A kind of anti-fog device

Abstract

The invention discloses a water and fog preventing device. The water and fog preventing device comprises a water and fog preventing assembly, a wind source assembly and a pipeline assembly, wherein the water and fog preventing assembly is mounted at the lower part of a rail flaw detection vehicle, and is mounted at a position where the detection of a centering detection module on rails is not blocked; the wind source assembly is mounted on the rail flaw detection vehicle, and provides a wind source for the water and fog preventing assembly; the pipeline assembly is arranged on the rail flaw detection vehicle, is connected between the water and fog preventing assembly and the wind source assembly, and transmits the wind source generated by the wind source assembly to the water and fog preventing assembly; and the water and fog preventing assembly and the centering detection module are integrally mounted, and water and / or fog influencing the work of the centering detection module are / is eliminated by the water and fog preventing assembly through utilizing the wind source. According to the water and fog preventing device disclosed by the invention, when the rain flaw detection vehicle works in low-temperature environment, the influence on the centering detection module because of the freezing of the water and fog can be effectively prevented; and when the rail flaw detection vehicle works in environment with rain and water, the influence of the water, the fog, as well as the mixture of the water and the fog on the centering detection module is effectively prevented.

Description

technical field [0001] The invention relates to the field of railway engineering operations, in particular to a heatable and anti-fog device applied to railway engineering operations and maintenance vehicles. Background technique [0002] At present, large-scale rail flaw detection vehicles (national railways, subways, etc.) at home and abroad all use ultrasonic detection wheels as the sensing method for detecting internal damage of rails. Due to the shaking of the large-scale rail flaw detection vehicle during operation and the widening of the gauge, it is inevitable to produce lateral displacement deviation between the ultrasonic detection wheel and the rail during the detection process. If this deviation cannot be corrected in time, it will not be possible to ensure that the ultrasonic sound beam is incident on the inside of the rail according to the agreed direction, resulting in that the internal damage of the rail cannot be effectively detected, and thus bring very ser...

AI Technical Summary

Problems solved by technology

[0003] When large-scale rail flaw detection vehicles (national railways, subways, etc.) work in low-temperature environments, the windows of the centering module based on laser sensors will cause condensation of ice on the windows due to low temperature, which seriously reduces the transmittance of the windows, thus There is no guarantee that the module effectively detects the rail position through the window

At the same time, when large-scale rail flaw detection vehicles (national railways, subways, etc.) work in environments with rain and water, the windows of the centering module based on laser sensors will accumulate windows due to water, fog splashes and mixed impurities, while Reduce the transmittance of the viewing window, so that it cannot ensure that the module can effectively detect the position of the rail through the viewing window

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