Inspection device and inspection method for truss bridges

Abstract

The invention provides an inspecting apparatus for a truss bridge. The inspecting apparatus for the truss bridge comprises an inspecting vehicle, a running mechanism, a rotating suspension arm and a node-crossing piece, wherein the inspecting vehicle comprises a horizontal truss and a vertical truss which is used for an inspecting personnel to inspect a passage in the side surface of the bridge; the running mechanism is used for driving the inspecting vehicle to move in a longitudinal direction; the horizontal truss is fixedly placed on the running mechanism; the rotating suspension arm is arranged on the side surface of the horizontal truss; the rotating suspension arm is in the vertical direction when being in a non-working state; the rotating suspension arm is in the horizontal direction when being in a working state; and the node-crossing piece is arranged at a node of the truss bridge and used for the inspecting vehicle to pass through the node, wherein the node-crossing piece canbe taken off or placed when the rotating suspension arm is in the working state. The invention further provides an inspecting method for the truss bridge; and by using the inspecting device, the truss bridge is inspected.

Description

Technical field[0001]The invention relates to a bridge inspection device, in particular to an inspection device for a truss bridge. The invention also relates to an inspection method for truss bridges.Background technique[0002]At present, steel truss bridges are widely used in bridge construction. During the application of steel truss bridges, regular inspections and maintenance are required. Because the steel truss beam is mainly composed of rods, the connections between the rods are mostly connected by gusset plates and bolts. In the process of inspection and maintenance, in order to cross the gusset plate, the prior art adopts a method in which a pedestal is used to raise the track foundation at intervals on the top of the upper chord of the steel truss beam and then the track is placed on the pedestal. Or use the longitudinal bridge direction to weld the connecting parts on the top chord of the steel truss beam at intervals, and then set a shorter walking beam under the inspecti...

AI Technical Summary

Problems solved by technology

[0003] However, there are still some problems with the above way of setting the track for steel truss bridges

For example, tracks, pedestals and their fixings need to be laid on top of the full bridge, which leads to long construction period and high cost

In addition, although the method of only welding the connectors does not require the laying of tracks for the whole bridge, the walking process is cumbersome and the speed is slow. Because of its few fixed points, as long as there is a problem with one fulcrum during the movement, it may lead to catastrophic consequences. Its stability is poor , poor safety performance, and low inspection and maintenance efficiency

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