invention.

Claims

1. A sensor clamping mechanism, characterized in that: include: Truss (1); A wiring assembly having a plurality of groups distributed at intervals, the wiring assembly comprising a frame (2), a measuring rod (3), an elastic member (4) and a sensor (5), the frame (2) being vertically mounted on the bottom surface of the truss (1), the frame (2) having a hole (6) with an opening facing downward, the measuring rod (3) being slidably mounted in the hole (6), and the bottom end of the measuring rod (3) being connected to a wiring terminal (7) for crimping with a wiring terminal of a transformer to be measured; The elastic member (4) is connected to the measuring rod (3), and the elastic member (4) has an elastic force that pushes the measuring rod (3) to slide downward; The sensor (5) is mounted on the frame (2) or the measuring rod (3), and is used to detect the relative displacement between the measuring rod (3) and the frame (2) after the measuring rod (3) overcomes the elastic force of the elastic member (4), and to judge whether the crimping contact between the terminal (7) and the transformer to be measured is successful or unsuccessful based on the relative displacement.

2. A sensor clamping mechanism according to claim 1, characterized in that: A horizontally arranged pressing plate (8) is connected to the measuring rod (3), and the sensor (5) is mounted on the pressing plate (8) via a buckle-type fixing bracket.

3. A sensor clamping mechanism according to claim 2, characterized in that: The sensor (5) is a pull-rope displacement sensor. A pulley (9) is rotatably connected to the pressure plate (8). The steel wire rope (10) of the pull-rope displacement sensor is slidably engaged with the pulley (9). The pull head (11) of the steel wire rope (10) is fixedly mounted on the frame (2) by bolts.

4. A sensor clamping mechanism according to claim 1, characterized in that: The elastic member (4) is a spring, one end of the spring abuts against the inner top wall of the hole (6), and the other end of the spring abuts against the pressure plate (8) on the measuring rod (3).

5. The sensor clamping mechanism according to claim 1, characterized in that: An upper bushing (12) and a lower bushing (13) are provided in the hole (6); the upper bushing (12) and the lower bushing (13) are respectively interference-fitted with the frame (2); and the upper bushing (12) and the lower bushing (13) are respectively clearance-fitted with the measuring rod (3).

6. A sensor clamping mechanism according to any one of claims 1 to 5, characterized in that: The wiring terminal (7) is detachably mounted on the measuring rod (3) via a threaded connection.

7. A transformer crimping fault detection device, characterized in that: include: A tooling pallet (14), a driving member (15), a guide rod (16), a drag chain (17), a control system, and a sensor clamping mechanism according to any one of claims 1 to 6; The driving member (15) is connected to the truss (1) of the sensor clamping mechanism, the driving member (15) is used to drive the truss (1) to move up and down, and the driving member (15) has a magnetic induction switch (19); The tooling tray (14) is installed on an assembly line, and a mutual inductor to be tested is placed on the tooling tray (14); The drag chains (17) are symmetrically distributed, and one end of the two drag chains (17) is connected to the truss (1); The guide rods (16) are symmetrically distributed, and the two guide rods (16) are installed on the truss (1) and pass upward through the guide block (20) fixed above the truss (1); The connection terminal (7) of the sensor clamping mechanism is electrically connected to the control system via a first test line (22), and the pull rope displacement sensor of the sensor clamping mechanism is electrically connected to the control system via a second test line (23); The first test line (22) and the second test line (23) respectively pass through the line collection hole (18) of the truss (1).

8. A transformer crimping fault detection device according to claim 7, characterized in that: The pressing plate (8) on the measuring rod (3) of the sensor clamping mechanism has an end hole (24), and the first test line (22) passes through the end hole (24).

9. A detection method based on the detection device for transformer crimping fault according to claim 7 or 8, characterized in that: The following steps are involved: Step 1: After the driving member drives the truss (1) to descend as a whole to a specified height, the pull rope displacement sensor detects the relative displacement S generated between the measuring rod (3) and the frame (2) after the measuring rod (3) overcomes the elastic force of the elastic member (4); Step 2: The pull rope displacement sensor converts the relative displacement S into digital voltage information, and transmits the collected digital voltage information to the video image monitoring host of the control system, and the video image monitoring host obtains the position data of the corresponding wiring terminal (7). The control system also includes a monitoring alarm module, a video image monitoring host, a video image acquisition module, an image transmission device module, an image processing module and an image recognition model; Step 3: The video image monitoring host converts the collected voltage information into displacement information, and compares the displacement information with the normal displacement range information. If the measured displacement information is within the normal displacement range stored in the system, it is determined that the connection terminal (7) is successfully crimped and contacted, and a subsequent verification procedure is performed. If the measured displacement information exceeds the normal displacement range, it is determined that the contact position exceeds the standard, and further determines that a crimping failure occurs in the connection terminal (7); Step 4: The video image acquisition module starts and captures the video image of the corresponding workstation. The captured video image information is transmitted to the video image monitoring host through the image transmission device module; Step 5: The video image monitoring host starts the image processing module and image recognition model, performs video image analysis and recognition through digital image processing and a YOLOv11-based deep learning model, and determines the corresponding fault mode in the image information; Step 6: After the video image monitoring software identifies a fault, the verification system will interrupt operation and activate an alarm.

10. The detection method of a transformer crimping fault detection device according to claim 9, characterized in that: After step 6, the following steps are further provided: After the monitoring alarm module sounds an audible and visual alarm, the on-site staff will synchronously notify the HMI production monitoring host of the wiring fault system based on the video image monitoring host and take corresponding fault handling measures.

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