CN108956174B - Simulation test method for loopback rescue function of CRH3A motor train unit - Google Patents
Simulation test method for loopback rescue function of CRH3A motor train unit Download PDFInfo
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Abstract
A simulation test method for functions of a CRH3A motor train unit loopback rescue device relates to the technical field of testing of a loopback vehicle braking system in the railway industry, and is characterized in that a set of pressure regulating simulation device is designed according to structural principle characteristics of a CRH3A motor train unit braking system, the pressure regulating simulation device comprises a pressure regulating valve, a main air pipe blast pressure gauge and a train pipe blast pressure gauge, the control of the train pipe blast pressure in a loopback state is simulated through a series of connection operations of a train main air pipe cock, a main air cylinder, a train pipe and the like, the function of charging the train pipe to the main air pipe in the loopback state is verified, and the function of reducing the pressure of the train pipe in the loopback state is tested. By applying the testing method, the locomotive is not required to be used for frequent mechanical coupling, the function test of the loopback device can be performed in advance in a static stage, the function test of the loopback device can be completed without being limited by the coupling condition of the locomotive, and the testing method has the advantages of simplicity, easiness in operation, high accuracy, low production cost, high production efficiency and the like.
Description
Technical Field
The invention relates to the technical field of testing of a brake system of a returning vehicle in the railway industry, in particular to a simulation test method for a returning rescue function of a CRH3A motor train unit.
Background
At present, a method for testing the function of the back-sending rescue device of the CRH3A motor train unit train is to verify the function of the back-sending rescue device of the motor train unit by a railway locomotive through a linked railway locomotive. The general procedure is as follows:
(1) a linked railway locomotive: mechanically linking the railway locomotive and the motor train unit according to the actual returning transportation mode of the motor train unit train;
(2) the motor train unit returns and prepares: setting the working mode of the motor train unit as a rescued mode, and opening a train pipe of the motor train unit to supply air to a main air pipe to plug a door;
(3) and (4) returning related function verification: the train pipe of the motor train unit is supplied with air by the railway locomotive and is controlled, and testers check and confirm the function of charging the air into the main air pipe by the train pipe of the motor train unit and the function of braking conversion of the rescue device after the train pipe is decompressed. As shown in fig. 1, the functional verification principle of the CRH3A motor train unit loopback rescue device is as follows: after the motor train unit is mechanically linked with the railway locomotive, a motor train unit train pipe is communicated with the railway locomotive train pipe, the air pressure of the motor train unit train pipe is controlled by the railway locomotive, a pressure sensor of the train pipe collects a decompression signal in real time, the decompression signal is fed back to a BCU (body control unit) loopback rescue module, the signal is converted by the BCU loopback rescue module, a corresponding code is output to a motor train unit brake level train line, and the motor train unit controls the BCU of the whole train to output a corresponding brake force through the code of the brake level train line.
The method has the advantages that the loopback function of the motor train unit can be accurately verified, but the method has obvious defects, such as: the process resource required by the test, namely the quantity of the railway locomotives is relatively scarce, the test preparation process, namely the locomotive connection process is relatively complicated, and the test environment is limited by site conditions because the locomotives enter a production site and are limited by factory conditions. Therefore, the existing method is not convenient for mass production organization of a host factory.
Disclosure of Invention
The invention provides a simulation test method for a CRH3A motor train unit loopback rescue function, which aims to solve the technical problems that the existing test method is inconvenient for a host factory to carry out mass production organization due to the fact that the number of railway locomotives is relatively scarce, the locomotive connection process is relatively complicated, and the locomotives enter a production field and are limited by factory conditions.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a simulation test method for a loopback rescue function of a CRH3A motor train unit comprises the following steps:
step one, verifying that the functions of an air supply cock and a check valve for a main air pipe of a train pipe of the motor train unit are good, and the method comprises the following substeps:
step 1.1, opening a train pipe of a first train of the motor train unit to supply air to a main air pipe, and checking that no pressure exists in the train pipe on a double-needle wind pressure meter of a driver table of a first train cab, so that the function of a one-way valve can be verified to be good;
step 1.2, cutting off a total air pipe cock at the end part of the head vehicle and the end part of an adjacent vehicle, and supplying air to the total air pipe cock by a total air cylinder of the head vehicle; a pressure regulating simulator is formed by utilizing a pressure regulating valve, a main air pipe air pressure gauge, a train pipe air pressure gauge, a main air pipe quick test connector, a train pipe quick test connector and a plurality of air pipes;
step 1.3, connecting the input end of the pressure regulating valve with a main air pressure test port in a first car BCU loopback rescue module through a main air pipe quick test connector and an air pipe, so that the air pressure at the input end of the pressure regulating valve is taken from a main air cylinder, and connecting a main air pipe air pressure gauge between the input end of the pressure regulating valve and the main air pressure test port, so that the main air pipe air pressure gauge displays the air pressure at the input end of the pressure regulating valve taken from the main air cylinder in real time; then, the output end of the pressure regulating valve is connected with a train pipe pressure testing port in the first train BCU loopback rescue module through a train pipe quick testing connector and an air pipe, and the train pipe quick testing connector is pushed to a first clamping position of the train pipe pressure testing port, so that the output end of the pressure regulating valve is connected into a train pipe; the train pipe air pressure gauge is connected between the output end of the pressure regulating valve and a train pipe pressure testing port, so that the train pipe air pressure gauge displays the air pressure at the output end of the pressure regulating valve in real time;
step 1.4, charging air to the train pipe through the pressure regulating simulation device, and checking that the pressure of the main air pipe rises to be consistent with the air pressure of the train pipe on a double-needle air pressure meter of a driver table of a head train cab, so that the function of the air supply cock of the train pipe to the main air pipe can be verified to be good;
step two, verifying the loopback rescue function of the motor train unit, comprising the following substeps:
step 2.1, setting the working mode of the motor train unit to be a rescued mode by a driver station of a head-car cab;
2.2, connecting the input end of the pressure regulating valve with a main air pressure test port in the first car BCU loopback rescue module through a main air pipe quick test connector and an air pipe, so that the air pressure at the input end of the pressure regulating valve is taken from a main air cylinder, and connecting a main air pipe air pressure gauge between the input end of the pressure regulating valve and the main air pressure test port, so that the main air pipe air pressure gauge displays the air pressure at the input end of the pressure regulating valve taken from the main air cylinder in real time; then, the output end of the pressure regulating valve is connected with a train pipe pressure testing port in the first train BCU loopback rescue module through a train pipe quick testing connector and an air pipe, and the train pipe quick testing connector is pushed to a second clamping position of the train pipe pressure testing port, so that the output end of the pressure regulating valve is connected to a pressure sensor on a single-side train pipe of the train pipe pressure testing port; the train pipe air pressure gauge is connected between the output end of the pressure regulating valve and a train pipe pressure testing port, so that the train pipe air pressure gauge displays the air pressure at the output end of the pressure regulating valve in real time;
and 2.3, outputting a pressure value of the corresponding brake level through the pressure regulating simulation device to simulate the pressure change of the train pipe, acquiring a pressure change signal of the train pipe in real time by the train pipe pressure sensor, feeding the signal back to the BCU (body control unit) feedback rescue module, converting the signal by the BCU feedback rescue module to output a corresponding code to a train line of the brake level of the motor train unit, controlling the BCU of the whole train to output a corresponding brake force by the motor train unit through the code of the train line of the brake level, and further completing the verification of the feedback rescue function of the motor train unit.
The invention has the beneficial effects that: by applying the testing method, the locomotive is not required to be used for frequent mechanical coupling, the function test of the loopback device can be performed in advance in a static stage, the function test of the loopback device can be completed without being limited by the coupling condition of the locomotive, and the testing method has the advantages of simplicity, easiness in operation, high accuracy, low production cost, high production efficiency and the like.
Drawings
Fig. 1 is a schematic diagram of the function verification of a conventional CRH3A motor train unit loopback rescue device by using a railway locomotive.
Fig. 2 is a schematic diagram of a principle of a simulation test method for a loopback rescue function of a CRH3A motor train unit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2, the simulation test method for the loopback rescue function of the CRH3A motor train unit comprises the following steps:
step one, verifying that the functions of an air supply cock and a check valve for a main air pipe of a train pipe of the motor train unit are good, and the method comprises the following substeps:
step 1.1, opening a train pipe of a first train of the motor train unit to supply air to a main air pipe, and checking that no pressure exists in the train pipe on a double-needle wind pressure meter of a driver table of a first train cab, so that the function of a one-way valve can be verified to be good;
step 1.2, cutting off a main air pipe cock at the end part of the head car and the end parts of adjacent cars so as to eliminate the influence of the main air pipes of the adjacent cars on a test result; a main air pipe cock for supplying air to a main air pipe by a main air cylinder of the head-cut train is cut off so as to eliminate the influence of the main air cylinder of the motor train unit on a test result; a pressure regulating simulator is formed by utilizing a pressure regulating valve, a main air pipe air pressure gauge, a train pipe air pressure gauge, a main air pipe quick test connector, a train pipe quick test connector and a plurality of air pipes;
step 1.3, connecting the input end of the pressure regulating valve with a main air pressure test port in a first car BCU loopback rescue module through a main air pipe quick test connector and an air pipe, so that the air pressure at the input end of the pressure regulating valve is taken from a main air cylinder, and connecting a main air pipe air pressure gauge between the input end of the pressure regulating valve and the main air pressure test port, so that the main air pipe air pressure gauge displays the air pressure at the input end of the pressure regulating valve taken from the main air cylinder in real time; then, the output end of the pressure regulating valve is connected with a train pipe pressure testing port in the first train BCU loopback rescue module through a train pipe quick testing connector and an air pipe, and the train pipe quick testing connector is pushed to a first clamping position of the train pipe pressure testing port, so that the output end of the pressure regulating valve is connected into a train pipe; the train pipe air pressure gauge is connected between the output end of the pressure regulating valve and a train pipe pressure testing port, so that the train pipe air pressure gauge displays the air pressure at the output end of the pressure regulating valve in real time; the pressure test port of the train pipe in the BCU loopback rescue module is a two-section test port and comprises two card positions, wherein the first card position is a position where the test port is communicated with the train pipes on two sides of the test port, and the second card position is a position where the test port is communicated with the train pipe on one side of the test port;
step 1.4, at the moment, the main air pipe of the head car is in a windless state, the train pipe is charged with air through the pressure regulating simulation device, the pressure of the main air pipe is checked to be increased to be consistent with the air pressure of the train pipe on a double-needle air pressure gauge of a driver table of a cab of the head car, and the good function of the air supply cock of the train pipe to the main air pipe can be verified;
step two, verifying the loopback rescue function of the motor train unit, comprising the following substeps:
step 2.1, setting the working mode of the motor train unit to be a rescued mode by a driver station of a head-car cab;
2.2, connecting the input end of the pressure regulating valve with a main air pressure test port in the first car BCU loopback rescue module through a main air pipe quick test connector and an air pipe, so that the air pressure at the input end of the pressure regulating valve is taken from a main air cylinder, and connecting a main air pipe air pressure gauge between the input end of the pressure regulating valve and the main air pressure test port, so that the main air pipe air pressure gauge displays the air pressure at the input end of the pressure regulating valve taken from the main air cylinder in real time; then, the output end of the pressure regulating valve is connected with a train pipe pressure testing port in the first train BCU loopback rescue module through a train pipe quick testing connector and an air pipe, and the train pipe quick testing connector is pushed to a second clamping position of the train pipe pressure testing port, so that the output end of the pressure regulating valve is connected to a pressure sensor on a single-side train pipe of the train pipe pressure testing port; the train pipe air pressure gauge is connected between the output end of the pressure regulating valve and a train pipe pressure testing port, so that the train pipe air pressure gauge displays the air pressure at the output end of the pressure regulating valve in real time;
and 2.3, outputting a pressure value of the corresponding brake level through the pressure regulating simulation device to simulate the pressure change of the train pipe, acquiring a pressure change signal of the train pipe in real time by the train pipe pressure sensor, feeding the signal back to the BCU (body control unit) feedback rescue module, converting the signal by the BCU feedback rescue module to output a corresponding code to a train line of the brake level of the motor train unit, controlling the BCU of the whole train to output a corresponding brake force by the motor train unit through the code of the train line of the brake level, and further completing the verification of the feedback rescue function of the motor train unit.
Claims (1)
1. A simulation test method for a loopback rescue function of a CRH3A motor train unit is characterized by comprising the following steps:
step one, verifying that the functions of an air supply cock and a check valve for a main air pipe of a train pipe of the motor train unit are good, and the method comprises the following substeps:
step 1.1, opening a train pipe of a first train of the motor train unit to supply air to a main air pipe, and checking that no pressure exists in the train pipe on a double-needle wind pressure meter of a driver table of a first train cab, so that the function of a one-way valve can be verified to be good;
step 1.2, cutting off a total air pipe cock at the end part of the head vehicle and the end part of an adjacent vehicle, and supplying air to the total air pipe cock by a total air cylinder of the head vehicle; a pressure regulating simulator is formed by utilizing a pressure regulating valve, a main air pipe air pressure gauge, a train pipe air pressure gauge, a main air pipe quick test connector, a train pipe quick test connector and a plurality of air pipes;
step 1.3, connecting the input end of the pressure regulating valve with a main air pressure test port in a first car BCU loopback rescue module through a main air pipe quick test connector and an air pipe, so that the air pressure at the input end of the pressure regulating valve is taken from a main air cylinder, and connecting a main air pipe air pressure gauge between the input end of the pressure regulating valve and the main air pressure test port, so that the main air pipe air pressure gauge displays the air pressure at the input end of the pressure regulating valve taken from the main air cylinder in real time; then, the output end of the pressure regulating valve is connected with a train pipe pressure testing port in the first train BCU loopback rescue module through a train pipe quick testing connector and an air pipe, and the train pipe quick testing connector is pushed to a first clamping position of the train pipe pressure testing port, so that the output end of the pressure regulating valve is connected into a train pipe; the train pipe air pressure gauge is connected between the output end of the pressure regulating valve and a train pipe pressure testing port, so that the train pipe air pressure gauge displays the air pressure at the output end of the pressure regulating valve in real time;
step 1.4, charging air to the train pipe through the pressure regulating simulation device, and checking that the pressure of the main air pipe rises to be consistent with the air pressure of the train pipe on a double-needle air pressure meter of a driver table of a head train cab, so that the function of the air supply cock of the train pipe to the main air pipe can be verified to be good;
step two, verifying the loopback rescue function of the motor train unit, comprising the following substeps:
step 2.1, setting the working mode of the motor train unit to be a rescued mode by a driver station of a head-car cab;
2.2, connecting the input end of the pressure regulating valve with a main air pressure test port in the first car BCU loopback rescue module through a main air pipe quick test connector and an air pipe, so that the air pressure at the input end of the pressure regulating valve is taken from a main air cylinder, and connecting a main air pipe air pressure gauge between the input end of the pressure regulating valve and the main air pressure test port, so that the main air pipe air pressure gauge displays the air pressure at the input end of the pressure regulating valve taken from the main air cylinder in real time; then, the output end of the pressure regulating valve is connected with a train pipe pressure testing port in the first train BCU loopback rescue module through a train pipe quick testing connector and an air pipe, and the train pipe quick testing connector is pushed to a second clamping position of the train pipe pressure testing port, so that the output end of the pressure regulating valve is connected to a pressure sensor on a single-side train pipe of the train pipe pressure testing port; the train pipe air pressure gauge is connected between the output end of the pressure regulating valve and a train pipe pressure testing port, so that the train pipe air pressure gauge displays the air pressure at the output end of the pressure regulating valve in real time;
and 2.3, outputting a pressure value of the corresponding brake level through the pressure regulating simulation device to simulate the pressure change of the train pipe, acquiring a pressure change signal of the train pipe in real time by the train pipe pressure sensor, feeding the signal back to the BCU (body control unit) feedback rescue module, converting the signal by the BCU feedback rescue module to output a corresponding code to a train line of the brake level of the motor train unit, controlling the BCU of the whole train to output a corresponding brake force by the motor train unit through the code of the train line of the brake level, and further completing the verification of the feedback rescue function of the motor train unit.
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| CN109677385B (en) * | 2018-12-29 | 2021-12-31 | 南京中车浦镇海泰制动设备有限公司 | EMUs loopback rescue and use instruction conversion equipment |
| CN109703595B (en) * | 2019-01-29 | 2020-12-22 | 中车青岛四方机车车辆股份有限公司 | Double-mode rescue conversion device and method for railway vehicle and vehicle |
| CN109703596B (en) * | 2019-01-29 | 2020-12-22 | 中车青岛四方机车车辆股份有限公司 | Double-mode rescue conversion device and method for railway vehicle and vehicle |
| CN109703594A (en) * | 2019-01-29 | 2019-05-03 | 中车青岛四方机车车辆股份有限公司 | A kind of rail vehicle is without fiery loop back device, vehicle and method |
| CN112082746A (en) * | 2020-09-07 | 2020-12-15 | 中车长春轨道客车股份有限公司 | Motor train unit wiper swing abnormity monitoring and self-optimizing system |
| CN113246945A (en) * | 2021-06-01 | 2021-08-13 | 成都大学 | Rail vehicle rescue returning device and rescue method thereof |
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| CN206049704U (en) * | 2016-09-30 | 2017-03-29 | 中车长春轨道客车股份有限公司 | Railcar loopback supervising device |
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