Bridge height-limitation device convenient to adjust

Abstract

The invention discloses a bridge height-limitation device convenient to adjust. The bridge height-limitation device comprises stanchions, fixing devices are arranged at the lower ends of the stanchions, gear shafts are arranged at the upper ends of the stanchions, supporting columns are arranged at the upper portions of the gear shafts, cavities with openings formed in the lower ends are formed inside the supporting columns, the upper ends of the gear shafts are arranged in the cavities, worm wheels matched with the gear shafts are arranged on the outer sides of the supporting columns, worms matched with the worm wheels are arranged on the lower sides of the worm wheels, grooves are formed in the upper sides of supporting frames, sliding grooves are formed in the grooves, sliding blocks are arranged on the sliding grooves, damping devices are arranged between the sliding blocks and the grooves and comprise supporting cylinders and stretchable cylinders, sliding cavities are formed in the cylinder walls of the stretchable cylinders, the upper ends of the supporting cylinders are arranged in the sliding cavities, stanchions are arranged at the lower ends inside the supporting cylinders, stretchable rods are arranged at the upper ends of the stanchions, and damping springs are arranged on the outer sides of the stanchions and the stretchable rods. The bridge height-limitation device is simple in structure and convenient to use, the height is convenient to adjust, the buffering effect is good, and safety is high.

Description

technical field [0001] The invention relates to the technical field of height limiting devices, in particular to a bridge height limiting device with convenient adjustment. Background technique [0002] A bridge (bridge) refers to a building built for roads to cross natural or artificial obstacles. It is erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. A bridge generally consists of a superstructure, a substructure and ancillary structures. The superstructure mainly refers to the bridge span structure and support system; the substructure includes abutments, piers and foundations; , diversion engineering, etc. According to the structural system of bridges, there are four basic systems: girder bridge, arch bridge, rigid frame bridge, and suspension cable load-bearing (suspension bridge, cable-stayed bridge). [0003] Bridge height limit is the main measure to restrict large vehicles from passing through important bridge sections. Every ye...

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Problems solved by technology

[0003] Bridge height limit is the main measure to restrict large vehicles from passing through important bridge sections. Every year, important bridges are crushed due to unrestricted large vehicles, and then a lot of money is spent on maintaining bridges, which affects traffic.

Most of the existing bridge viaducts have fixed height-limited beam heights, which restrict the passage of large vehicles and also hinder special vehicles in special periods, such as fire trucks and sprinklers, which cannot be flexibly controlled. In addition, existing bridge viaducts often Will be knocked down by a car, resulting in injury to passers-by, damage to the vehicle, endangering the safety of people's lives and property

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