A kind of impact drop weight automatic rebound climbing device for bridge inspection

Abstract

The invention belongs to the technical field of structure monitoring, and relates to an impact drop hammer automatic rebounding and climbing device for bridge detection. The device comprises an upperframe ring, a slideway column, a fixed spiral rail, a drop hammer, a hammer head, a directed sliding rod, a laser sensor, a hammer bearing platform, a bearing platform magnetic pad, a drop hammer lower magnetic pad, a lower frame ring, an on-column magnetic repulsion coil, a magnetic repulsion rod, a spiral rail motor, a slideway column large groove, a slideway column directed groove, a slip spiral rail, a magnetic repulsion coil, a force hammer impact magnetic pad, an impact device base and an impact coil. The impact drop hammer automatic rebounding and climbing device provided by the invention realizes that the drop hammer can automatically rebound and climb to an initial position after impacting and falling, thus, impact force of each time is guaranteed to be consistent, and a rebounding and climbing process is completed in a full-automatic mode.

Description

technical field [0001] The invention belongs to the technical field of structure monitoring, and relates to an automatic rebound climbing device for impact drop weight used for bridge detection. Background technique [0002] In order to ensure the safety of bridges, it is necessary to conduct regular inspections on bridges. One of the inspection contents is to measure the modal parameters of bridges, such as frequency, damping, and mode shape. By comparing these parameters in different periods, the dynamic performance changes of bridge structures can be understood. , so as to find abnormalities and carry out maintenance measures in advance. [0003] The traditional modal parameter detection method is to use the vehicle to drive through the bridge, measure the vibration signal of the bridge when the truck passes through the sensor arranged in advance on the bridge, and identify the modal parameters to obtain the modal parameters. The generated excitation is not stable, and i...

AI Technical Summary

Problems solved by technology

However, this method has certain defects. First, it is difficult to control the artificial hammering force. If it is too large, it will damage the pavement of the bridge deck, and if it is too small, it will not stimulate the modal parameters of the bridge structure. The second problem is that for bridges with slightly larger spans, hammering Multiple points are required, which consumes a lot of manpower, and it is difficult to ensure consistent hammering force every time

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