crash barrier

Abstract

The invention provides an anti-collision guardrail. A baffle is arranged on upper ends of vertical columns, grooves are formed among the vertical columns and the baffle, a beam is erected between the grooves of two adjacent vertical columns, a first buffer layer is arranged between each beam and the baffle, the beams, the first buffer layer and the baffle are fastened together through first bolts and first nuts, each beam includes a left beam and a right beam, the left beams and the right beams are fastened together through second bolts and second nuts, a spherical groove is formed in the connecting surface of each left beam and the corresponding right beam, openings are formed in the lower ends of the spherical grooves, rotating balls are arranged in the spherical grooves and connected with handrails, the handrail extends from the openings of the lower ends of the spherical grooves, second buffer layers are arranged among the rotating balls and the spherical grooves, third buffer layers wrap the outer sides of the beams, lifting rings are arranged at the lower end of the handrails, a chain is connected between lower portions of two adjacent vertical columns, the length of each chain is larger than the distance between two adjacent vertical columns, and the chains sequentially penetrate the lifting rings. According to the anti-collision guardrail, impact force can be buffered and released, and impact damage to the guardrail to accident vehicles and passengers are reduced.

Description

technical field [0001] The invention relates to the technical field of road guardrails, in particular to an anti-collision guardrail. Background technique [0002] With the continuous development of economic construction, transportation is becoming increasingly busy. Traffic accidents are currently the most frequent occurrences in road sections or highway bridge sections. In order to reduce the occurrence of traffic accidents, various guardrails are installed on both sides of the road. Since the guardrails are made of iron structure and inelastic, rigid guardrails have strong protection ability. However, when a car collides with the guardrails, Under the action of instantaneous impact load, the guardrail basically does not move or deform. The energy absorption during the collision process depends on the plastic deformation of the car itself, the frictional contact between the car and the guardrail, and the car's movement along the barrier. The climbing of the guardrail and...

AI Technical Summary

Problems solved by technology

[0003] The invention proposes an anti-collision guardrail, which solves the problem of impact damage to accident vehicles and passengers caused by the strong rigidity of the guardrail in the prior art

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