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Method for accurately monitoring closure distance between switch rail and base rail of turnout

A base rail and close sticking technology, which is applied to the locking mechanism, measuring device, electromagnetic means and other directions for turnouts, can solve the problems such as the inability to monitor the close distance between the switch tip rail and the base rail, and the inability to provide safety evaluation indicators.

Active Publication Date: 2015-01-14
北京中研国辰测控技术有限公司
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Problems solved by technology

Now in the monitoring of the switch operation, it is usually used to confirm whether the switch is pulled in place by whether there is a switching current. This method has great limitations, and can only judge whether the switch is moved in place, and cannot monitor the point rail and the base rail of the switch. The close-fitting spacing cannot give a safety evaluation index

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  • Method for accurately monitoring closure distance between switch rail and base rail of turnout
  • Method for accurately monitoring closure distance between switch rail and base rail of turnout
  • Method for accurately monitoring closure distance between switch rail and base rail of turnout

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Embodiment Construction

[0019] figure 1 , figure 2 , image 3 In the first embodiment shown, an accurate monitoring method for the distance between the tip rail and the base rail of a switch, the monitoring method includes two processes of initial calibration and actual monitoring,

[0020] The first calibration process is,

[0021] a. Paste and fix a sheet-shaped electromagnetic eddy current detection sensor 1 on the vertical side where the tip of the switch point rail 2 is closely attached to the base rail 3, and the electromagnetic eddy current detection sensor 1 is connected to the electromagnetic eddy current detection instrument through a sensor cable. There are two detection coils in the electromagnetic eddy current detection sensor 1 of shape, and wherein one detection coil is excitation coil 10, and another detection coil is receiving coil 11, and the thickness of electromagnetic eddy current detection sensor 1 is less than the point between switch tip rail 2 and base rail 3. The maximum...

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Abstract

The invention discloses a method for accurately monitoring the closure distance between a switch rail and a base rail of a turnout. Based on the electromagnetic eddy current testing principle, the lift-off effect principle of an electromagnetic eddy current testing sensor in electromagnetic eddy current testing is used, the closure distance between the sharp end of the switch rail and the base of the turnout is monitored through the sheet-shaped electromagnetic eddy current testing sensor, whether the turnout is turned in position or not can be monitored, the closure distance between the sharp end of the switch rail and the base of the turnout can be accurately monitored, and complete safety evaluation indexes for turnout operation can be provided.

Description

Technical field [0001] The invention relates to a non-destructive testing method, in particular to an accurate monitoring method for the distance between a point rail and a base rail of a turnout. Background technique [0002] A turnout is a line connection device that allows rolling stock to transfer from one track to another, and is usually laid in large numbers at stations and marshalling yards. With the turnout, the passing capacity of the line can be fully utilized. Even if it is a single-track railway, the train can be separated by laying a turnout and building a section of fork that is greater than the length of the train. Electric turnout is one of the most important signal equipment, and it is also the most frequently used signal equipment in the station. The failure of electric turnout should be reduced as much as possible, so as not to affect the traffic and improve the operation efficiency of the station. However, some electric turnouts are installed in a bad e...

Claims

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Application Information

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IPC IPC(8): B61L5/10G01B7/14
Inventor 林俊明
Owner 北京中研国辰测控技术有限公司
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