A simulation test method for loopback rescue function of crh3a EMU
A technology of EMUs and functions, applied in the direction of railway vehicle testing, etc., can solve the problems of inconvenient test methods for mass production organization of main engine factories, scarcity of railway locomotives, cumbersome locomotive coupling process, etc., to achieve easy operation, low production cost, The effect of high production efficiency
Active Publication Date: 2020-02-07
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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Problems solved by technology
[0007] In order to solve the technical problems existing in the existing test method for railway locomotives, the number of railway locomotives is relatively scarce, the process of connecting locomotives is relatively cumbersome, and the locomotives entering the production site are limited by the conditions of the factory building, which makes the existing test methods inconvenient for the mass production organization of the main engine factory. , the present invention provides a simulation test method for loopback rescue function of CRH3A EMU
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] Such as figure 2 As shown, the simulation test method of the CRH3A type EMU loopback rescue function of the present invention comprises the following steps:
[0024] Step 1. Verify that the EMU train pipe supplies air to the main air pipe and the check valve functions well, including the following sub-steps:
[0025] Step 1.1. Open the train pipe of the head car of the starting unit to supply the air to the main air pipe. Check that there is no pressure in the train pipe on the double-needle air pressure gauge on the driver's cab of the head car, and it can be verified that the function of the one-way valve is good. ;
[0026] Step 1.2, cut off the main air duct plug door at the end of the head car and the end of the adjacent car to eliminate the influence of the main air duct of the adjacent car on the test results; cut off the main air duct that s...
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The present invention provides a simulation test method of CRH3A D-series high-speed train return and rescue functions, and relates to the technical field of railway industry return vehicle braking system test. In the method, a set of pressure regulation simulation device is designed according to a CRH3A D-series high-speed train braking system structure principle features, a series of connectionoperation such as a main blast line cock, a main air reservoir and a train pipe of a vehicle is performed to simulate the control for the train pipe wind pressure in a return state, verify a functionof wind charging to the main blast line by the train pipe in the return state and test a train pipe pressure reduction vehicle braking function in the return state. The test method provided by the invention does not need to use a locomotive to perform frequent mechanical coupling, can perform return device function test in advance in a process segment, can complete the return device function testwithout being restricted by a condition of the railway locomotive coupling, and is simple, easy to operate, high in accuracy, low in production cost and high in production efficiency.
Description
technical field [0001] The invention relates to the technical field of testing the braking system of a loopback vehicle in the railway industry, in particular to a simulation test method for the loopback rescue function of a CRH3A type EMU. Background technique [0002] At present, the method adopted for the function test of the return rescue device of the CRH3A EMU is to verify the function of the return rescue device of the EMU by connecting the locomotive to the railway locomotive. The general operation steps are as follows: [0003] (1) Coupled railway locomotive: according to the actual transport mode of the EMU train, the railway locomotive and the EMU are mechanically linked; [0004] (2) EMU return preparation: set the EMU working mode to the rescued mode, and open the EMU train pipe to supply air to the main air duct; [0005] (3) Verification of loopback related functions: the locomotive supplies air to the train pipes of the EMU, and controls the train pipes of ...
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IPC IPC(8): G01M17/08
CPCG01M17/08
Inventor 贾伟男刘海龙刘殿卫
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD