Counter-impact device and highway guardrail provided with device

Abstract

The invention discloses a counter-impact device and a highway guardrail provided with the device, and belongs to the field of buffering devices and road guardrails. According to the counter-impact device, a cylinder body is provided with a cylinder body outer wall and a cylinder body inner wall, one end of a piston is tightly matched with the cylinder body inner wall, a piston shaft shoulder is tightly matched with the cylinder body outer wall, an exhaust mechanism is arranged on the piston, and a piston clamping sleeve is installed at the other end of the piston; a spring used for resetting the piston is arranged between the cylinder body and the piston, and the piston shaft shoulder is pressed into the cylinder body outer wall through a gland to be fastened. According to the highway guardrail, plastic steel tubes serve as guardrail beams to be installed on the counter-impact device, and the counter-impact device is fixed to upright columns to form the guardrail with buffering and energy-absorbing functions. The counter-impact device is good in buffering and energy-absorbing effect and high in impact resistance. The highway guardrail provided with the device can effectively reduce casualty accidents, the plastic steel tubes which are used are good in self-sliding performance and resistant to corrosion, maintenance is easy and the service life is long.

Description

technical field [0001] The invention relates to the technical field of a buffer device and a highway guardrail, and more specifically relates to an anti-impact device and a highway guardrail using the device. Background technique [0002] At present, our country has entered the era of expressways, and expressways have greatly promoted the development of the national economy. In order to ensure driving safety, safety guardrails are installed on both sides of the expressway. Most of the safety guardrails used in our country are composed of columns and rigid corrugated protective plates. When the car loses control and hits the protective plate, this guardrail can prevent the car from falling into the ditch on both sides of the expressway or rushing into the opposite lane. Situation happens. However, practice has proved that the energy absorption effect of the above-mentioned safety guardrail is poor, the strength of the corrugated plate is low, and there is basically no buffe...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of poor buffering effect, low impact resistance and difficult maintenance of highway guardrails in the prior art, and provide a kind of anti-shock device and highway guardrail using the device. The technical scheme of the present invention utilizes The characteristics of the anti-impact cylinder itself can return the impact force to offset, and the buffering effect is obvious. The guardrail beam has self-slip property, which can effectively reduce the occurrence of casualties, and the guardrail beam made of plastic steel pipe does not need to be painted and maintained, and has a long service life.

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