CN212473430U

CN212473430U - Monitoring system for unpowered loopback state of metro vehicle

Info

Publication number: CN212473430U
Application number: CN202021536224.1U
Authority: CN
Inventors: 孟繁辉; 高靖添; 尚小菲
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-02-05
Anticipated expiration: 2030-07-29

Abstract

A monitoring system for unpowered loopback state of a subway vehicle relates to a railway vehicle braking system, solves the problems that the prior monitoring technology for a subway train needs a worker to monitor in the subway vehicle and is realized by activating a network system of the train, and cannot realize long-time real-time monitoring due to the limitation of the working environment in the subway vehicle, and the like, and comprises a monitoring device, five alarms, three pressure switches, a pressure sensor, an electromagnetic valve, a pneumatic piston valve and an electrified contact cut-off plug door which are arranged in a loopback vehicle; the utility model monitors the power supply and braking state of the subway train in real time, and can automatically analyze and send out acousto-optic alarm signals to remind workers to timely process and prevent accidents when the power supply abnormality, the air supply abnormality and the braking state abnormality occur in the subway train; when abnormal emergency braking occurs to the subway train, the train pipes can be automatically discharged, so that the locomotive can synchronously apply emergency braking, and safety problems such as vehicle wheel pair scratch, returning coupler breakage and the like are prevented.

Description

Monitoring system for unpowered loopback state of metro vehicle

Technical Field

The utility model relates to a rail vehicle braking system, concretely relates to railcar does not have power status monitoring system that loops back.

Background

At present, after the subway vehicles are manufactured by manufacturing enterprises, the subway vehicles are generally transported to an operation city by locomotive traction without power after being compiled and hung on a return trolley. Because different braking systems are adopted for the subway vehicle and the locomotive, the transmission of braking instructions of the two braking systems is realized through a loopback device, and the synchronous braking of the locomotive and the subway train is ensured. However, because the subway train braking system is not directly connected with the locomotive, if the subway train braking system has faults of insufficient braking force, unreleasable parking brake, unreleasable air brake, accidental application of emergency brake and the like caused by low air supply pressure during returning, the escort personnel in the returning train cannot acquire the subway train, and cannot inform the locomotive driver of stopping the train in the first time, so that the safety problems of wheel pair scratch, brake shoe embedding or overheating, train braking force insufficiency and the like of the subway train can be caused. When multiple long-marshalling subway trains are sent back, if the emergency braking condition is accidentally applied to the subway trains, the locomotives still pull, and if the condition cannot be found in time, the major problems of the scratch of the train wheel sets, the breakage of the sending-back couplers and the like are caused, and if the subway trains are sent back only by single marshalling, the sending-back efficiency is greatly reduced.

In order to monitor the fault condition of the subway train in the prior art, workers always monitor in the subway train and need to activate a network system of the subway train, but because the subway train is not provided with air conditioners, electric heaters, toilets, kitchens and other equipment in the returning process, the workers cannot stay in the subway train for a long time for long-distance transportation, particularly in cold winter and hot summer.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve and to have now to the subway train monitoring technology need the staff to monitor in the subway car to network system through the activation train realizes, because the operational environment restriction in the subway car, can't realize long-time real time monitoring scheduling problem, provides a subway vehicle unpowered loopback state monitored control system.

The unpowered loopback state monitoring system for the metro vehicle comprises a monitoring device, five alarms, three pressure switches, a pressure sensor, an electromagnetic valve, a pneumatic piston valve and a live contact cut-off plug valve, wherein the monitoring device is arranged in a loopback vehicle;

the monitoring device is electrically connected with a power supply line, an emergency braking control line, a braking release state line and a parking braking state line of the returned subway train braking system; the five alarms are electrically connected with the monitoring device; the electromagnetic valve is connected with the pneumatic piston valve through a gas circuit and is also electrically connected with an emergency brake control line of a subway train;

the pressure sensor is connected with a train pipe gas circuit of the returning vehicle and is electrically connected with the monitoring device; the first pressure switch is connected with a main air pipe air path which runs through the return vehicle and the subway vehicle, and is also electrically connected with the monitoring device; the second pressure switch is connected with the air path of the brake cylinder pipe of the return vehicle and is electrically connected with the monitoring device; the third pressure switch is connected with the electromagnetic valve and the electrified contact cut-off cock, and is electrically connected with the monitoring device; the electrified contact cut-off cock is connected with the air passage of the pneumatic piston valve.

The train pipe of the returning vehicle is connected with the air circuit of the braking system of the locomotive, the returning device arranged in the returning vehicle is connected with the air circuit of the train pipe, and the returning device converts the pneumatic braking signals transmitted by the braking system of the locomotive through the train pipe into electric braking command signals and transmits the electric braking command signals to the braking system of the subway train.

The utility model has the advantages that: unpowered loopback state monitored control system of railcar, both can realize the control and the warning to subway train braking system trouble in loopback the car, also can solve many marshalling subway train when loopback locomotive accident emergency braking condition appear under locomotive and subway train's the asynchronous probably lead to coupler fracture problem of braking.

The unpowered loopback state monitoring system of the metro vehicle can monitor the power supply and braking states of the metro train in real time, and when the power supply abnormality, the air supply abnormality and the braking state abnormality occur to the metro train, the unpowered loopback state monitoring system can automatically analyze and send out an acousto-optic alarm signal to remind workers to pay attention, and can timely process and prevent accidents; meanwhile, when abnormal emergency braking occurs to the subway train, the train pipe can be automatically discharged, so that the locomotive can synchronously apply emergency braking, and safety problems such as vehicle wheel pair scratching, returning coupler breakage and the like are prevented.

(1) The subway loopback staff can complete the monitoring of the state of the subway train braking system in the loopback vehicle, and the monitoring comprises the faults of power supply abnormity, unexpected power loss of an emergency braking control line, failure in braking release, failure in braking application, abnormity of total wind pressure, failure in parking braking release and the like.

(2) The utility model discloses can gather subway car and the various information that loopback the car in real time to the aassessment is sent corresponding audible and visual alarm according to the fault condition is automatic, and the staff of being convenient for judges the trouble of emergence rapidly and handles.

(3) The utility model provides a many marshalling loopback under the condition, the subway train accident is applyed emergency braking and is leaded to loopbacking the not enough safety problem of coupling intensity, can realize many marshalling loopback through the synchronous application emergency braking that can monitor, improves and loopbacks efficiency, practices thrift and loopbacks the cost.

Drawings

Fig. 1 is a schematic block diagram of a system for monitoring unpowered loopback state of a metro vehicle according to the present invention.

Detailed Description

First embodiment, the present embodiment is described with reference to fig. 1, and a system for monitoring a non-powered return state of a railcar includes a monitoring device 1, a first alarm 2, a second alarm 3, a third alarm 4, a fourth alarm 5, a fifth alarm 6, a first pressure switch 7, a second pressure switch 8, a third pressure switch 9, a pressure sensor 10, an electromagnetic valve 11, a pneumatic piston valve 12, and a live contact cutoff cock 13, which are installed in a return car;

the monitoring device 1 is electrically connected with a power supply line, an emergency braking control line, a braking release state line and a parking braking state line of a returned subway train braking system; the first alarm 2, the second alarm 3, the third alarm 4, the fourth alarm 5 and the fifth alarm 6 are electrically connected with the monitoring device 1; the electromagnetic valve 11 is connected with the pneumatic piston valve 12 through a gas circuit and is also electrically connected with an emergency brake control line of a subway train; the pressure sensor 10 is connected with a train pipe gas path of the return train and is also electrically connected with the monitoring device 1; the first pressure switch 7 is connected with a main air pipe air path which runs through the return vehicle and the subway vehicle, and is electrically connected with the monitoring device 1; the second pressure switch 8 is connected with the air path of the brake cylinder pipe of the return vehicle and is also electrically connected with the monitoring device 1; the third pressure switch 9 is connected to the solenoid valve 11 and the live contact shutoff valve 13, and is also electrically connected to the monitoring device 1. The charged contact cutoff cock 13 is connected with the pneumatic piston valve 12 through an air circuit.

The train pipe of the returning vehicle is connected with the air circuit of the braking system of the locomotive, the returning device arranged in the returning vehicle is connected with the air circuit of the train pipe, and the returning device converts pneumatic braking signals transmitted by the braking system of the locomotive through the train pipe into electric braking command signals and transmits the electric braking command signals to the braking system of the subway train through a braking command line for communicating the returning vehicle with the subway train.

In the embodiment, the monitoring device is adopted to collect electric signals such as a power supply line, an emergency brake control line, a brake release state line and a parking brake state line of a subway train, the pressure of a train pipe, a main air pipe, a brake cylinder pipe of a returning train and a control air circuit of a piston valve are respectively collected through the pressure sensor 10, the first pressure switch 7, the second pressure switch 8 and the third pressure switch 9, judgment is carried out according to the states of various signals, when the power supply abnormality, the air supply pressure abnormality and the brake state abnormality of the subway train are found, an audible and visual alarm signal is sent out to prompt a worker of the returning train, and meanwhile, when the unexpected emergency brake occurs in the returning of the subway train, the emergency brake control line is used for exhausting air through the emergency brake control line, the pneumatic valve is controlled to exhaust the train pipe, so that the locomotive. The specific control process is as follows:

during the process that the subway train is returned, the braking system of the subway train needs to be powered normally, if the braking system cannot work normally due to abnormal power supply, the power supply line of the braking system of the subway train needs to be electrically connected to the monitoring device 1, and when the monitoring device 1 detects that the power supply voltage of the braking system of the subway train is lower than a set value (for example, when the rated voltage is DC110V, the set value can be set to be DC96V), the monitoring device 1 outputs an alarm signal to the first alarm 2, and sound and light alarm is activated.

In the process that the subway train is returned, the braking system of the subway train needs to continuously supply air through the main air pipe when working normally, if the air supply pressure is low, the braking system cannot work normally, therefore, the monitoring device 1 monitors the pressure of the main air pipe penetrating through the returning vehicle and the subway train in real time through the first pressure switch 7, and when the monitoring device 1 detects that the pressure of the main air pipe is lower than a set value (generally set to 600kPa), the monitoring device 1 outputs an alarm signal to the second alarm 3 to activate audible and visual alarm.

In order to ensure the loopback safety, the parking brake of the subway train in the loopback process is continuously kept released, the monitoring device 1 monitors the parking brake state of the brake system of the subway train in real time, and when the abnormal application of the parking brake of the subway train is found, the monitoring device 1 outputs an alarm signal to the third alarm 4 to activate the audible and visual alarm.

During the process of returning the subway train, the braking system of the subway train should keep the same state as the braking system of the locomotive and the returning train, namely synchronously applying and relieving the braking. The monitoring device 1 monitors the braking state of the subway train in real time, meanwhile monitors the pressure of a brake cylinder pipe of the returning train in real time through the pressure sensor 10, monitors the pressure of the brake cylinder pipe of the returning train in real time through the second pressure switch 8, and judges that the locomotive and the returning train are in a brake applying or relieving state at present through detecting the pressure value of the brake cylinder pipe of the returning train and the pressure state of the brake cylinder pipe by the monitoring device 1. If the pressure of the train pipe is lower than the constant pressure (500 or 600kPa) and higher than 40kPa, and the pressure of the brake cylinder pipe of the returning vehicle is higher than 50kPa, the locomotive and the returning vehicle are judged to be in a braking state; if the pressure of the train pipe is close to the constant pressure (generally within 20 kPa) and the pressure of the brake cylinder of the returning vehicle is lower than 20 or 30kPa, the locomotive and the returning vehicle are judged to be in a releasing state. The monitoring device 1 compares the judged braking states of the locomotive and the returning train with the braking state of the subway train, delays for a certain time (generally set to 3 to 5 seconds), and outputs an alarm signal to the fourth alarm 5 if the braking states are not consistent, so that audible and visual alarm is activated.

In the process that the subway train is returned, if the emergency brake control line of the subway train loses power, the brake system of the subway train connected with the monitoring device 1 applies emergency brake, the monitoring device 1 monitors the state of the emergency brake control line in real time, if the emergency brake control line loses power, an alarm signal is output to the fifth alarm 6, and sound and light alarm is activated. Meanwhile, the power failure of the emergency brake control line causes the electromagnetic valve 11 to be powered off and discharges the pipeline connected with the pneumatic piston valve 12 to the atmosphere, and the pneumatic piston valve 12 communicates the train pipe with the atmosphere, so that the pressure of the train pipe is rapidly reduced, and the locomotive connected with the train pipe and a brake system of the return train synchronously apply emergency brake.

The live contact shutoff plug 13 is used to manually isolate the pneumatic piston valve 12. The monitoring device 1 can monitor the operation state of the charged contact cutoff cock 13 and the state of the pre-control pressure of the pneumatic piston valve through the third pressure switch 9 through electrical connection, when the monitoring device 1 detects that the charged contact cutoff cock 13 is in an open state and the pre-control pressure of the pneumatic piston valve 12 is in a low-pressure state, the pneumatic piston valve 12 is judged to be in an open state, a train pipe is in a rapid discharge state, the monitoring device 1 outputs an alarm signal to the fifth alarm 6, and audible and visual alarm is activated.

Unpowered loopback state monitored control system of railcar, realize in the loopback car that the railcar power supply is unusual, the unexpected power loss of emergency braking control line, the trouble is not alleviated in the braking, the trouble is not applyed in the braking, total wind pressure is unusual, the parking braking is not alleviated the trouble such as monitoring and acousto-optic warning, if emergency braking is applyed to the railcar accident, will discharge train pipe pressure through control train pipe blow-off valve, make the locomotive and loopback car synchronous application emergency braking, loopback the not enough problem of coupling intensity when solving many marshalling the railcar and loopback.

Claims

1. A subway vehicle unpowered loopback state monitoring system is characterized in that: the device comprises a monitoring device (1) arranged in a return vehicle, five alarms, three pressure switches, a pressure sensor (10), an electromagnetic valve (11), a pneumatic piston valve (12) and an electrified contact cut-off cock (13);

the monitoring device (1) is electrically connected with a power supply line, an emergency braking control line, a braking release state line and a parking braking state line of a brake system of the returned subway train; the five alarms are electrically connected with the monitoring device (1); the electromagnetic valve (11) is connected with an electrified contact cut-off cock (13) through a gas circuit and is also electrically connected with an emergency braking control line of a subway train;

the pressure sensor (10) is connected with a train pipe gas circuit of the returning vehicle and is electrically connected with the monitoring device (1) at the same time; the first pressure switch (7) is connected with a gas circuit of a main air pipe which runs through the return vehicle and the subway vehicle and is electrically connected with the monitoring device (1); the second pressure switch (8) is connected with the air path of the brake cylinder pipe of the return vehicle and is electrically connected with the monitoring device (1); the third pressure switch (9) is connected with the electromagnetic valve (11) and the electrified contact cut-off cock (13) and is also electrically connected with the monitoring device (1), and the electrified contact cut-off cock (13) is connected with the pneumatic piston valve (12) through an air circuit;