CN117341659A - Railway wagon braking band-type brake monitoring method and device and electronic equipment - Google Patents

Abstract

The embodiment of the invention provides a method, a device and electronic equipment for monitoring a railway freight car braking band-type brake. If so, determining the normal wheel set rotating speed of the target railway wagon based on the wheel set rotating speeds of other adjacent railway wagons except the target railway wagon. If the rotating speed of any wheel set of the target railway wagon is lower than the rotating speed of the normal wheel set, judging that the target railway wagon has a brake fault, executing a preset brake fault processing program, and performing anti-brake protection. According to the embodiment of the invention, the wheel set rotating speed detection module and the brake cylinder pressure sensor are arranged, so that the wheel set rotating speed and the brake cylinder pressure of the target railway wagon are obtained in real time, the brake band-type brake fault is detected in real time based on the wheel set rotating speed and the brake cylinder pressure, the brake band-type brake fault is found out in time, and the railway wagon brake band-type brake fault real-time monitoring and the brake band-type brake protection prevention are realized.

Description

Railway wagon braking band-type brake monitoring method and device and electronic equipment

Technical Field

The invention relates to the technical field of railway freight train braking, in particular to a railway freight train braking band-type brake monitoring method and device and electronic equipment.

Background

Air brake devices used for braking freight trains at present. I.e. the air pushes the brake lever to brake. When the freight train runs, various factors can lead to the braking band-type brake of the freight train. The brake band-type brake can lead to brake shoe abrasion, even lead to secondary faults such as rail and wheel scratch, parking on the way of freight trains, and the like, and further influence normal railway running.

The method for finding out the brake comprises the steps of judging by means of observation experience of drivers and judging by experience of ground personnel when a train passes through, and stopping the brake after the brake occurs. The existing mode can not discover faults in time and process braking faults in time, so that the braking band-type brake fault processing efficiency is low.

Disclosure of Invention

The embodiment of the invention provides a method and a device for monitoring a railway wagon brake and electronic equipment, so as to realize real-time monitoring of faults of the railway wagon brake.

In a first aspect, an embodiment of the invention provides a method for monitoring a brake of a railway freight car, wherein a plurality of sections of railway freight cars and locomotives form a railway freight train, and each section of railway freight car is provided with a wheel set rotating speed detection module and a brake cylinder pressure sensor; the method comprises the following steps:

During the running process of the railway freight train, the wheel set rotating speed detection module and the brake cylinder pressure sensor are used for monitoring the rotating speed of each wheel set and the brake cylinder pressure of each railway freight train in real time;

determining whether a target railway wagon is in a braking state based on the brake cylinder pressure; the target railway freight car is any one of railway freight cars of the railway freight car train;

if the target railway wagon is in a braking state, determining the normal wheel set rotating speed of the target railway wagon based on the wheel set rotating speeds of other adjacent railway wagons except the target railway wagon;

if the rotating speed of any wheel set of the target railway wagon is lower than the rotating speed of the normal wheel set, judging that the target railway wagon has a braking band-type brake fault, executing a preset braking band-type brake fault processing program, and performing braking band-type brake protection.

In one possible implementation, a tension sensor is also provided on the brake upper tie rod of the target railway wagon. Correspondingly, before the determining whether the target railway wagon is in the braking state based on the brake cylinder pressure, the method further comprises: and acquiring real-time braking tension of the target railway wagon through the tension sensor of the target railway wagon. Correspondingly, the determining whether the target railway wagon is in a braking state based on the brake cylinder pressure comprises: and if the brake cylinder pressure is larger than a preset value, acquiring the preset tension corresponding to the brake cylinder pressure based on the corresponding relation between the brake cylinder pressure and the brake tension. And if the difference value between the preset tension and the braking tension is within the tolerance range, judging that the target railway wagon is in a braking state.

In one possible implementation manner, before the wheel set rotation speed detection module and the brake cylinder pressure sensor monitor the rotation speed and the brake cylinder pressure of each wheel set of each railway freight car in real time during the running of the railway freight train, the method further comprises: the average speed of the rail freight train is obtained based on the average wheelset rotational speed of other adjacent part rail freight cars other than the target rail freight car. And if the average speed of the railway freight train is greater than a preset value, determining that the railway freight train is in the running process.

In one possible implementation, the rail cargo train is further provided with a satellite positioning module. Correspondingly, before the wheel set rotating speed detection module and the brake cylinder pressure sensor are used for monitoring the rotating speed and the brake cylinder pressure of each wheel set of each railway freight car in real time in the running process of the railway freight train, the method further comprises the following steps: and acquiring the speed of the railway freight train through the satellite positioning module. And if the speed of the railway freight train is greater than a preset value, determining that the railway freight train is in the running process.

In one possible implementation, the wheel set rotation speed detection module includes a magnetic field sensing unit, and N permanent magnets disposed at equal intervals around an axle of the wheel set. When the axle drives the permanent magnet to rotate, the magnetic field induction unit induces the magnetic field change and generates potential pulses when the permanent magnet rotates. Correspondingly, through the wheel set rotating speed detection module, the real-time monitoring of the wheel set rotating speed of each section of railway freight car comprises the following steps: and aiming at any section of railway wagon, acquiring the number of potential pulses generated by the magnetic field induction unit within a preset time period. And obtaining the rotating speed of the railway wagon wheel pair based on the preset time length, the potential pulse number and the number N of the permanent magnets.

In one possible implementation, a brake release valve is also provided on the brake cylinder of the rail cargo train. Correspondingly, executing the preset brake fault processing program to protect the brake comprises the following steps: and outputting a control instruction, wherein the control instruction is used for controlling the opening of a brake release valve and the discharge of pressure air of a brake cylinder so as to realize brake release and anti-brake band-type brake protection.

In one possible implementation, a brake cut-off plug door is further arranged between the brake cylinder of the railway freight train and the main air pipe. Correspondingly, executing the preset brake fault processing program to protect the brake comprises the following steps: and outputting a control instruction, wherein the control instruction is used for controlling to close a brake cutoff plug door so as to close a brake pressure source of the target railway wagon and conduct anti-brake band-type brake protection.

In a second aspect, an embodiment of the invention provides a railway freight car braking band-type brake monitoring device, wherein a plurality of railway freight cars and locomotives form a railway freight train, and each railway freight car is provided with a wheel set rotating speed detection module and a brake cylinder pressure sensor; the device comprises:

the real-time monitoring module is used for monitoring the rotating speed of each wheel set and the pressure of the brake cylinder of each railway freight car in real time through the wheel set rotating speed detection module and the pressure sensor of the brake cylinder in the running process of the railway freight train;

The braking state determining module is used for determining whether the target railway wagon is in a braking state or not; the target railway freight car is any one of railway freight cars of the railway freight car train;

the rotating speed determining module is used for determining the normal wheel set rotating speed of the target railway wagon based on the wheel set rotating speeds of other adjacent railway wagons except the target railway wagon if the target railway wagon is in a braking state;

and the execution module is used for judging that the target railway wagon has a brake band-type brake fault if the rotating speed of any wheel set of the target railway wagon is lower than the rotating speed of the normal wheel set, executing a preset brake band-type brake fault processing program and carrying out brake protection.

In a third aspect, an embodiment of the present invention provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to the first aspect or any one of the possible implementations of the first aspect, when the computer program is executed by the processor.

In a fourth aspect, embodiments of the present invention provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method as described above in the first aspect or any one of the possible implementations of the first aspect.

The embodiment of the invention provides a method, a device and electronic equipment for monitoring a railway wagon braking band-type brake, wherein a plurality of railway wagons and locomotives form a railway goods train, and each railway wagon is provided with a wheel set rotating speed detection module and a brake cylinder pressure sensor; the method comprises the following steps: during the running process of the railway freight train, the wheel set rotating speed detection module and the brake cylinder pressure sensor are used for monitoring the rotating speed of each wheel set and the brake cylinder pressure of each railway freight train in real time; determining whether the target railway wagon is in a braking state based on the brake cylinder pressure; the target railway freight car is any one of various railway freight cars of the railway freight car train; if the target railway wagon is in a braking state, determining the normal wheel set rotating speed of the target railway wagon based on the wheel set rotating speeds of other adjacent railway wagons except the target railway wagon; if the rotating speed of any wheel set of the target railway wagon is lower than the rotating speed of the normal wheel set, judging that the target railway wagon has a brake fault, executing a preset brake fault processing program, and performing anti-brake protection. According to the embodiment of the invention, the wheel set rotating speed detection module and the brake cylinder pressure sensor are arranged, so that the wheel set rotating speed and the brake cylinder pressure of the target railway wagon are obtained in real time, the brake band-type brake fault is detected in real time based on the wheel set rotating speed and the brake cylinder pressure, the brake band-type brake fault is found in time, and the railway wagon brake band-type brake fault is monitored in real time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an application scenario diagram of a railway wagon braking band-type brake monitoring method provided by an embodiment of the invention;

FIG. 2 is a schematic top view of a railway truck steer carriage according to an embodiment of the present invention;

FIG. 3 is a flow chart of an implementation of a method for monitoring a railway wagon braking band brake provided by an embodiment of the invention;

fig. 4 is a schematic diagram of a wheel set rotation speed detection module arrangement position according to an embodiment of the present invention;

FIG. 5 is a schematic view of a brake cylinder pressure sensor arrangement position provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of a configuration of a set position of a tension sensor according to an embodiment of the present invention;

fig. 7 is a schematic view of a brake cutoff plug door setting position according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a monitoring device for a railway wagon braking band-type brake according to an embodiment of the invention;

Fig. 9 is a schematic diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.

Fig. 1 is an application scenario diagram of a railway wagon braking band-type brake monitoring method provided by the embodiment of the invention. Referring to fig. 1, a schematic side structural view of a railway wagon is shown. Railway freight trains are typically composed of several tens to hundreds of railway freight cars.

Railway wagons generally comprise an upper wagon and a bottom bogie, wherein the upper wagon may also be of a flat construction, the railway wagon superstructure being not limited thereto. A section of railway freight car generally comprises front and rear sets of bogies. Fig. 2 shows one of the two bogies of a section of railway wagon. Fig. 2 is a schematic top view structure of a railway wagon bogie according to an embodiment of the present invention. Referring to fig. 2, each set of trucks includes two wheel pairs, one wheel pair including two wheels and an axle connecting the wheels. The bogie also includes cross bars, bolsters, etc. to connect the two wheel sets, which will not be described in detail herein.

Railway freight cars also include a brake system, typically a pneumatic brake system. Illustratively, the pneumatic brake system includes a main air duct connected to each rail wagon, the main air duct providing a source of braking power and controlling rail wagon braking, relief through changes in air pressure thereof. Further, the railway wagon also comprises a control valve and a foundation braking device (comprising a brake cylinder, a brake pull rod, a lever, a brake adjuster, a brake beam, a brake shoe and the like). The braking process comprises the following steps: the control valve of the main air pipe is connected with the basic braking device, and the wheels are decelerated through friction to realize braking.

When the braking system is in fault, the braking band-type brake may be in fault, that is, the wheels and the steel rails slide due to overlarge braking force, so that the wheels and the steel rails are scratched. When the brake is seriously broken, a large amount of sparks can be visually observed at the wheels.

The method for finding out the brake comprises the steps of judging by means of observation experience of drivers and judging by experience of ground personnel when a train passes through, and stopping the brake after the brake occurs. The existing mode can not discover faults in time and process braking faults in time, so that the braking band-type brake fault processing efficiency is low.

According to the embodiment of the invention, the wheel set rotating speed detection module and the brake cylinder pressure sensor are arranged, so that the brake band-type brake fault is detected in real time based on the wheel set rotating speed and the brake cylinder pressure, and the brake band-type brake fault is found out in time, so that the real-time monitoring of the railway wagon brake band-type brake fault is realized.

Fig. 3 is a flowchart of an implementation of a method for monitoring a railway wagon braking band-type brake according to an embodiment of the invention. Referring to fig. 3, an embodiment of the invention provides a rail wagon braking band-type brake monitoring method, a rail wagon train comprises a plurality of rail wagons, and each rail wagon is provided with a wheel set rotating speed detection module and a brake cylinder pressure sensor.

The wheel set rotating speed detection module can detect the rotating speed of the railway wagon wheel set in real time. For example, the wheel set rotational speed detection module may be provided on any wheel set of the railway wagon. For example, each wheel set is provided with a wheel set rotation speed detection module. In addition, the railway wagon is also provided with a power generation device which is used for supplying power to the wheel set rotating speed detection module and the like.

Further exemplary, at least one wheel set rotation speed detection module is provided on each wheel set of the railway wagon. Regarding the setting position of the wheel set rotation speed detection module, fig. 4 is a schematic diagram of the setting position of the wheel set rotation speed detection module according to the embodiment of the present invention, and refer to fig. 4: the wheel set rotating speed detection module comprises a magnetic field induction unit and a permanent magnet. The magnetic field induction unit is fixed on a center sill of the railway wagon through a bracket, and the permanent magnet is fixed on an axle of the wheel set. The magnetic field induction unit corresponds to the position of the permanent magnet. The axle rotates to drive the permanent magnet to rotate, so that the induction magnetic field of the magnetic field induction unit is changed, and the rotating speed of the axle, namely the rotating speed of the wheel set, is measured.

The brake cylinder pressure sensor can detect the air pressure of the inner cavity of the brake cylinder in real time, namely the pressure of the brake cylinder. Fig. 5 is a schematic diagram of a brake cylinder pressure sensor arrangement position structure according to an embodiment of the present invention. Referring to fig. 5, an exemplary brake cylinder pressure sensor may be secured to the brake cylinder via a threaded bore.

Further exemplary, the railway wagon is further provided with a vehicle-mounted intelligent computing terminal. The vehicle-mounted intelligent computing terminal is connected with each wheel set rotating speed detection module and the brake cylinder pressure sensor. The vehicle-mounted intelligent computing terminal acquires data through a rotating speed detection module and a brake cylinder pressure sensor and is used as an execution main body of the railway wagon brake monitoring method for monitoring the brake.

The implementation process of the rail wagon braking band-type brake monitoring method is described in detail below. The method comprises the following steps:

in step 201, during the running process of the railway freight train, the wheel set rotating speed and the brake cylinder pressure of each railway freight car are monitored in real time through the wheel set rotating speed detection module and the brake cylinder pressure sensor.

In some embodiments, the rail cargo train is traveling, indicating that the displacement velocity of the rail wagon is greater than zero.

In some embodiments, the wheelset speed of each rail wagon is monitored in real time by a wheelset speed detection module.

In some embodiments, the brake cylinder pressure of each rail wagon is monitored in real time by a brake cylinder pressure sensor.

In step 202, it is determined whether the target railway wagon is in a braked state based on the brake cylinder pressure. The target railway wagon is any one of railway wagons of the railway freight train.

In some embodiments, determining whether the target rail wagon is in a braked state based on the brake cylinder pressure comprises: and if the brake cylinder pressure is larger than the preset value, judging that the target railway wagon is in a braking state.

In the braking state, the braking force output by the brake cylinder drives the brake upper pull rod, and the brake upper pull rod pulls the brake shoe to be in contact with the wheel.

The purpose of step 202 is to: and judging whether the brake cylinder is in a braking state or not when the railway freight train is in a running process. If the brake is in a braking state, whether the brake is in fault or not is further judged.

In step 203, if the target railway wagon is in a braking state, determining a normal wheel set rotating speed of the target railway wagon based on the wheel set rotating speeds of other adjacent railway wagons except the target railway wagon;

In some embodiments, the wheel set rotational speed of the adjacent portion of the rail wagon other than the target rail wagon may be monitored in real time by the wheel set rotational speed detection module in step 201.

In some embodiments, the average wheelset speed of the adjacent portion of the rail wagon other than the target rail wagon may be taken as the normal wheelset speed of the target rail wagon.

Illustratively, the adjacent rail wagon of the target rail wagon is an adjacent rail wagon in the train rail wagon consist. In order to improve the calculation efficiency, the average wheel set rotating speed does not need to be obtained based on all railway wagons except the target railway wagon, and only the adjacent railway wagons need to be based. For example, the determination is made based on the average wheel set rotational speeds of the other adjacent 5 railway wagons other than the target railway wagon.

For example, adjacent rail wagons of the target rail wagon may obtain train consist information via the on-board information system, and determine respective adjacent vehicles based on the train consist information.

The purpose of determining the wheel set rotation speed of the target railway wagon is to further determine whether a brake band-type brake failure occurs. When the braking band-type brake fault occurs, the rotating speed of the wheel set is reduced. Therefore, it can be determined whether the wheel set rotation speed is reduced and the brake band-type brake is failed when the brake cylinder pressure is excessive in step 202.

Furthermore, the diameters of the two wheels of the same wheel set are different, but the difference is required, and the wheels and the steel rails cannot be scratched due to very slight sliding. There is a gap between the diameters of the wheels of the two wheel pairs of each bogie and the two bogies of each vehicle. Therefore, the above-mentioned average wheel set rotational speed is not accurate as the normal wheel set rotational speed of the target railway wagon directly.

In some embodiments, determining the normal wheelset speed of the target railway wagon based on wheelset speeds of other adjacent portion railway wagons other than the target railway wagon comprises:

and step one, determining the running speed of the railway freight train based on the wheel set rotating speeds of other adjacent railway freight trains except the target railway freight train, and taking the running speed of the railway freight train as the running speed of the target railway freight train.

Illustratively, determining the speed of travel of the rail cargo train based on the wheel set rotational speeds of adjacent portions of the rail trucks other than the target rail truck includes: obtaining the running speed of each adjacent railway wagon based on the wheel set rotating speed and the circumference of each adjacent railway wagon; and determining the running speed of the railway freight train according to the running speeds of the adjacent railway freight cars.

And step two, calculating to obtain the normal wheel set rotating speed according to the running speed of the target railway wagon and the wheel set diameter of the target railway wagon.

Illustratively, the target rail wagon's travel speed is divided by the target rail wagon's wheel circumference, where the wheel circumference is the wheel diameter multiplied by pi, to yield the normal wheel set rotational speed.

For example, the unit of wheel set rotational speed may be revolutions per minute.

In some embodiments, after step 203, it is further included to determine whether each wheel set rotational speed of the target rail wagon is lower than a normal wheel set rotational speed.

In some embodiments, the wheel set rotational speed of the target rail wagon is the wheel set rotational speed of the target rail wagon monitored in real time by the wheel set rotational speed detection module in step 201.

Further, there are many reasons for detecting the decrease in the wheel set rotation speed, for example, failure of the wheel set rotation speed detection module. If it is not first determined in step 202 whether the brake cylinder pressure is abnormal or not, and if the wheel set rotational speed is simply determined in step 203, the cause of the wheel set rotational speed decrease cannot be determined, and accordingly, the failure cannot be handled in time.

In step 204, if the rotation speed of any wheel set of the target railway wagon is lower than the normal rotation speed of the wheel set, the target railway wagon is judged to have a braking band-type brake fault, a preset braking band-type brake fault processing program is executed, and braking band-type brake protection is performed.

When the pressure of the brake cylinder is overlarge and the wheel set rotating speed of the target railway wagon is lower than the normal wheel set rotating speed, two anomalies with strong correlation appear simultaneously, so that the fault of the brake band-type brake of the target railway wagon can be judged.

Furthermore, on the basis of judging that the target railway wagon has a brake fault, a corresponding fault processing program is further executed to perform brake protection. Therefore, the fault can be discovered and processed correspondingly in the first time in the running process of the railway wagon, and the damage such as wheel rail scratch caused by the fact that the brake band-type brake fault cannot be discovered in time is eliminated.

According to the embodiment of the invention, the wheel set rotating speed detection module and the brake cylinder pressure sensor are arranged, so that the wheel set rotating speed and the brake cylinder pressure of the target railway wagon are obtained in real time, the brake band-type brake fault is detected in real time based on the wheel set rotating speed and the brake cylinder pressure, the brake band-type brake fault is found in time, and the railway wagon brake band-type brake fault is monitored in real time. According to the embodiment of the invention, the faults of the brake are monitored in real time, and the faults of the brake are found in time, so that the brake fault processing control is conveniently carried out in time, and the damage of the faults of the brake to the wheel track is eliminated.

A specific description of one embodiment is given below as to how the speed of rotation of the railway wagon wheel set is monitored. Referring to fig. 4, in one possible implementation, the wheel set rotational speed detection module includes a magnetic field sensing unit, N permanent magnets disposed at equal intervals around an axle of the wheel set. When the axle drives the permanent magnet to rotate, the magnetic field induction unit induces the magnetic field change and generates potential pulses when the permanent magnet rotates. Correspondingly, through wheel set rotational speed detection module, the wheel set rotational speed of real-time supervision every section railway freight car includes: and aiming at any section of railway freight car, acquiring the number of potential pulses generated by the magnetic field induction unit within a preset time period. The railway wagon wheel set rotating speed is obtained based on the preset duration, the potential pulse number and the number N of the permanent magnets.

The number of permanent magnets is, for example, 6, the 6 permanent magnets being equally spaced around the axle of the wheel set.

The number of permanent magnets determines, for example, the number of potential pulses generated per revolution of the wheel set.

In some embodiments, obtaining the railway wagon wheel set rotational speed based on the preset time period, the number of potential pulses, the number of permanent magnets N comprises: dividing the potential pulse number by N and then dividing by the preset time length to obtain the rotating speed of the railway wagon wheel pair.

In one possible implementation manner, before the wheel set rotation speed detection module and the brake cylinder pressure sensor monitor the wheel set rotation speed and the brake cylinder pressure of each section of railway freight car in real time during the running of the railway freight train, the method further comprises: and obtaining the average speed of the railway freight train based on the average wheel set rotating speeds of other adjacent railway freight cars except the target railway freight car. And if the average speed of the railway freight train is greater than the preset value, determining that the railway freight train is in the running process.

In one possible implementation, the rail cargo train is further provided with a satellite positioning module. Correspondingly, in the running process of the railway freight train, before the wheel set rotating speed detection module and the brake cylinder pressure sensor monitor the rotating speed and the brake cylinder pressure of each wheel set of each railway freight train in real time, the method further comprises the following steps: and acquiring the speed of the railway freight train through a satellite positioning module. And if the speed of the railway freight train is greater than the preset value, determining that the railway freight train is in the running process.

The satellite positioning module obtains the speed of the railway freight train, which is a condition for judging the movement of the train, and the vehicle will apply braking even when stationary, and the wheel set rotation speed is zero, but the brake cannot be judged.

Fig. 6 is a schematic diagram of a configuration of a placement position of a tension sensor according to an embodiment of the present invention. Referring to fig. 6, in one possible implementation, a tension sensor is also provided on the brake upper drawbar of the target railway wagon.

The tension sensor is illustratively fixed to a brake upper lever which is connected to the brake shoe by other brake levers and brake beams. Further, the tension sensor can monitor the braking tension of the upper braking pull rod in real time.

Accordingly, before determining whether the target railway wagon is in the braking state based on the brake cylinder pressure, further includes: and acquiring the real-time braking tension of the upper braking pull rod of the target railway wagon through the tension sensor of the target railway wagon.

Accordingly, determining whether the target railway wagon is in a braked state based on the brake cylinder pressure includes: and if the brake cylinder pressure is greater than the preset value, acquiring the preset tension corresponding to the brake cylinder pressure based on the corresponding relation between the brake cylinder pressure and the brake tension. And if the difference value between the preset tension and the braking tension is within the tolerance range, judging that the target wagon is in a braking state.

When the pressure of the brake cylinder is too high and the rotating speed of the wheel set is too low, the brake pulling force can be further determined by judging the brake pulling force, so that the brake pulling force is too high due to the fact that the pressure of the brake cylinder is too high, the rotating speed of the wheel set is too low, and brake band-type brake faults are generated. So that erroneous judgment due to other reasons can be eliminated. For example, the situation that the brake cylinder is excessively pressurized and the brake upper pull rod is broken and the wheel set rotating shaft is blocked can be eliminated.

According to the embodiment of the invention, the brake band-type brake fault is judged based on the brake cylinder pressure, the brake pulling force of the brake upper pull rod and the wheel set rotating speed, so that the accuracy of judging the brake band-type brake fault is further improved.

It should be further noted that, when the brake cylinder pressure is excessive and the brake pull force is normal, the brake cylinder pressure is not transmitted to the brake upper tie rod. If the rotation speed is normal at this time, it can be judged that the mechanical structure breaks down. If the rotating speed is too low at this time, the rotating speed is too low for other reasons possibly to cause faults, and an alarm can be output to remind an operator to carry out corresponding treatment.

It should be further noted that, when the brake cylinder pressure is normal and the brake tension is too great, it can be determined that the brake shoe cannot leave the wheel tread due to the mechanical structure clamping stagnation. And if the rotating speed is abnormal, outputting a brake fault warning. A specific description of one embodiment is given below.

In one possible implementation manner, when the railway wagon detects that the rotation speed of the target railway wagon wheel pair is lower than the average rotation speed in the running process, the braking wind pressure of the braking cylinder is smaller than a preset value, and the basic braking structure is blocked to form a braking band-type brake.

Further, the brake band-type brake fault of the basic brake structure clamping stagnation is detected, and a warning signal can be output to remind a locomotive driver and passengers to stop according to regulations.

The following illustrates how to execute the preset brake fault handling procedure to perform anti-brake protection.

In one possible implementation, a brake release valve is also provided on the brake cylinder of the railway wagon. Referring to fig. 4, an exemplary brake release valve may be provided on a plug hole of a brake cylinder. The brake release valve may communicate between the interior and the exterior of the brake cylinder to reduce the pressure of the brake cylinder.

Correspondingly, executing a preset brake fault processing program, and performing anti-brake band-type brake protection comprises: and outputting a control instruction, wherein the control instruction is used for controlling the opening of a brake release valve and the discharge of pressure air of a brake cylinder so as to realize brake release and brake-preventing band-type brake protection.

Here, if the brake band-type brake is caused by a failure of the brake cylinder (for example, the internal pressure of the brake cylinder cannot be reduced normally), the brake band-type brake failure can be solved by opening the brake release valve and reducing the pressure of the brake cylinder. Further, if the brake shoe cannot rebound due to mechanical clamping stagnation of the braking structure to cause braking band-type brake, the pressure of the braking cylinder is reduced, the braking band-type brake fault can be relieved, and the braking band-type brake fault cannot be aggravated at least due to subsequent braking operation.

According to the embodiment of the invention, the brake release valve is arranged, so that when the brake band-type brake fault is judged, the brake release valve can be controlled to be opened in real time, the pressure of the brake cylinder is reduced, and the brake release is carried out after the brake band-type brake fault is found, so that the damage to the railway wagon in the subsequent driving process is avoided, the brake band-type brake fault processing efficiency is improved, and the brake protection is realized.

Fig. 7 is a schematic view of a brake cutoff plug according to an embodiment of the present invention.

In one possible embodiment, a brake shut-off valve is also provided between the control valve of the rail wagon and the main air line. Correspondingly, executing a preset brake fault processing program, and performing anti-brake band-type brake protection comprises: and outputting a control instruction, wherein the control instruction is used for controlling to close the brake cutoff plug door so as to close a brake pressure source of the target railway wagon and conduct anti-brake band-type brake protection.

The main air pipe is connected with a brake cutoff plug door, the brake cutoff plug door is connected with a combined dust collector, the combined dust collector is connected with a control valve, and the control valve is connected with a brake cylinder.

According to the embodiment of the invention, the brake pressure source of the target railway wagon is cut off after the brake band-type brake of the target railway wagon is found out to be faulty by arranging the brake cut-off plug door, and the brake function of the target railway wagon is closed, so that the possibility of re-occurrence of the brake band-type brake is eliminated.

It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.

The following are device embodiments of the invention, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.

Fig. 8 is a schematic structural diagram of a monitoring device for a railway wagon braking band-type brake according to an embodiment of the invention. For convenience of explanation, only the portions related to the embodiments of the present invention are shown, and the details are as follows:

referring to fig. 8, a plurality of railway wagons and locomotives form a railway freight train, each railway wagon being provided with a wheel set rotational speed detection module and a brake cylinder pressure sensor. The above-mentioned device 8 comprises:

the real-time monitoring module 81 is used for monitoring the wheel set rotating speed and the brake cylinder pressure of each section of railway freight car in real time through the wheel set rotating speed detection module and the brake cylinder pressure sensor in the running process of the railway freight train.

The brake status determination module 82 is configured to determine whether the target railway wagon is in a braked state based on the brake cylinder pressure. The target rail wagon is any one of the rail wagons of the rail freight train.

The rotation speed determining module 83 is configured to determine a normal wheel set rotation speed of the target railway wagon based on the wheel set rotation speeds of other adjacent railway wagons except the target railway wagon if the target railway wagon is in a braking state.

And the execution module 84 is used for judging that the target railway wagon has a braking band-type brake fault if the wheel set rotating speed of the target railway wagon is lower than the normal wheel set rotating speed, executing a preset braking band-type brake fault processing program and carrying out braking band-type brake protection.

According to the embodiment of the invention, the wheel set rotating speed detection module and the brake cylinder pressure sensor are arranged, so that the wheel set rotating speed and the brake cylinder pressure of the target railway wagon are obtained in real time, the brake band-type brake fault is detected in real time based on the wheel set rotating speed and the brake cylinder pressure, the brake band-type brake fault is found in time, and the railway wagon brake band-type brake fault is monitored in real time.

In one possible implementation, a tension sensor is also provided on the brake upper tie rod of the target railway wagon. Accordingly, before determining whether the target railway wagon is in the braking state based on the brake cylinder pressure, further includes: and acquiring the real-time braking tension of the target railway wagon through a tension sensor of the target railway wagon. Accordingly, determining whether the target railway wagon is in a braked state based on the brake cylinder pressure includes: and if the brake cylinder pressure is greater than the preset value, acquiring the preset tension corresponding to the brake cylinder pressure based on the corresponding relation between the brake cylinder pressure and the brake tension. And if the difference value between the preset tension and the braking tension is within the tolerance range, judging that the target wagon is in a braking state.

In one possible implementation manner, before the wheel set rotation speed detection module and the brake cylinder pressure sensor monitor the wheel set rotation speed and the brake cylinder pressure of each section of railway freight car in real time during the running of the railway freight train, the method further comprises: and obtaining the average speed of the railway freight train based on the average wheel set rotating speeds of other adjacent railway freight cars except the target railway freight car. And if the average speed of the railway freight train is greater than the preset value, determining that the railway freight train is in the running process.

In one possible implementation, the rail cargo train is further provided with a satellite positioning module. Correspondingly, in the running process of the railway freight train, before the wheel set rotating speed detection module and the brake cylinder pressure sensor monitor the rotating speed and the brake cylinder pressure of each wheel set of each railway freight train in real time, the method further comprises the following steps: and acquiring the speed of the railway freight train through a satellite positioning module. And if the speed of the railway freight train is greater than the preset value, determining that the railway freight train is in the running process.

In one possible implementation, the wheel set rotation speed detection module includes a magnetic field sensing unit, N permanent magnets disposed at equal intervals around an axle of the wheel set. When the axle drives the permanent magnet to rotate, the magnetic field induction unit induces the magnetic field change and generates potential pulses when the permanent magnet rotates. Correspondingly, through wheel set rotational speed detection module, the wheel set rotational speed of real-time supervision every section railway freight car includes: and aiming at any section of railway freight car, acquiring the number of potential pulses generated by the magnetic field induction unit within a preset time period. The railway wagon wheel set rotating speed is obtained based on the preset duration, the potential pulse number and the number N of the permanent magnets.

In one possible implementation, a brake release valve is also provided on the brake cylinder of the rail freight train. Correspondingly, executing a preset brake fault processing program, and performing anti-brake band-type brake protection comprises: and outputting a control instruction, wherein the control instruction is used for controlling the opening of a brake release valve and the discharge of pressure air of a brake cylinder so as to realize brake release and brake-preventing band-type brake protection.

In one possible implementation, a brake cut-off plug is also provided between the brake cylinder of the rail freight train and the main air line. Correspondingly, executing a preset brake fault processing program, and performing anti-brake band-type brake protection comprises: and outputting a control instruction, wherein the control instruction is used for controlling to close the brake cutoff plug door so as to close a brake pressure source of the target railway wagon and conduct anti-brake band-type brake protection.

Fig. 9 is a schematic diagram of an electronic device according to an embodiment of the present invention. As shown in fig. 9, the electronic apparatus 9 of this embodiment includes: a processor 90, a memory 91 and a computer program 92 stored in the memory 91 and executable on the processor 90. The processor 90 executes the computer program 92 to implement the steps of the above-described embodiments of the method for monitoring a braking band-type brake of a railway wagon, for example, steps 201 to 204 shown in fig. 3. Alternatively, the processor 90, when executing the computer program 92, performs the functions of the modules/units of the apparatus embodiments described above, such as the functions of the modules 81 to 84 shown in fig. 8.

Illustratively, the computer program 92 may be partitioned into one or more modules/units that are stored in the memory 91 and executed by the processor 90 to complete the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used to describe the execution of the computer program 92 in the electronic device 9. For example, the computer program 92 may be partitioned into modules 81 to 84 shown in fig. 8.

The electronic device 9 may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, etc. The electronic device 9 may include, but is not limited to, a processor 90, a memory 91. It will be appreciated by those skilled in the art that fig. 9 is merely an example of the electronic device 9 and is not meant to be limiting as the electronic device 9 may include more or fewer components than shown, or may combine certain components, or different components, e.g., the electronic device may further include an input-output device, a network access device, a bus, etc.

The processor 90 may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 91 may be an internal storage unit of the electronic device 9, such as a hard disk or a memory of the electronic device 9. The memory 91 may also be an external storage device of the electronic device 9, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the electronic device 9. Further, the memory 91 may also include both an internal storage unit and an external storage device of the electronic device 9. The memory 91 is used for storing the computer program and other programs and data required by the electronic device. The memory 91 may also be used for temporarily storing data that has been output or is to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other manners. For example, the apparatus/electronic device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the above-described embodiment of the method, or may be implemented by a computer program for instructing related hardware, where the computer program may be stored in a computer readable storage medium, and the computer program, when executed by a processor, may implement the steps of each of the above-described embodiments of the rail wagon brake monitoring method. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims (10)

1. A method for monitoring a railway freight car braking band-type brake is characterized in that a plurality of railway freight cars and locomotives form a railway freight train, and each railway freight car is provided with a wheel set rotating speed detection module and a brake cylinder pressure sensor; the method comprises the following steps:

during the running process of the railway freight train, the wheel set rotating speed detection module and the brake cylinder pressure sensor are used for monitoring the rotating speed of each wheel set and the brake cylinder pressure of each railway freight train in real time;

determining whether a target railway wagon is in a braking state based on the brake cylinder pressure; the target railway freight car is any one of railway freight cars of the railway freight car train;

If the target railway wagon is in a braking state, determining the normal wheel set rotating speed of the target railway wagon based on the wheel set rotating speeds of other adjacent railway wagons except the target railway wagon;

if the rotating speed of any wheel set of the target railway wagon is lower than the rotating speed of the normal wheel set, judging that the target railway wagon has a braking band-type brake fault, executing a preset braking band-type brake fault processing program, and performing braking band-type brake protection.

2. The railway wagon braking band-type brake monitoring method according to claim 1, wherein a tension sensor is further arranged on a braking upper pull rod of the target railway wagon; correspondingly, before the determining whether the target railway wagon is in the braking state based on the brake cylinder pressure, the method further comprises:

acquiring real-time braking tension of the target railway wagon through the tension sensor of the target railway wagon;

correspondingly, the determining whether the target railway wagon is in a braking state based on the brake cylinder pressure comprises:

if the brake cylinder pressure is larger than a preset value, acquiring a preset tensile force corresponding to the brake cylinder pressure based on a corresponding relation between the brake cylinder pressure and the brake tensile force;

And if the difference value between the preset tension and the braking tension is within the tolerance range, judging that the target railway wagon is in a braking state.

3. The method for monitoring the brake of the railway freight car according to claim 1, wherein before the wheel set rotating speed and the brake cylinder pressure of each railway freight car are monitored in real time through the wheel set rotating speed detection module and the brake cylinder pressure sensor during the running of the railway freight car, the method further comprises:

obtaining an average speed of the rail cargo train based on average wheelset speeds of other adjacent portion rail wagons other than the target rail wagon;

and if the average speed of the railway freight train is greater than a preset value, determining that the railway freight train is in the running process.

4. The method for monitoring a railway freight car brake according to claim 1, wherein the railway freight train is further provided with a satellite positioning module; correspondingly, before the wheel set rotating speed detection module and the brake cylinder pressure sensor are used for monitoring the rotating speed and the brake cylinder pressure of each wheel set of each railway freight car in real time in the running process of the railway freight train, the method further comprises the following steps:

Acquiring the speed of the railway freight train through the satellite positioning module;

and if the speed of the railway freight train is greater than a preset value, determining that the railway freight train is in the running process.

5. The method for monitoring the brake of the railway wagon according to claim 1, wherein the wheel set rotating speed detection module comprises a magnetic field induction unit and N permanent magnets which are arranged at equal intervals around an axle of a wheel set; when the axle drives the permanent magnet to rotate, the magnetic field induction unit induces the magnetic field change and generates potential pulses when the permanent magnet rotates;

correspondingly, through the wheel set rotating speed detection module, the real-time monitoring of the wheel set rotating speed of each section of railway freight car comprises the following steps:

aiming at any section of railway freight car, acquiring the number of potential pulses generated by the magnetic field induction unit within a preset time period;

and obtaining the rotating speed of the railway wagon wheel pair based on the preset time length, the potential pulse number and the number N of the permanent magnets.

6. The railway wagon braking band-type brake monitoring method according to claim 1, wherein a braking relief valve is further arranged on a braking cylinder of the railway wagon; correspondingly, executing the preset brake fault processing program to protect the brake comprises the following steps:

And outputting a control instruction, wherein the control instruction is used for controlling the opening of a brake release valve and the discharge of pressure air of a brake cylinder so as to realize brake release and anti-brake band-type brake protection.

7. The method for monitoring the brake of the railway freight car according to claim 1, wherein a brake cutoff plug door is further arranged between the control valve and the main air pipe of the railway freight car; correspondingly, executing the preset brake fault processing program to protect the brake comprises the following steps:

and outputting a control instruction, wherein the control instruction is used for controlling to close a brake cutoff plug door so as to close a brake pressure source of the target railway wagon and conduct anti-brake band-type brake protection.

8. The railway freight car braking band-type brake monitoring device is characterized in that a plurality of railway freight cars and locomotives form a railway freight train, and each railway freight car is provided with a wheel set rotating speed detection module and a brake cylinder pressure sensor; the device comprises:

the real-time monitoring module is used for monitoring the rotating speed of each wheel set and the pressure of the brake cylinder of each railway freight car in real time through the wheel set rotating speed detection module and the pressure sensor of the brake cylinder in the running process of the railway freight train;

the braking state determining module is used for determining whether the target railway wagon is in a braking state or not; the target railway freight car is any one of railway freight cars of the railway freight car train;

The rotating speed determining module is used for determining the normal wheel set rotating speed of the target railway wagon based on the wheel set rotating speeds of other adjacent railway wagons except the target railway wagon if the target railway wagon is in a braking state;

and the execution module is used for judging that the target railway wagon has a brake band-type brake fault if the rotating speed of any wheel set of the target railway wagon is lower than the rotating speed of the normal wheel set, executing a preset brake band-type brake fault processing program and carrying out brake protection.

9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of a railway wagon brake monitoring method as defined in any one of claims 1 to 7.

10. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of a railway wagon brake monitoring method as defined in any one of claims 1 to 7.