CN214895730U

CN214895730U - Low-voltage grounding detection device for motor train unit

Info

Publication number: CN214895730U
Application number: CN202121516281.8U
Authority: CN
Inventors: 金冲; 罗昭强; 韩东宁; 姜雪飞; 林伟东
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-11-26
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a EMUs low pressure ground connection detection device belongs to EMUs detection technology field, including the organism, audible-visual annunciator and handle are fixedly installed at the top of organism, inlay on the lateral wall of organism and install PLC display screen, voltmeter and total accuse button, the inside of organism is equipped with the mounting groove, be connected with ground clamp and detection clamp through the wire respectively on the both sides outer wall of organism; the utility model discloses can effectively replace artificial spot check's method, can prevent effectively that artificial fatigue and error from, lead to the test result inaccurate to this device is more intelligent, can monitor in real time, and carries out the record, and this system is independent, can not interfere with other equipment of vehicle, can be fast, accurate, swift, intelligent analysis and troubleshooting through this device, thereby guarantee the safe and reliable of EMUs operation.

Description

Low-voltage grounding detection device for motor train unit

Technical Field

The utility model belongs to the technical field of the EMUs detect, especially, relate to a EMUs low pressure ground connection detection device.

Background

The low voltage of the motor train unit DC110V to the ground can cause potential hidden troubles to vehicle electrical equipment, and the safety factor of the motor train unit is reduced. The low voltage of the motor train unit is recorded in the ground only in the charger, and the driver cannot prompt on a display screen after the motor train unit is grounded; the monitoring software can be used for observing in real time or randomly checking and verifying whether the ground of the vehicle is grounded through a multimeter measurement method in the debugging process, fault points are difficult to find and search for discontinuous ground faults, and a low-voltage grounding detection device for the motor train unit is urgently needed in order to effectively check the potential hidden danger of the motor train unit.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, the invention provides a low-voltage grounding detection device for a motor train unit.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a EMUs low pressure ground connection detection device, includes the organism, the top fixed mounting of organism has audible-visual annunciator and handle, inlay on the lateral wall of organism and install PLC display screen, voltmeter and total control button, the inside of organism is equipped with the mounting groove, be connected with ground connection clamp and detection clamp through the wire respectively on the both sides outer wall of organism.

As a further description of the above technical solution:

two audible and visual alarms are symmetrically arranged around the longitudinal central axis of the machine body.

As a further description of the above technical solution:

and an air switch is fixedly arranged on the inner wall of the mounting groove.

As a further description of the above technical solution:

a touch panel is embedded in the mounting groove, and an emergency stop button and a mute button are arranged on one side of the touch panel.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses in, the device can effectively replace the method of artificial selective examination, can prevent effectively that artificial fatigue and error from, lead to the test result inaccurate to this device is more intelligent, can monitor in real time, and carry out the record, and this system is independent, can not interfere with other equipment of vehicle, can be fast, accurate, swift, intelligent analysis and troubleshooting through this device, thereby guarantee the safe and reliable of EMUs operation.

Drawings

Fig. 1 is a schematic perspective view of a detection device for a ground base of a motor train unit.

Fig. 2 is a circuit diagram of a low-voltage grounding detection device of a motor train unit.

Illustration of the drawings:

1. an audible and visual alarm; 2. an air switch; 3. a voltmeter; 4. a master control button; 5. a body; 6. an emergency stop button; 7. a mute button; 8. a touch panel; 9. a PLC display screen; 10. a grounding clip; 11. mounting grooves; 12. and (6) detecting the clip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a low-voltage grounding detection device for a motor train unit comprises a motor train unit body 5, wherein an audible and visual alarm 1 and a handle are fixedly mounted at the top of the motor train unit body 5, a PLC display screen 9, a voltmeter 3 and a master control button 4 are mounted on the side wall of the motor train unit body 5 in an embedded mode, a mounting groove 11 is formed in the motor train unit body 5, and the outer walls of the two sides of the motor train unit body 5 are respectively connected with a grounding clamp 10 and a detection clamp 12 through wires;

audible-visual annunciator 1 installs two about the longitudinal center pin symmetry of organism 5, fixed mounting has air switch 2 on the inner wall of mounting groove 11, the inside of mounting groove 11 is inlayed and is installed touch panel 8, one side of touch panel 8 is provided with emergency stop button 6 and silence button 7.

Referring to fig. 1-2, the embodiments are: the device can record and report the times and time of positive grounding faults or negative grounding faults, send out sound and light alarm when faults occur to prompt related personnel to find the faults and help the testing personnel to check the faults, can temporarily cancel the sound reported when the alarms are given after a mute button 7 is pressed, and can record, download and delete data to help the testing personnel to analyze and judge the faults.

The working principle is as follows: the device is carried to a working area through a handle, when the device is used, a positive electrode voltage signal or a negative electrode voltage signal is tested, the ground wire is connected with the ground wire through a yellow-green grounding clamp 10, the device can record and report the frequency and time of positive grounding faults or negative grounding faults, and the audible and visual alarm 1 gives out audible and visual alarm when faults occur to prompt related personnel to find the faults so as to help the testing personnel to check the faults, after a mute button 7 is pressed, the sound reported when the alarm is temporarily cancelled, meanwhile, data can be recorded, downloaded and deleted so as to help the testing personnel to analyze and judge the faults, when in specific testing, the low-voltage is DC110V, when a starting switch is not closed, the voltage in the device is detected, and at the moment, a voltmeter displays 0V; the voltage of the normal voltmeter is U power/(R1 + R3) R3, when R2 is inactive, the voltage is about 55V; transmitting the voltage value to a voltmeter for displaying, and transmitting a voltage signal to the PLC for judging and recording whether the voltage meets the requirement; when the positive wire and the negative wire are simultaneously grounded, the air circuit breaker is arranged on a vehicle, and when the vehicle is simultaneously grounded, the air circuit breaker of the vehicle is automatically disconnected, in the process, the voltage cannot be detected in the detection device, when the positive wire is grounded, the ground wire is equivalent to a short-circuit wire, the resistor R1 and the resistor R3 are firstly connected in parallel and are connected with the R2 in series, the voltmeter measures the voltage value of R2, so that the voltage at two ends of the voltmeter is U positive pole-U power/(1/R1 +1/R2+ R3) R3, the voltage at the moment is about 72.5V, when the negative wire is grounded, the resistor R2 and the R3 are connected in parallel and are connected with the R1 in series, the voltmeter measures the power at two ends of R2, the voltage at two ends of the voltmeter is U positive pole-U power/(1/R3 +1/R2+ R1) R1, the voltage at the moment is about 25.5V, and the voltage at the moment is within the normal voltage range <72.5, the fact that the interior of the line is not grounded at the moment is shown, the capacitor C1 plays a role in protection in the process of charging and discharging in the line, when the voltage is larger than 75.5V or smaller than 25.5V, it is shown that the vehicle has a low-to-low phenomenon, information at the moment is transmitted to the PLC through a hard wire, the PLC judges, when the voltage exceeds the upper limit and the lower limit, the PLC triggers the audible and visual alarm 1 to give an alarm, and simultaneously records the sequence number, time and ground type of the alarm.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a EMUs low pressure ground connection detection device, includes organism (5), its characterized in that: the top fixed mounting of organism (5) has audible-visual annunciator (1) and handle, inlay on the lateral wall of organism (5) and install PLC display screen (9), voltmeter (3) and total control button (4), the inside of organism (5) is equipped with mounting groove (11), be connected with ground connection clamp (10) and detection clamp (12) through the wire on the both sides outer wall of organism (5) respectively.

2. The low-voltage grounding detection device for the motor train unit according to claim 1, wherein two audible and visual alarms (1) are symmetrically arranged about a longitudinal central axis of the motor train unit body (5).

3. The low-voltage grounding detection device for the motor train unit as claimed in claim 1, wherein an air switch (2) is fixedly mounted on the inner wall of the mounting groove (11).

4. The low-voltage grounding detection device for the motor train unit according to claim 1, wherein a touch panel (8) is embedded in the mounting groove (11), and an emergency stop button (6) and a mute button (7) are arranged on one side of the touch panel (8).