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A device and method for monitoring the aging degree of rubber backing plate for rail structure

A technology of rubber backing plate and aging degree, which is applied in the direction of measuring device, measurement of property and force applied to piezoelectric devices, force/torque/power measuring instrument, etc. System complexity and other issues, to achieve the effect of ensuring long-term service, significant piezoelectric effect, and high sensitivity

Active Publication Date: 2019-03-19
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The resistance strain gauge is used to monitor the rubber stiffness performance. The resistance change caused by the general strain of the resistance strain gauge is very small, and an external instrument amplifier is required to amplify the signal. The monitoring system is relatively complicated; in addition, it is not suitable for long-term monitoring because of time drift and temperature drift. Larger, long-term measurement may not be able to obtain real and effective data

Method used

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  • A device and method for monitoring the aging degree of rubber backing plate for rail structure
  • A device and method for monitoring the aging degree of rubber backing plate for rail structure
  • A device and method for monitoring the aging degree of rubber backing plate for rail structure

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Embodiment

[0038] This embodiment uses an experimental method to illustrate the device and method of the present invention.

[0039] Such as figure 2 As shown, the piezoelectric sensor 4 is laid under the rubber pads 3 with different aging degrees, the piezoelectric sensor 4 is connected to the data acquisition and processing system 2 by lead wires, and the data acquisition and processing system 2 is connected to the computer. Use the ball falling device to make the ball drop freely from the same height and position to the rubber backing plate. At the same time, use a high-speed camera to shoot the ball falling and rebounding process, and observe and record the output voltage of the piezoelectric sensor 4 on the computer 1. Signal.

[0040] The piezoelectric sensor 4 adopts a flexible PZT piezoelectric sensor.

[0041] A batch of rubber pads with fixed dimensions is heated at different temperatures and times by using an oven accelerated aging method to prepare a batch of rubber pads w...

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Abstract

The invention discloses a device and a method for monitoring the aging degree of a rubber base plate for a rail structure. The device comprises a monitoring assembly and a signal receiving and processing system, wherein the monitoring assembly is laid below the rubber base plate; the monitoring assembly comprises a piezoelectric sensor; the signal receiving and processing system comprises a data collecting and processing system and a computer, the output end of the piezoelectric sensor is connected with the input end of the data collecting and processing system, and the output end of the data collecting and processing system is connected with the computer through a wireless network. In the process that the rubber base plate for a railway is installed, the flexible piezoelectric sensor is laid below the rubber base plate so as to collect voltage signals converted from instantaneous impact force generated through the rubber base plate when high-speed trains run over, and then the collected voltage signals are transmitted to the computer so as to be processed and compared with electrical signals of non-aging rubber, so that the aging degree of the rubber base plate is accurately monitored on line in real time, and the rubber base plate with high aging degree is replaced in time.

Description

technical field [0001] The invention relates to the technical field of monitoring rubber backing plates, in particular to a monitoring device and method for the aging degree of rubber backing plates. Background technique [0002] The rubber backing plate for railway track structure (hereinafter referred to as "rubber backing plate") is an important part of the track structure. It is installed between the steel rail and the concrete sleeper. Its main function is to buffer the high-speed vibration and impact generated when the vehicle passes the rail. , to protect the roadbed and sleepers. Due to being exposed to the atmosphere for a long time and affected by factors such as temperature, moisture, and ultraviolet rays, the rubber backing plate will inevitably age or even fail, affecting normal service functions. Existing methods for detecting the aging degree of rubber pads are relatively single, usually testing the aging performance of the rubber pads in a laboratory before ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00G01L1/16G01L5/00
CPCG01L1/16G01L5/0052G01N27/00
Inventor 赵国堂蒋金洋耿然然王增梅
Owner SOUTHEAST UNIV
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