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Method and system for preventing applied accidental parking brake on railway train

A technology for parking brakes and rail trains, which is applied to braking safety systems, automatic starting devices, etc.

Active Publication Date: 2011-09-14
CHINA RAILWAYS CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the trains pulled by traditional diesel locomotives with a speed of 160km or less, the braking system is mainly controlled by mechanical equipment and pneumatic equipment, and there is no train parking braking system. When the train is parked, iron shoes are generally used Between the wheel and the track to prevent the car from slipping, which is inconvenient and unsafe to use
In the new high-speed EMUs, the parking brake system is equipped. The driver presses the parking application button in the cab, and the braking system will control the pulse solenoid valve in the parking brake control device of each trailer to the electromagnet in the application position. The action causes the parking brake cylinder to exhaust outward, and the spring applies a certain braking force to the train to prevent the train from slipping; the driver presses the release button in the cab, and the pulse solenoid valve is in the release position. The solenoid action controls the parking brake. The cylinder is inflated, and the braking force applied by the spring is removed, and the train can run normally; but in actual use, due to the failure of the parking brake device or the misoperation of the driver, the parking brake will be accidentally activated when the train is in a non-stationary state. Application, parking brake device faults, such as the spring that applies the parking brake force to the train is stuck and cannot cancel the spring force, the parking brake cylinder leaks, or the control circuit board is damaged, etc., the driver misuses such as when the parking brake release button is not pressed Starting the train to run, etc., will make the train in the parking brake state, and the parking brake device will apply a braking force to the train, and at this time the train is moving at a certain speed, causing accidents such as wheel rubbing.

Method used

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  • Method and system for preventing applied accidental parking brake on railway train
  • Method and system for preventing applied accidental parking brake on railway train
  • Method and system for preventing applied accidental parking brake on railway train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 , image 3 , Figure 4 As shown, the present invention provides a kind of method that prevents rail train from accidentally applying parking brake, comprises the following steps:

[0033] 1) The local brake control unit 1 collects the speed signal of the train through the speed sensor 11, collects the air pressure signal in the parking brake cylinder 40 through the pressure sensor 12, and collects the parked train line state signal through the parked train line state detection circuit 13;

[0034] 2) The control module 15 internally runs a pre-set program, in which three conditions of speed, pressure and parking train line are set, respectively to determine whether the value V of the speed signal is greater than the preset value V 0 , whether the magnitude P of the pressure signal is less than the preset value P 0 , whether the magnitude S of the state signal of the parked train line is 1, that is, whether the parked train line is in a power-on state...

Embodiment 2

[0039] In above-mentioned step 4) also include:

[0040] 41) The driver operates the manual switch 21, so that the pulse solenoid valve 22 acts to inflate the parking brake cylinder 40, and enters the parking brake relief state.

[0041] If the train starts to run when the parking brake is not released due to the driver's misoperation, the pressure sensor will detect that the air pressure in the parking cylinder is zero, and at this time, the train speed V>V 0 , the parked train line is in the conduction state, and the above three conditions are met, the control module will drive the parked brake train line to disconnect the control circuit action, and the parked train line will be disconnected by controlling the first relay, so that the second relay will be de-energized , disconnect the emergency train line, at this time the emergency exhaust valve is de-energized, so that the train pipe exhausts, drives the emergency braking control device to apply emergency braking, and the...

Embodiment 3

[0043] Such as image 3 As shown, the system for preventing rail trains from accidentally applying parking brakes in the present invention includes a local braking control unit 1 and a parking braking control unit 2, and the local braking control unit 1 includes: a speed sensor 11 for detecting the train running speed; The pressure sensor 12 is used to detect the internal air pressure of the parking brake cylinder 40; the detection circuit 13 for detecting the state of the parked train line is used to detect the state of the parked train line;

[0044] Parking braking train line disconnection control circuit 14 includes a first relay K1 and a second relay K2, the input end of the first relay K1 is connected to the control module 15, the output end of the first relay K1 is connected in series with the input end of the second relay K2 and Parked train line state detection circuit 13, the output end of the second relay K2 is connected to the emergency exhaust valve 10 for control...

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Abstract

The invention discloses a method and a system for preventing applied accidental parking brake on a railway train, and aims at solving the problems of the prior art that the applied accidental parking brake causes wheel rubbing and the like. The system for preventing applied accidental parking brake on the railway train comprises a control module, a speed sensor, a pressure sensor and a parking brake train-line breaking control circuit, wherein the parking brake train-line breaking control circuit consists of a first relay and a second relay, the input end of the first relay is connected with the control module, the output end of the first relay is connected in series with input end of the second relay and a parked train line state detection circuit, the output end of the second relay is connected with an emergent exhaust valve; and the control module is connected with a cab display, and controls the input end of the first relay to act according to the set values of the speed sensor and the pressure sensor and the state of the parked train line state detection circuit. The invention can detect the parking brake state, and prevent the situations that under the condition that a parking brake device is broken or a driver is mistakenly operated and the like, the parking brake is not released and the train is started for running and causes the accidents of wheel rubbing and the like.

Description

technical field [0001] The invention relates to a rail train braking control technology, in particular to a method and system for preventing rail trains from accidentally applying parking brakes by means of real-time monitoring of trains by a local braking control unit. Background technique [0002] At present, in the trains pulled by traditional diesel locomotives with a speed of 160km or less, the braking system is mainly controlled by mechanical equipment and pneumatic equipment, and there is no train parking braking system. When the train is parked, iron shoes are generally used Between the wheel and the track to prevent the car from slipping, it is inconvenient and not safe to use. In the new high-speed EMUs, the parking brake system is equipped. The driver presses the parking application button in the cab, and the braking system will control the pulse solenoid valve in the parking brake control device of each trailer. The action causes the parking brake cylinder to ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22B60T7/12
Inventor 章阳陈伟曹宏发
Owner CHINA RAILWAYS CORPORATION
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