High-speed motor train unit electrical connector pin state detection device

Abstract

The utility model discloses a pin state detection device for an electrical connector of a high-speed motor train unit. The pin state detection device comprises a box body, a test unit, a test joint and a man-machine interaction and control module. A portable suitcase is used as a protective shell and an equipment carrier; three test units and a man-machine interaction module are installed in the test box, and the test units can fix a tested electrical connector and execute a test task. The man-machine interaction and control module has the functions of feeding back the test condition and controlling the test unit; the core component of the test unit is a modularized test connector which is matched with the type of the tested electrical connector one by one, and the installation state of each pin in the tested connector can be uniformly tested. The equipment is used for detecting pins in a joint of an electrical connector of a sensor on a bogie of a motor train unit, and the detection efficiency can be improved, so that various safety risks caused by missing detection and repair are avoided.

Description

Technical Field

[0001] This technical solution mainly involves EMU technology-related fields, especially the field of EMU maintenance operations. Background Art

[0002] High-speed train sensors monitor various operating parameters, such as axle and axlebox temperatures and wheel speeds, to ensure proper operation. Sensor connector pin status testing involves verifying the installation status and retention force of the connecting pins within the sensor terminals. This process requires removing the terminals and individually verifying whether the pins are properly installed, whether the retention force meets the specified value, and whether any pins are loose or locked. Currently, on-site operators manually press the pins within the terminals, relying on touch and experience to determine whether any pins are loose, which can lead to loose connections or disconnections during operation. This primitive and inefficient method cannot guarantee that each pin is pressed firmly and evenly, nor can it accurately determine whether the pressure meets the specified retention force. This creates the risk of missed detections and false detections, potentially leading to sensor malfunction and potentially posing a safety hazard to EMU trains. Existing testing technologies are primarily used on assembly lines and in laboratories, making them unsuitable for use in production environments. Furthermore, they cannot accurately measure pin retention force and provide a reliable criterion for determining whether the pins are loose.

[0003] Therefore, it is necessary to develop a more efficient and accurate test tool that can intuitively reflect the actual installation status and stress conditions of each pin, so as to accurately and quickly determine whether the specified installation requirements are met, improve detection efficiency, and ensure that various safety risks caused by missed inspections and missed repairs are avoided. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a high-speed train electrical connector pin status detection device to solve the problems existing in the above-mentioned prior art.

[0005] The technical solution adopted by the utility model is: a high-speed EMU electrical connector pin status detection device, characterized in that: it includes a test unit, a test connector, a human-computer interaction and control module and a box; wherein the test unit and the human-computer interaction and control module are installed inside the box, the test unit is used to measure the electrical connector pin status, and the human-computer interaction and control module is used to control the operation of the equipment; the test connector is installed on the test unit for connecting to the electrical connector.

[0006] The test unit includes a test joint, a push rod, a tested joint fixing seat, a base, and a linear bearing; the test joint is fixed on the linear bearing through a bracket and can slide along the bearing straight line, and one end is connected to the push rod; the other end of the push rod is connected to the base, and the push rod is used to provide power to push the test joint to press the tested electrical connector; the tested joint fixing seat and the linear bearing are both fixed on the base.

[0007] The test connector includes a test plug, a middle connection, a tail connection base, a sensor base, a thin film pressure sensor, a pressure needle, a spring, and a probe; wherein the test plug, the middle connection and the tail connection base are connected in sequence by bolts; the test plug corresponds to the shape of the electrical connector to be tested, and is provided with holes corresponding to the pins in the electrical connector to be tested, and the pressure needle, spring, and probe are installed in sequence and can slide; the sensor base is installed in the tail connection base; the thin film pressure sensor is installed on the sensor base, and the pressure needle just presses the thin film pressure sensor.

[0008] The human-machine interaction and control module is used to drive the push rod motor, collect data returned by the film pressure sensor and display it on the touch screen, and start and stop the detection process according to the operator's operation of the touch screen. Beneficial effects

[0009] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention adopts a suitcase shell as a whole, which is small and easy to carry; a push rod is used to push the test head to measure the pin holding force, which saves the operator's physical strength and avoids the uneven force caused by manual operation and the resulting measurement error; a quick docking test head that matches the connector to be tested is used, and one end of the probe presses the pin to be tested, and the other end presses the thin film resistor pressure sensor, and the sensor voltage is converted into pressure to measure the pin holding force; a built-in operation and control system is used, and the human-computer interaction through the touch screen makes the measurement simple and fast. The device has a simple structure and accurate measurement values ​​that are not affected by external factors. Compared with the existing mechanical needle shrinkage detection syringe, the measurement value is more accurate, the measurement result can be fed back in real time, and all the pins of the sensor connector can be measured at one time, so as to accurately and quickly determine whether the specified installation requirements are met, improve the detection efficiency, provide a data basis for its fault detection and discover potential risks, promote the precise maintenance of EMU components, and ensure that various safety risks caused by missed inspections and missed repairs are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the overall framework structure diagram;

[0011] Figure 2 This is the overall structure diagram of the device;

[0012] Figure 3 This is the structural diagram of the detection unit;

[0013] Figure 4 This is the structural diagram of the test joint;

[0014] Figure 5 It is a detection flow chart;

[0015] Explanation of the accompanying symbols: test unit 01, test connector 02, human-computer interaction and control module 03, box 04, push rod 05, tested connector fixing seat 06, base 07, linear bearing 08, test plug 09, middle connection 10, tail connection base 11, sensor base 12, thin film pressure sensor 13, pressure needle 14, spring 15, probe 16. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1: Figure 1-4 As shown, a high-speed EMU electrical connector pin status detection device includes a test unit 01, a test connector 02, a human-machine interaction and control module 03 and a box 04; wherein the test unit 01 and the human-machine interaction and control module 03 are installed inside the box 04; the test connector 02 is installed on the test unit 01, and the modular design of the test connector can be quickly replaced.

[0018] The test unit 01 includes a test connector 02, a push rod 05, a tested connector fixing seat 06, a base 07, and a linear bearing 08; the test connector 02 is fixed to the linear bearing 08 through a bracket and can slide linearly along the bearing 08, and one end is connected to the push rod 05; the other end of the push rod 05 is connected to the base 07, and the push rod 05 is used to provide power to push the test connector 02 to press against the tested electrical connector; the tested connector fixing seat 06 and the linear bearing 08 are both fixed on the base 07.

[0019] The test connector 02 includes a test plug 09, a middle connection 10, a tail connection base 11, a sensor base 12, a thin film pressure sensor 13, a pressure needle 14, a spring 15, and a probe 16; wherein the test plug 09, the middle connection 10 and the tail connection base 11 are connected in sequence by bolts; the test plug 09 corresponds to the shape of the electrical connector to be tested, and is provided with holes corresponding to the pins in the electrical connector to be tested, and the pressure needle 14, the spring 15, and the probe 16 are installed in sequence and can slide; the sensor base 12 is installed in the tail connection base 11; the thin film pressure sensor 13 is installed on the sensor base 12, and the pressure needle 14 just presses the thin film pressure sensor 13.

[0020] The human-machine interaction and control module 03 is used to drive the push rod motor 05, collect data returned by the film pressure sensor 13 and display it on the touch screen, and start and stop the detection process according to the operator's operation of the touch screen.

[0021] The working contents of the high-speed train electrical connector pin status detection device include: 1. Electrical connector pin status detection.

[0022] Electrical connector pin status detection: The operator first installs the electrical connector to be tested on the tested connector fixing seat 06, and selects the corresponding plug shape on the touch screen of the human-computer interaction and control module 03, and presses the start button to start the test. Figure 5 In the test process shown, the device first determines whether the test connector 02 in the test unit 01 has returned to zero. If not, it drives the push rod 05 to retract, returning the connector 02 to its original position. The push rod 05 is then extended, causing the test connector 02 to press against the electrical connector under test. The internal probe 16 squeezes against the pins within the connector, while the spring 15 compresses. The pressure pin 14 applies the spring pressure to the thin film pressure sensor 13. The human-computer interaction and control module 03 collects the various squeezing pressures and determines whether they have reached a reasonable value. If so, the electrical connector under test passes. If not, it then determines whether any pins have reached the maximum reasonable pressure. If so, the test ends and the electrical connector under test fails, indicating a pin retraction. If not, there is a problem with the installation. The push rod 05 is then driven to retract, returning the test connector 02 to zero, and the test ends.

[0023] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A device for detecting the pin status of an electrical connector of a high-speed train, characterized in that: The invention comprises a test unit (01), a test connector (02), a human-machine interaction and control module (03) and a box (04); wherein the test unit (01) and the human-machine interaction and control module (03) are installed inside the box (04); and the test connector (02) is installed on the test unit (01).

2. The high-speed train electrical connector pin status detection device according to claim 1, characterized in that: The test unit (01) comprises a test joint (02), a push rod (05), a tested joint fixing seat (06), a base (07), and a linear bearing (08); the test joint (02) is fixed on the linear bearing (08) and can slide along the linear direction of the bearing, and one end is connected to the push rod (05); the other end of the push rod (05) is connected to the base (07); the tested joint fixing seat (06) and the linear bearing (08) are both fixed on the base (07).

3. The high-speed train electrical connector pin status detection device according to claim 1, characterized in that: The test connector (02) comprises a test plug (09), a middle connection (10), a tail connection base (11), a sensor base (12), a thin film pressure sensor (13), a pressure needle (14), a spring (15), and a probe (16); wherein the test plug (09), the middle connection (10), and the tail connection base (11) are sequentially connected by bolts; the test plug (09) corresponds to the shape of the electrical connector to be tested, and is provided with holes corresponding to the pins in the electrical connector to be tested, and the pressure needle (14), the spring (15), and the probe (16) are sequentially installed therein and can slide; the sensor base (12) is installed in the tail connection base (11); the thin film pressure sensor (13) is installed on the sensor base (12), and the pressure needle (14) just presses the thin film pressure sensor (13).

4. The high-speed train electrical connector pin status detection device according to claim 1, characterized in that: The human-machine interaction and control module (03) is used to drive the push rod motor, collect data returned by the film pressure sensor (13) and display it on the touch screen, and start and stop the detection process according to the operator's operation of the touch screen.

Images