Tunnel lining detection support with height and angle capable of being automatically adjusted

Abstract

The invention discloses a tunnel lining detection support with a height and an angle capable of being automatically adjusted, which comprises a radar bracket, wherein the axle center position of the lower side of the radar bracket is provided with a main support rod, one end of the main support rod is connected with the radar bracket through a universal joint, the other end of the main support rod is arranged on a fixed base through a universal joint, the downside of the main support rod is fixed on the fixed base through at least three air struts uniformly distributed around the main support rod, the two ends of the air struts are respectively connected with the main support rod and the fixed base through universal joints, the upside of the main support rod is connected with the radar bracket through at least three spring support rods uniformly distributed around the main support rod, and the two ends of the spring support rods are respectively connected with the bottom of the radar bracket and the main support rod through universal joints. The tunnel lining detection support disclosed by the invention is simple in structure, easy to disassemble, and convenient to carry; the tunnel lining detection support can guarantee that a preset distance is always kept between a radar antenna and a tunnel lining surface in the horizontal and vertical directions; and due to the automatic height and angle adjustment function, the influence of road unevenness on detecting results is reduced, the erection of temporary operating supports and the manual lifting are avoided, the working intensity of detection is lowered, and the detection speed is improved.

Description

technical field [0001] The invention relates to a tunnel lining detection bracket whose height and angle can be automatically adjusted. Background technique [0002] During the construction process, completion quality acceptance and daily maintenance of highway, railway and urban subway tunnels, the quality of the tunnel lining needs to be inspected. Usually, ground radar is used for inspection. During the inspection, the radar antenna is kept close to the tunnel lining or kept Travel along a certain route at a certain distance, and judge the quality of the tunnel lining by analyzing the collected electromagnetic scanning waves. During the detection process, it is usually necessary to test the three lines of the vault and the left and right arch waists. How to ensure that the radar antenna is always close to the tunnel lining or keep a certain distance between them is the key to the success of the detection, and the radar antenna is required to be able to perform different m...

AI Technical Summary

Problems solved by technology

[0003] When testing the quality of the initial lining of the tunnel, the road surface in the tunnel is usually uneven, causing the radar antenna to often detach from the lining surface, which affects the test results; if the distance from the road surface to the vault is too large, it is usually necessary to set up a working support on the mobile testing platform , the staff conduct detection on the support, the safety cannot be guaranteed, and the swing of the support will affect the detection results; the detection is carried out with a hand-held radar antenna, the workload is heavy, and it is difficult to ensure that the radar surface and the tunnel lining are always tight when working for a long time paste

[0004] For this reason, the patent (CN101846639A) invented a movable tunnel detection arm, which can be automatically adjusted according to the tunnel detection surface, and at the same time can be rotated in the opposite direction as required, so that the detection efficiency of the tunnel lining quality is greatly improved, but the use of this device During the initial lining quality inspection, due to the limited degree of automatic adjustment of the longitudinal damping direction joint to the height change, when the road surface is seriously uneven, the bracket rollers on which the radar antenna is placed may be separated from the tunnel lining surface, thereby affecting the inspection results, and vertical and horizontal rotation is used. The adjustment of the driving device is not allowed in time; in addition, when there is a certain angle between the traveling route of the mobile platform and the detection line of the arch waist, it is difficult to ensure that the rollers are always in close contact with the lining surface to adjust the radar bracket by only using the two-position damping steering joint

Therefore, the existing equipment or methods are difficult to realize the high efficiency and automation of tunnel lining quality inspection, and it is necessary to develop an auxiliary equipment for tunnel lining quality inspection with better performance.

Images