A method for detecting the main line of an EMU

Abstract

The invention discloses a method for detecting main tracks of D-series high-speed trains. When the D-series high-speed trains pass in sequence, signals of train incoming-and-outgoing are detected andsent; train number information and train information are uniformly identified; dynamic detection is carried out on bearings of the D-series high-speed trains through a D-series high-speed train bearing state monitoring device TADS; dynamic detection is carried out on train body bottom, side skirt plates, train end connection devices and bogie operation failure through a D-series high-speed train fault dynamic detection device TEDS; boundary dimension of wheels is detected through a wheel set dimension dynamic detection system TWDS; wheel-rail force is detected though a vehicle running state ground safety monitoring system TPDS; the running state of the trains, overload and unbalanced load, wheel out-of-roundness and wheel tread abrasion are determined based on a detection result; and dataprocessing and remote transmission are carried out through indoor processing equipment in an equipment room. The state detection of online running parts of the train and the monitoring of the qualityof the maintenance work performed in different places are achieved through the network, and the early warning ability and networked tracking ability in the early stage of failure are improved.

Description

technical field [0001] The invention belongs to the field of vehicle maintenance and detection, and in particular relates to a method for detecting the main line of an EMU. Background technique [0002] The structure of the EMU has the characteristics of complex structure, many parts, low height of the floor, and closed side skirts. During operation, most of them are high platforms, one-stop direct, long-distance turnaround, and the stop time is short, so it cannot In the middle of the process, inspect and overhaul the parts status of the bottom plate, bogie and skirt. It is difficult to confirm and detect the component damage caused by the impact of foreign objects in the operation process, and it is easy to cause the return operation of the EMU to run with diseases. Especially for EMUs running at a speed of 250 kilometers per hour on ballasted tracks, it is more likely to cause foreign objects to hit the bottom parts during high-speed operation, causing safety hazards to ...

AI Technical Summary

Problems solved by technology

[0003] The current international and domestic EMU inspection mode is to enter the EMU depots of various railway bureaus and the maintenance depots of EMU bases for primary and secondary repairs after the EMUs have been in continuous operation for one day (or two days). The maintenance mode is the traditional trench Manual maintenance, the main means of maintenance is to check the key components with simple tools and flashlights. This maintenance method is inefficient, and the maintenance effect is completely dependent on the experience of the maintenance workers. For some gradual hidden faults such as loose bolts, this kind of maintenance The method is that accurate discovery and treatment cannot be realized, so that the maintenance of EMUs is incomplete, untimely, and inaccurate

With the high-intensity use of EMUs, there will be more and more structural abnormalities, and the traditional manual maintenance method can no longer meet the maintenance needs of EMUs

[0004] In the traditional EMU inspection method, only the deformation, displacement, and fall-off of major components are checked, and the inspection and protection of smaller, gradual, and more complex mechanical components are not really realized.

In this mode, the EMUs often run with illnesses, but when the EMUs are running at high speed, small faults may also lead to huge accidents

Images