Tunnel geological radar detection ladder car improvement device

Abstract

The invention relates to a nondestructive detection device for a railway tunnel arch lining ground radar by use of a tower wagon, in particular to a nondestructive detection device for a ground radar at the arch lining of the tunnels of an electric railway and a passenger transport line. The nondestructive detection device can rapidly, safely and reliably achieve tunnel ground radar detection in a high-efficiency manner; the nondestructive detection device and an antenna are closely attached to the surface of the tunnel lining, so that high-quality radar detection data can be acquired; the nondestructive detection device comprises a fixing part transversely arranged on a tower wagon frame, and fixing pipes longitudinally arranged at two ends of the fixing part, wherein the fixing pipes are matched with a lifting control device and an antenna, the antenna and the lifting control device are connected together, and the lifting control device controls the antenna to be ascended or descended.

Description

technical field [0001] The invention relates to a geological radar non-destructive detection device for the arch lining of a railway tunnel by using a ladder car, in particular to a geological radar non-destructive detection device for an electrified railway and a tunnel arch lining of a passenger dedicated line. Background technique [0002] As we all know, the non-destructive testing of the tunnel lining by geological radar (hereinafter referred to as radar testing) can detect: the thickness of the second lining of the tunnel, the density of the backfill behind the second lining and the condition of voids, the steel bars in the second lining and the condition of the arch behind it. Tunnel lining diseases are concentrated in the tunnel arch, and the main vault is the most serious. [0003] At present, one of the following two platforms is usually used for radar detection of railway tunnel arch lining. [0004] 1. Rail car: For the radar detection of the arch lining of the ...

AI Technical Summary

Problems solved by technology

For a single-hole double-track tunnel, since the top working platform is not allowed to deflect during the operation of the rail car, the front vault where the tunnel lining has the most serious damage cannot be detected

For passenger dedicated lines, catenary suspension columns are long, and the radar detection of the tunnel arch lining of some passenger dedicated lines has proved that the rail car platform is not qualified for the tunnel radar detection operation of passenger dedicated lines; since this platform is put into rail cars, the cost is relatively high; In short, the use of rail vehicle platforms requires high-altitude operations, detection blind spots, low data quality, high cost, and inability to perform radar detection operations for tunnel arch linings on passenger dedicated lines.

[0005] 2. Railway ladder car: personnel climb into the frame above the ladder car, and two people hold an antenna close to the lining of the tunnel arch. This method requires personnel to work at heights and is less safe

When detecting the arch waist of the tunnel, it is necessary to lift the antenna obliquely. Under the action of the torque, it is very difficult to lift the antenna, and it is easy to get tired. The antenna is often not attached to the surface of the tunnel lining during detection, but away from the lining. Therefore, the collected radar detection data The quality is poor, or even invalid; for the railways that have been opened and operated, the skylight can only be used for radar detection operations, and the skylight generally only lasts for 60 to 120 minutes. During the detection operation of electrified railway tunnels, the antenna is lowered and lifted at the catenary davit at a slow speed , low efficiency, very little work can be done in one skylight

This method is not suitable for the radar inspection of the front vault of the passenger dedicated line tunnel

In short, personnel go to the frame to conduct radar detection of the tunnel arch: there are great safety hazards, the quality of the collected radar data is not high, labor intensity is high, the efficiency is low, and the main arch of the passenger dedicated line cannot be detected

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