Steel framed bridge for small river and capable of achieving flood discharge and water drainage conveniently

Abstract

The invention discloses a steel framed bridge for a small river and capable of achieving flood discharge and water drainage conveniently. The steel framed bridge comprises a machine body. A detectionplate is fixedly arranged on the bottom face of the machine body. A detection space is arranged in the detection plate. A limiting sliding cavity is formed in the top side of the detection space. A working cavity is formed in the machine body. Detectors for detecting the magnitude of water flow are arranged in the detection space and the limiting sliding cavity. When water flow is too large, a blade, a cross shaft and a sector gear are driven to rotate fast, and the sector gear meshes with a lifting plate and can drive the lifting plate to move up. The steel framed bridge can be fixedly installed in land on both sides of the river, and people in a village can go in and out conveniently. When a flash flood occurs and water flow is too large, a turbine can be started to drain off water actively, thus impact of the water flow to the surface of a bridge body is reduced, and safety of the bridge is protected.

Description

technical field [0001] The invention relates to the field of bridges, in particular to a steel frame bridge used in small rivers to facilitate flood and water discharge. Background technique [0002] An arched bridge is usually erected on a small river in some villages. Now some arched bridges generally use a steel frame as the inner core first, and then build an arched bridge on the surface of the steel frame to facilitate the people in the village. Going out and entering can also ensure the strength of the bridge, because the small rivers in the village are generally formed by the collection of mountain springs. During the rainy season, the water volume will increase significantly. When some mountain torrents occur, the water volume will instantly change. It is very large, and the steel frame bridge may not be able to support the outbreak of mountain torrents. Therefore, it is necessary to design a bridge that can actively discharge floods. Because of the outbreak of mount...

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Problems solved by technology

[0002] An arched bridge is usually erected on a small river in some villages. Now some arched bridges generally use a steel frame as the inner core first, and then build an arched bridge on the surface of the steel frame to facilitate the people in the village. Going out and entering can also ensure the strength of the bridge, because the small rivers in the village are generally formed by the collection of mountain springs. During the rainy season, the water volume will increase significantly. When some mountain torrents occur, the water volume will instantly change. It is very large, and the steel frame bridge may not be able to support the outbreak of mountain torrents, so it is very necessary to design a bridge that can actively discharge floods. Because of the outbreak of mountain torrents, the bridge needs to automatically start the active flood discharge and automatically close the flood discharge

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