An automatic detection device and detection method for the interior of a bridge box girder

Abstract

The present invention discloses an automatic detection device and method of a bridge box girder, and relates to the field of the bridge detection. The device is provided with a body platform, and mechanical arms perpendicular to the direction of forward motion are arranged at two sides of a body platform; rotatable manipulator wrists are arranged at one ends of the mechanical arms, and image acquisition devices and lamps are arranged on the manipulator wrists; and the device further comprises a machinery running gear, a sensor, a data storage device and a control system. The detection method comprises the steps: setting the running parameters of an automatic device; setting the motion parameters of stretching the manipulators and the work parameters of the sensor; resetting a mileage encoder; starting an automatic checkout device; and leading out detection data. The automatic detection device and method of a bridge box girder are able to realize the rapid unmanned automatic detection, substitute people's on-site work and improve the detection safety factors so as to realize the standardization of the detection within the box girder and avoid the subjective factor influence brought by manual detection.

Description

technical field [0001] The invention relates to the field of bridge detection, in particular to an automatic detection device and a detection method inside a bridge box girder. Background technique [0002] In the long-span cable-supported bridges that have been built or are under construction in my country, a large proportion of box-shaped structure girders are used. Bridge box girders are generally composed of multiple connected box rooms. Due to the characteristics of the steel box girder itself, its Problems such as surface coating scratches and welding burns are prone to occur in the process of production and installation. At the same time, the natural environment of long-span bridges is relatively harsh, and they are subject to dynamic loads such as vehicle loads and wind loads for a long time, and are prone to corrosion and fatigue damage. The main damages inside the steel box girder include: powdering of the coating film, bubbling of the coating film caused by rust s...

AI Technical Summary

Problems solved by technology

However, manual inspection is subject to many restrictions. For example, the temperature inside the steel box girder in summer in the south may be as high as 50-60°C. It is very dangerous to work manually in such a harsh environment.

At the same time, the internal structure of the steel box girder is inconvenient to walk, some are not equipped with lighting, and some steel box girders have piles of construction waste. Manual inspection is also disturbed by many objective conditions, and is also greatly affected by human subjectivity.

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