Expressway guardrail

Abstract

The invention discloses an expressway guardrail. The expressway guardrail comprises a square tube fixed on an upright post, a mounting groove, two rotating cavities and a connecting groove are formedon the stand column, and the rotating cavities and the connecting groove both communicate with the mounting groove. A first rotating shaft is rotatably connected between the two rotating cavities, animpact plate fixedly sleeving the first rotating shaft and is located in the mounting groove, a plurality of first springs are fixedly mounted between the mounting groove and the impact plate, and a push rod abuts against the side, close to the first springs, of the impact plate. The guardrail has the advantages that the impact plate is arranged rotatably, so that the horizontal thrust can be generated on the push rod during impact, the operation of the subsequent vibration reduction operation is facilitated, the borne impact force is better reduced, and meanwhile when the impact force does not cause the overall deformation and cannot be used, the guardrail can also repeatedly play a role in buffering and reducing the vibration.

Description

technical field [0001] The invention relates to a highway guardrail, in particular to a highway guardrail. Background technique [0002] After retrieval, the patent No. CN107524107B Chinese Invention Authorization Document discloses a highway guardrail, including a column and a guardrail. A side tube is horizontally arranged on the side of the column away from the guardrail, and a push rod runs through the guardrail in turn. Stretch in the square tube behind with column. [0003] There are also the following deficiencies in this highway guardrail: [0004] 1. The first baffle, the second baffle, and the third baffle all run through the square tube vertically. When the first push block breaks through the first baffle, the second baffle moves down to block the second push block. When the second push block breaks through the second baffle, the third baffle moves down to block the third push block; taking the first push to break through the first baffle as an example, the brea...

AI Technical Summary

Problems solved by technology

[0004] 1. The first baffle, the second baffle, and the third baffle all run through the square tube vertically. When the first push block breaks through the first baffle, the second baffle moves down to block the second push block. When the second push block breaks through the second baffle, the third baffle moves down to block the third push block; taking the first push to break through the first baffle as an example, the breakthrough will make the first push block and At least one of the first baffles is bent or broken, and no matter which part is bent or broken, this part cannot be used again, which also shows that the first spring cannot perform the expected reset when the impact force is slightly larger Effect

[0005] 2. If the impact makes the push rod tilt, the above-mentioned vibration reduction cannot achieve the expected effect, so that the impact directly affects the column, but the column is hollow, and the ability to withstand impact is weak. If the impact force is too large, it is easy to make the column Fracture occurs, thus no interception effect

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