CN115179997A - Railway wagon driving safety monitoring method - Google Patents
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- CN115179997A CN115179997A CN202210769191.2A CN202210769191A CN115179997A CN 115179997 A CN115179997 A CN 115179997A CN 202210769191 A CN202210769191 A CN 202210769191A CN 115179997 A CN115179997 A CN 115179997A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
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Abstract
The invention provides a method for monitoring the running safety of a railway wagon, which belongs to the technical field of running monitoring and comprises the following steps: after the carriages are loaded with cargo, the overall center of gravity of each carriage along with the corresponding cargo is determined. And constructing a railway model and a carriage model loaded with cargos, and judging the vibration condition of the carriage model when the carriage model runs on the railway model at a specific speed according to the total weight and the gravity center of the carriage and the cargos so as to generate an early warning report. And judging the distance between the railway accident occurrence point and the truck, and calculating the arrival time of the truck. The method for monitoring the running safety of the railway wagon can accurately predict the vibration condition of the wagon by determining the gravity center of the carriage loaded with goods, and can give an early warning before the wagon runs, and the data reference is strong. And the calculated distance between the accident occurrence point and the truck further improves the driving safety of the truck.
Description
Technical Field
The invention belongs to the technical field of running monitoring, and particularly relates to a running safety monitoring method for a railway wagon.
Background
The railway freight transportation safety is the most important attention field in the rail transit field, and with the great improvement of the running speed and the carrying weight of freight trains and the wide operation of heavy haul railways in various regions, the running safety of the trains becomes the focus of attention of people.
At present, the running state monitoring of the traditional freight train mainly adopts monitoring modes such as overweight and overrun alarm, shaft temperature overhigh alarm and the like, the received information is generally transmitted to a monitoring room by a data module, and then the monitoring room sends out signals to realize early warning.
However, the method can only perform early warning when an accident occurs, which causes that the fault or the accident cannot be processed in time, the data referential performance is poor, and the safe operation of the railway cannot be effectively ensured.
Disclosure of Invention
The invention aims to provide a railway wagon driving safety monitoring method, and aims to solve the problems that timely processing cannot be performed, data referential performance is poor, and safe operation of a railway cannot be effectively guaranteed.
In order to achieve the purpose, the invention adopts the technical scheme that: the method for monitoring the running safety of the railway wagon comprises the following steps:
after loading cargos in the carriages, judging the center of gravity of each carriage together with the corresponding cargo assembly;
constructing a railway model and a carriage model loaded with the cargoes, and judging the vibration condition of the carriage model when the carriage model runs on the railway model at a specific speed according to the total weight of the carriage and the cargoes and the gravity center so as to generate an early warning report;
and judging the distance between the railway accident occurrence point and the truck, and calculating the arrival time of the truck.
In one possible implementation, the determining the position of the total center of gravity behind each of the cars together with the corresponding cargo comprises:
and setting a test section, and enabling the carriages to pass through the test section one by one so as to judge the gravity center.
In one possible implementation, the determining the center of gravity by passing the cars one by one through the test section includes:
determining the magnitude and direction of the acting force of the carriage on the test section; and reversely extending the directions of the acting forces at different positions to form an intersection point, wherein the intersection point is the gravity center.
In one possible implementation, the building a railway model and a car model comprises:
drawing a rough outer contour of the carriage to form the carriage model, and arranging the total weight average at the gravity center corresponding to the carriage model;
connecting the carriage models to form a truck model; and judging the vibration condition through the truck model and the railway model.
In a possible implementation manner, the determining the vibration condition through the truck model and the railway model includes:
placing the truck model on the railway model in the upper computer;
simulating the vibration situation of the truck model on the railway model under different speed conditions.
In one possible implementation, the simulating the vibration situation of the truck model on the railway model at different speed situations comprises:
recording an extreme value in the vibration condition and a limit speed and a limit position corresponding to the extreme value;
and when the truck travels to the railway area corresponding to the limit position, enabling the speed of the truck to be lower than the limit speed.
In one possible implementation, the determining the distance between the railway accident occurrence point and the truck comprises:
and laying the distributed optical fiber along the length direction of the railway, and determining the distance between the truck and the accident occurrence point through the distributed optical fiber.
In one possible implementation, the laying of the distributed optical fiber along the length direction of the railway includes:
continuously laying a plurality of distributed optical fiber sections along the length direction of the railway, and connecting a repeater between two adjacent distributed optical fiber sections;
when an accident occurs, the repeater closest to the accident occurrence point receives the data with changed state, and the repeater transmits the received data to the upper computer.
In a possible implementation manner, the transmitting, by the repeater, the received data to the upper computer includes:
and the upper computer determines the distance between the repeater and the accident occurrence point according to the received data.
In one possible implementation manner, the determining, by the upper computer according to the received data, the distance from the relay to the accident occurrence point includes:
and determining the geographical position of each repeater, and judging the distance between the truck and the accident occurrence point according to information such as the shape of a railway and the like.
The railway wagon driving safety monitoring method provided by the invention has the beneficial effects that: compared with the prior art, the method for monitoring the driving safety of the railway wagon judges the total gravity center of the carriage and the goods after the goods are loaded on the carriage. And constructing a railway model and a carriage model, then judging the vibration condition of the carriage model when the carriage model runs on the railway model at a specific speed, and generating an early warning report according to the vibration condition. When an accident occurs on a railway, the distance between the accident occurrence point and the truck is judged, and therefore the arrival time of the truck is calculated.
The total gravity center of the carriage and the goods is judged, and the railway model and the carriage model loaded with the goods are constructed, so that the vibration condition of the carriage model during running on the railway model can be judged under a specific condition, and the vibration condition of the carriage model is reflected in the early warning report, so that a certain early warning effect can be achieved on the running of the truck.
In this application, through confirming the carriage focus that has loaded the goods to its vibration condition can be accurate the prediction, early warning before the freight train traveles, and data referential is stronger. And the calculated distance between the accident occurrence point and the truck further improves the driving safety of the truck.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for monitoring the driving safety of a railway wagon according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a method for monitoring the driving safety of a railway wagon according to the present invention will now be described. The running safety monitoring method for the railway freight car comprises the following steps:
after the carriages are loaded with cargo, the overall center of gravity of each carriage along with the corresponding cargo is determined.
And constructing a railway model and a carriage model loaded with cargos, and judging the vibration condition of the carriage model when the carriage model runs on the railway model at a specific speed according to the total weight and the gravity center of the carriage and the cargos so as to generate an early warning report.
And judging the distance between the railway accident occurrence point and the truck, and calculating the arrival time of the truck.
The railway wagon driving safety monitoring method provided by the invention has the beneficial effects that: compared with the prior art, the method for monitoring the driving safety of the railway wagon judges the total gravity center of the carriage and the goods after the goods are loaded on the carriage. And constructing a railway model and a carriage model, judging the vibration condition of the carriage model when the carriage model runs on the railway model at a specific speed, and generating an early warning report according to the vibration condition. When an accident occurs on a railway, the distance between the accident occurrence point and the truck is judged, and therefore the arrival time of the truck is calculated.
The total gravity center of the carriage and the goods is judged, and the railway model and the carriage model loaded with the goods are constructed, so that the vibration condition of the carriage model during running on the railway model can be judged under a specific condition, and the vibration condition of the carriage model is reflected in the early warning report, so that a certain early warning effect can be achieved on the running of the truck.
In this application, through confirming the carriage focus that has loaded the goods to its vibration condition can be accurate the prediction, early warning before the freight train traveles, and data referential is stronger. And the calculated distance between the accident occurrence point and the truck further improves the driving safety of the truck.
In order to meet the national economic requirements, the freight transportation volume of the railway freight car is increased, the running speed of the railway freight car is correspondingly increased, and the driving safety of the railway freight car is also emphasized more and more along with the increase of the running speed of the railway freight car.
With the continuous development of science and technology, railway industry has also been developed rapidly, bring great convenience to people's transportation, but also brought many potential safety hazards to people simultaneously, such as freight train collision, derailment incident, etc., have seriously influenced people's life safety and property loss. Railway departments are also increasing the measures for safe operation of railways, such as taking safety barriers, setting up side collision systems, track detection systems, and the like.
Railway safety is a permanent theme of railway transportation, and the improvement of the railway operation safety level is always a problem of great attention and attention of railway organizations and organizations in various countries. In the process of safety management of railway enterprises, besides the establishment of laws and regulations of the system, the safety operation conditions of the whole industry must be strictly monitored and evaluated so as to master the safety trend, issue accident prevention measures in time and realize the safety management target of prevention.
The rail is because long-term use can make the wearing and tearing that the rail produced, and the staff moves the rail through the hand and examines the dolly and remove on the rail, examines the dolly through the rail and detect the rail, nevertheless the user makes the dolly outside cause the collision easily in the use, collides the rail easily and examines and equip interior key spare part, makes the inside of detecting the equipment the problem that spare part is not hard up to be damaged of appearance, causes unnecessary economic loss, influences work efficiency.
The railway freight car uses goods as main transportation objects and can be divided into general freight cars and special freight cars according to purposes, wherein the general freight cars refer to vehicles suitable for transporting various goods, such as open trucks, boxcars, flat cars and the like, and the special freight cars refer to vehicles for transporting certain goods, such as coal cars, container cars, bulk cement trucks and the like.
In the running process of a railway wagon, the railway side needs to be monitored for running safety, the situations that a road surface collapses, a mountain landslide or people play on the railway are prevented, and if the situations are met, the railway wagon needs to be timely contacted with a driver.
In the existing monitoring method for the running of the railway freight car, a sensor is mostly arranged on the freight car, the sensor can transmit the situation of the railway and the situation of the freight car in the running process in real time, and the data transmitted back by the sensor can early warn the emergent situation for a period of time in advance. However, the detection accuracy of the sensor is limited, and more importantly, since the speed of the truck is high during traveling, after the sensor detects a fault, a truck driver may not have enough time to react or the truck cannot brake in time. Because the goods are loaded on the truck, when the goods travel on uneven railway, the vibration of the carriages is large due to the connection of the carriages, and derailment is caused.
In some embodiments of the method for monitoring the driving safety of a railway wagon provided by the present application, determining the position of the total center of gravity behind each car and the corresponding cargo comprises:
and setting a test section, so that the carriages pass through the test section one by one to judge the gravity centers.
Unlike other vehicles in which the compartments are loaded with cargo and the compartments are connected to each other, which may lead to increased vibrations between adjacent compartments, the trucks of the prior art only take into account the maximum load capacity and the maximum load volume when loading. It should be noted, however, that the overall height of the center of gravity of the cargo together with the vehicle compartment is a critical factor in relation to the magnitude of the vibration amplitude. If the center of gravity of the carriage and the goods is high, the probability of rollover is high, and if the center of gravity is low, the amplitude of shaking is reduced.
In order to judge the general situation of the truck after loading the cargo, it is therefore necessary to analyze the individual cars. The total weight of the first load and the weight of the car are determined. However, the center of gravity of the entire truck after loading the cargo on the truck bed is not determined, which results in an inaccurate judgment of the condition of the truck.
Therefore, in practical application, a test section can be arranged on a railway, a carriage is dragged to pass through the test section through the traction device, a plurality of pressure sensors are arranged on the test section, and the spatial position of the carriage and the center of gravity of goods can be determined through the plurality of pressure sensors.
In some embodiments of the method for monitoring the driving safety of the railway wagon provided by the application, the step of enabling the carriages to pass through the test section one by one so as to determine the gravity center comprises the following steps:
determining the magnitude and direction of the acting force of the carriage on the test section; and the directions of a plurality of acting forces at different positions are reversely extended to form an intersection point, and the intersection point is the gravity center.
For more detailed description, a plurality of bearing groove bodies are arranged on the test section, the bearing groove bodies are located below the test section before measurement is started, after the carriage enters the test section, the bearing groove bodies ascend and are in clamping connection with wheels of the carriage for limiting, and finally the carriage and goods are supported by the bearing groove bodies.
The bearing bracket body pressure measuring device is characterized in that a pressure sensor and an angle measuring device are arranged on the bearing bracket body, the pressure sensor is used for determining the acting force, and the angle measuring device is used for determining the direction of the carriage and the direction of the whole goods on the bearing bracket body pressure. Because the size and the direction of effort are all known, according to the relative position and the stress point of a plurality of bearing cell bodies, can determine the focus position of carriage and goods with the reverse extension of the power that a plurality of bearing cell bodies received.
After the gravity center position is determined, the plurality of bearing groove bodies reset, and the carriage is connected to the previous carriage.
In some embodiments of the method for monitoring the driving safety of the railway wagon provided by the present application, the constructing the railway model and the wagon model comprises:
in the upper computer, a car model is formed by drawing a rough outer contour of the car, and the total weight is set at the corresponding gravity center of the car model.
Connecting the compartment models to form a truck model; and judging the vibration condition through the truck model and the railway model.
The size structure of the carriages is determined, and the connection relation between the adjacent carriages is also determined, namely, after the adjacent two carriages are connected, the distance between the two carriages and the relative position are determined. Because the total weight of the carriage and the goods can be determined, and the gravity center of the carriage and the goods is determined, more importantly, the maximum allowable swinging angle between the carriage and the carriage is clear by adopting a specific structural connection between the carriages.
Based on the materials, the total weight of each carriage and the goods and the gravity center position of each carriage and the goods can be input into the upper computer together in the upper computer. The upper computer plans a simple model of the truck according to the rule of the carriage, only the contour of the carriage needs to be drawn in the model, and the relative position and the size of the wheels of the carriage need to be marked emphatically. The carriage and the total weight of the goods are arranged at the center of gravity in the upper computer, and then the vibration states of the whole truck at different speeds are simulated in the upper computer, so that reference data are provided for safe running of the truck.
In some embodiments of the method for monitoring the driving safety of the railway wagon provided by the application, the step of judging the vibration condition through the wagon model and the railway model includes:
and placing the truck model on the railway model in the upper computer.
And simulating the vibration condition of the truck model on the railway model under different speed conditions.
The running route of the trucks is determined, and some trucks need to go back and forth for multiple times on one route, so a railway model can be constructed by the upper computer according to data provided by methods such as cameras on the trucks, construction drawings of the railway, actual measurement, satellite shooting and the like.
After a railway model is built, the built carriage model is placed on the railway model, then the carriage model runs on the railway model at a certain speed, and in order to simulate the running state of a truck more accurately, gravity parameters are set through an upper computer, so that the carriage model bears the same gravity acceleration as the actual gravity acceleration.
During the simulation operation, the upper computer records the vibration condition of the carriage relative to the railway model at different speeds and the relative vibration condition between two adjacent carriage models in real time. If the vibration condition of the truck in a section of railway model at a certain speed exceeds a preset standard, recording the section at the moment, determining the position of the truck in the actual railway, and reducing the vibration in a mode of reducing the speed in advance and the like.
In some embodiments of the method for monitoring the driving safety of the railway wagon provided by the application, simulating the vibration condition of the wagon model on the railway model under different speed conditions comprises:
and recording extreme values in the vibration condition and the extreme speeds and the extreme positions corresponding to the extreme values.
And when the truck travels to the railway area corresponding to the limit position, enabling the speed of the truck to be lower than the limit speed.
When the truck is driven to the position where the extreme value appears, the speed of the truck can be reduced in advance, so that the amplitude of vibration is reduced to the maximum extent.
In some embodiments of the method for monitoring the driving safety of the railway wagon provided by the application, the step of judging the distance between the railway accident occurrence point and the wagon comprises the following steps:
and laying the distributed optical fiber along the length direction of the railway, and determining the distance between the truck and the accident occurrence point through the distributed optical fiber.
In practical application, the distributed optical fiber can be laid along the length direction of the railway, the distributed optical fiber is laid along the length direction of the railway, the truck runs on the distributed optical fiber, the state of the distributed optical fiber is changed under the pressure, and the current running position of the truck can be known clearly through the characteristic. More importantly, when the state of the railway changes, the falling rocks on the railway are taken as an example, the distributed optical fibers can change when the falling rocks impact the railway, the distance between the truck and the falling rocks can be determined through the distributed optical fibers, the time of the truck reaching and the allowed rescue time can be determined according to the speed of the current truck, and therefore early warning is carried out on the truck in advance.
In some embodiments of the method for monitoring the driving safety of the railway wagon provided by the present application, the laying of the distributed optical fiber along the length direction of the railway comprises:
a plurality of distributed optical fiber sections are continuously paved along the length direction of the railway, and a repeater is connected between two adjacent distributed optical fiber sections.
When an accident occurs, the repeater closest to the accident occurrence point receives the data with changed state, and transmits the received data to the upper computer.
Although the distributed optical fiber can detect changes in the external environment, the accuracy of the signal detected by the distributed optical fiber is reduced as the length of the distributed optical fiber is longer, that is, if the distributed optical fiber directly transmits data from a state change point, more noise is mixed in the data, and thus the result is inaccurate.
In order to solve the above problems, in the present application, the distributed optical fibers are arranged in a segment-by-segment and continuous manner, repeaters are connected between two adjacent distributed optical fiber segments, the repeaters are arranged in a corresponding order, the geographic positions of the repeaters are determined, that is, the data returned by the repeaters can know which repeater sent back, and the distance from the repeater sending back the data to the monitoring room can be determined according to related information recorded in advance or a map.
The embodiment is that when the state of a section of distributed optical fiber is obviously changed, the repeater at the end of the section of distributed optical fiber detects the position and the strength of the state change, and the repeater directly transmits the data of the state change back to the monitoring room.
In some embodiments of the method for monitoring the driving safety of the railway wagon, the transmitting the received data to the upper computer by the repeater includes:
and the upper computer determines the distance between the repeater and the accident occurrence point according to the received data.
After installation of the repeater, the location of the repeater on the railroad needs to be determined because only if the geographic location of the repeater is determined can the host computer in the monitoring room infer the time required for the shipment to travel to the point in the distributed optical fiber where the state change occurred.
The shortest distance of a repeater relative to the monitoring room is easily determined but the distance of the corresponding repeater from the truck along the length of the railway needs to be determined. Therefore, firstly, the upper computer sends a detection signal to the distributed optical fiber through the repeaters, when the state of a certain point on the distributed optical fiber is changed to a large extent, the repeater closest to the point receives a return signal, each repeater corresponds to a serial number, and at the moment, the repeater transmits the return signal and the corresponding serial number to the upper computer. The upper level can determine the geographical position of the repeater according to the number, and the position of the truck can be obtained through a satellite.
In some embodiments of the method for monitoring the driving safety of the railway wagon, the determining, by the upper computer according to the received data, the distance from the repeater to the accident occurrence point includes:
and determining the geographical position of each repeater, and judging the distance between the truck and the accident occurrence point according to information such as the shape of the railway.
The upper computer in the monitoring room can know the specific position of the repeater according to the number, and the distance between the state change point and the repeater can be determined through the return signal sent back by the repeater. The position of the truck can be determined by satellite. The distance between the truck and the state change on the distributed optical fiber section along the length direction of the track along the railway direction can be obtained through a map, and the time of reaching the state change point is determined according to the speed of the truck.
For further explanation, the corresponding repeater and truck may be calibrated on a map, the distance between the repeater and the truck may be determined by the shape of the railway, and the distance may be added to the distance from the state change point to the repeater to obtain the final total distance.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The running safety monitoring method of the railway freight car is characterized by comprising the following steps:
after loading cargos in the carriages, judging the center of gravity of each carriage together with the corresponding cargo assembly;
constructing a railway model and a carriage model loaded with the cargoes, and judging the vibration condition of the carriage model when the carriage model runs on the railway model at a specific speed according to the total weight of the carriage and the cargoes and the gravity center so as to generate an early warning report;
and judging the distance between the railway accident occurrence point and the truck, and calculating the arrival time of the truck.
2. The method as claimed in claim 1, wherein said determining the position of the center of gravity of each of said cars together with the corresponding cargo comprises:
and setting a test section, and enabling the carriages to pass through the test section one by one so as to judge the gravity center.
3. A method for monitoring the driving safety of a railway wagon as claimed in claim 2, wherein the determining the center of gravity by passing the cars one by one through the test section comprises:
determining the magnitude and direction of the acting force of the carriage on the test section; and the directions of the acting forces at different positions are reversely extended to form an intersection point, and the intersection point is the gravity center.
4. The method for monitoring the driving safety of a railway wagon as claimed in claim 1, wherein the constructing the railway model and the wagon model comprises:
drawing a substantial outer contour of the vehicle cabin to form the vehicle cabin model, and setting the total weight average at the gravity center corresponding to the vehicle cabin model in a host computer;
connecting the carriage models to form a truck model; and judging the vibration condition through the truck model and the railway model.
5. The method for monitoring the driving safety of a railway wagon as claimed in claim 4, wherein the determining the vibration condition by the wagon model and the railway model comprises:
placing the freight car model on the railway model in the host computer;
simulating the vibration situation of the truck model on the railway model under different speed conditions.
6. The method of monitoring the driving safety of a railway wagon of claim 5, wherein the simulating the vibration of the wagon model on the railway model at different speeds comprises:
recording an extreme value in the vibration condition and a limit speed and a limit position corresponding to the extreme value;
and when the truck travels to the railway area corresponding to the limit position, enabling the speed of the truck to be lower than the limit speed.
7. The method as claimed in claim 4, wherein said determining the distance between the railway accident occurrence point and the truck comprises:
and laying distributed optical fibers along the length direction of the railway, and determining the distance between the truck and the accident occurrence point through the distributed optical fibers.
8. A method for monitoring the driving safety of a railway wagon according to claim 7, wherein the laying of the distributed optical fiber along the length direction of the railway comprises:
continuously laying a plurality of distributed optical fiber sections along the length direction of the railway, and connecting a repeater between two adjacent distributed optical fiber sections;
when an accident occurs, the repeater closest to the accident occurrence point receives the data with changed state, and the repeater transmits the received data to the upper computer.
9. The railway wagon driving safety monitoring method as claimed in claim 8, wherein the transmitting the received data to the upper computer by the repeater comprises:
and the upper computer determines the distance between the repeater and the accident occurrence point according to the received data.
10. The railway wagon driving safety monitoring method as claimed in claim 9, wherein the determining, by the upper computer, the distance from the repeater to the accident occurrence point according to the received data comprises:
and determining the geographical position of each repeater, and judging the distance between the truck and the accident occurrence point according to information such as the shape of a railway and the like.
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| CN105564468A (en) * | 2016-03-07 | 2016-05-11 | 成都优立科科技有限公司 | Railway freight car traffic safety monitoring system and method |
| CN109615269A (en) * | 2018-12-28 | 2019-04-12 | 西南交通大学 | A kind of railway freight train operating safety appraisal procedure and system |
| CN113011809A (en) * | 2021-01-26 | 2021-06-22 | 浙江双友物流器械股份有限公司 | Cargo displacement monitoring method for multi-path condition transportation |
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