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A method and device for judging a locking fault of a rail vehicle

A rail vehicle and fault technology, which is applied in the field of judgment of rail vehicle locking faults, can solve problems such as high cost, large manpower and material resources

Active Publication Date: 2021-03-16
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method is to strengthen the inspection and maintenance of the shaft speed sensor. When the maintenance personnel find that the state of the shaft speed sensor is abnormal, replace the shaft speed sensor in time to reduce the number of false locks of the rail vehicle, but this method will consume a lot of manpower and material resources
The second method is to use a dual-channel shaft speed sensor, that is, when the signals of the two shaft speed sensors are interrupted at the same time, it will be judged that the rail vehicle has a locking fault instead of falsely reporting a dead fault, but this method needs to be replaced Large number of shaft speed sensors, high cost

Method used

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  • A method and device for judging a locking fault of a rail vehicle
  • A method and device for judging a locking fault of a rail vehicle
  • A method and device for judging a locking fault of a rail vehicle

Examples

Experimental program
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Embodiment 1

[0036] see figure 1 , figure 1 It is a flow chart of a method for judging a locking fault of a rail vehicle provided in the present application, and the method may include the following steps 101-105.

[0037] Step 101: When it is detected that the maximum axle speed of the rail vehicle is greater than or equal to the first standard speed and any other axle speed is less than the second standard speed, and the duration is greater than or equal to the first preset value, the brake control device detects that the axle Whether the speed signal is instantaneous.

[0038] Each carriage of a rail vehicle has 4 axles. Under traction or coasting conditions, in the prior art, when it is detected that the maximum axle speed of the 4 axles of the car is greater than or equal to the first standard speed, for example, 10km / h, and the remaining 3 axles If the speed of any one of the shafts is less than the second standard speed, such as 3km / h, and lasts for more than the first preset valu...

Embodiment 2

[0051] see image 3 , image 3 It is a flow chart of a method for judging a locking fault of a rail vehicle provided by the present application, and the method may include the following steps 301-310.

[0052] Steps 301-305 are the same as steps 101-105 in Embodiment 1, and will not be repeated here.

[0053] Step 306: When the network control system determines that the communication between the network control system and the traction converter is normal, the network control system determines whether the shaft speed signal of the traction converter is normal within a preset time.

[0054] As a possible implementation manner, those skilled in the art may set the preset time according to actual needs, which is not specifically limited in this embodiment. For example, when the speed of the rail vehicle is greater than or equal to 50 km / h, the preset time is 8 seconds; or, when the speed of the rail vehicle is less than 50 km / h, the preset time is 10 seconds.

[0055] During th...

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PUM

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Abstract

The invention discloses a method and device for judging a rail vehicle locking fault. The method comprises the steps that when it is detected that the maximum axle speed of a railway vehicle is greater than or equal to a first standard speed and any other axle speed is less than a second standard speed, and the duration is greater than or equal to a first preset value, a brake control device detects whether the axle speed signal is instantaneously disconnected or not, and if not, a network control system of the rail vehicle reports a locking fault; if so, the network control system reports a disconnection fault of a speed generator so as to enable the rail vehicle to enter a coasting working condition, wherein the coasting working condition is a working condition that the rail vehicle turns off power to enter a sliding state; and after the rail vehicle enters the coasting working condition, the network control system judges whether communication between the network control system and atraction converter is normal or not, and if not, the network control system reports a locking fault. By adopting the judgment method, the occurence frequency of the mistaken locking fault is reduced.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis, in particular to a method and device for judging a locking fault of a rail vehicle. Background technique [0002] With the rapid development of rail transit, from "four vertical and four horizontal" to "eight vertical and eight horizontal", it has greatly met the growing demand for passenger transportation and provided convenience for people's lives. However, because the shaft speed sensor signal in the rail vehicle will be interrupted momentarily, and then the rail vehicle will be prompted for a locking fault, it needs to be stopped immediately, and the maintenance personnel will get off the vehicle for inspection. However, it often happens that the maintenance personnel get off the car and check and find that there is no abnormal situation. The above-mentioned locking fault prompt becomes a false lock fault prompt, which greatly affects the operation of the rail vehicle. [0003] At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T17/22
CPCB60T17/228
Inventor 周健曲子扬刘春涛马国栋吴学超
Owner CRRC QINGDAO SIFANG CO LTD