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Real-time online monitoring system for wear conditions of brake pads of motor train unit

A technology for monitoring the wear and tear of the system, applied in the direction of brake safety systems, brake components, brakes, etc., can solve problems such as brake failure, car crash and death

Active Publication Date: 2018-04-10
CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wear of the brake pads of the EMU cannot be grasped during the operation process. If the brake pads are worn out and continue to be used, the brakes will fail at high speeds, and even serious consequences of car crashes and fatalities will occur.

Method used

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  • Real-time online monitoring system for wear conditions of brake pads of motor train unit
  • Real-time online monitoring system for wear conditions of brake pads of motor train unit
  • Real-time online monitoring system for wear conditions of brake pads of motor train unit

Examples

Experimental program
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Effect test

Embodiment 1

[0062] see Figure 4 , the present invention discloses a real-time on-line monitoring system for brake pad wear of EMUs. The monitoring system includes: several displacement sensors D, several spoke / axle front-end machines C, several EMU carriage monitoring extensions B, and EMU monitoring hosts a.

[0063] The EMU monitoring host A is connected to each EMU carriage monitoring extension B, the EMU carriage monitoring extension B is connected to the corresponding spoke / shaft front-end unit C, and the spoke / shaft front-end unit C is connected to the corresponding displacement sensor D.

[0064] One distance measuring sensor is installed on the left and right sides of each wheel disc brake and axle disc brake caliper. When the EMU implements air braking, the distance sensor installed on the brake caliper and the The brake disc is close, and the distance between the brake caliper and the brake disc is measured. The thickness of the brake pad is 35mm when it is not worn, and the w...

Embodiment 2

[0072] A real-time on-line monitoring system for brake pad wear of an EMU, the monitoring system comprising: several displacement sensors, several spoke / axle front-end units, several EMU carriage monitoring extensions, and an EMU monitoring host.

[0073] One distance measuring sensor is installed on the left and right sides of each wheel disc brake and axle disc brake caliper. When the EMU implements air braking, the distance sensor installed on the brake caliper and the The brake disc is approached, and the distance between the brake caliper and the brake disc is measured.

[0074] The travel distance measured by the eddy current sensor installed on the brake caliper is compared with the distance of the new brake pads. When it is greater than the set value, the monitoring system will alarm and prompt the driver and maintenance personnel to replace the worn brake pads in time.

Embodiment 3

[0076] The EMU brake adopts disc brakes, also known as friction disc brakes. One is to install brake discs on the axle, and the other is to install brake discs on the spokes of the wheels. Generally, it is a cast iron disc or a steel disc. The two brake pads made of synthetic materials are pressed tightly against the side of the brake disc with a brake caliper. The braking force is generated through friction, and the kinetic energy of the train is converted into heat energy, which is dissipated in the atmosphere. The structure of the EMU brake machine is as follows: figure 1 As shown, wherein 101 is a brake cylinder, 102 is a pull ring, 103 is a horizontal lever, 104 is a relief spring, 105 is a brake pad, 106 is a brake disc, 107 is an intermediate pull rod, 108 is a horizontal lever pull rod, and 109 is a rotation arm.

[0077] The brake mode of the EMU is: two sets of wheel-disc brake devices for each axle of the power car (see figure 2 ), EMU trailer three sets of axle ...

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Abstract

The invention discloses a real-time online monitoring system for the wear conditions of brake pads of a motor train unit. The real-time online monitoring system comprises a plurality of displacement sensors, a plurality of spokes / shaft front-end machines, a plurality of motor train unit carriage monitoring extensions and a motor train unit monitoring host; the motor train unit monitoring host is connected with each motor train unit carriage monitoring extension, the motor train unit carriage monitoring extensions are connected with the corresponding spokes / shaft front-end machines, and the spoke / shaft front-end machines are connected with the corresponding displacement sensors; the left side and the right side of each wheel disc type disc brake caliper is each provided with a distance measuring sensor, the left side and the right side of each shaft disc type disc brake caliper are each provided with a distance measuring sensor, when air braking is carried out on a motor train unit, thedistance measuring sensors installed on the brake calipers are close to brake discs, and the distance between the each brake caliper and the corresponding brake disc is measured; and eddy current sensors installed on the brake calipers are used for measuring the travel distance to be compared with the distance of a new brake pad, when the travel distance is larger than a set value, the monitoringsystem gives an alarm. The wear conditions of the brake pads of the motor train unit can be monitored online in real time so that the safety of trains of the motor train unit can be ensured, and thepersonal and property safety of passengers can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of train brake pad monitoring, and relates to a train brake pad monitoring system, in particular to a real-time on-line monitoring system for brake pad wear of an EMU. Background technique [0002] At present, with the speed-up of main lines of my country's railway network and the development of high-speed, passenger-dedicated lines and heavy-duty railways, the speed of EMUs has reached 350km / h. Because high-speed railways bring great convenience to passengers, they occupy an important position in the passenger transport of the whole road. The proportion of EMUs is increasing, more and more EMUs are running, and the safety of high-speed EMUs is becoming more and more important. The maintenance of railway line equipment has become a key issue in transportation production organization and traffic safety, and it is far from meeting the relevant requirements. The braking device of the EMU is an important device ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D66/02B60T17/22
CPCF16D66/022B60T17/228
Inventor 万宝华庄弘徐红阳赵麟杰张长生张健丰华桂东贺兵强周懿宋培城
Owner CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP
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