Stress concentration released energy-saving and environmentally-friendly expressway guard rail

Abstract

The invention relates to the technical field of expressway guard rails, and discloses a stress concentration released energy-saving and environmentally-friendly expressway guard rail. The stress concentration released energy-saving and environmentally-friendly expressway guard rail comprises a shell, wherein the interior of the shell is fixedly connected with a hollow passage; connecting rods arehinged to the surface of the hollow passage; the upper ends of the connecting rods are movably connected with the roof of the shell through air-blowing ports; the lower ends of the connecting rods areeach movably connected with buffer layers; the adjacent connecting rods are movably connected through a pulling mechanism; the pulling mechanism comprises an extrusion rod, and grooves are formed intwo sides of the extrusion rod. Through the pulling mechanism, in an nonimpacted area a limiting rod can get away from the grooves to be out of a limiting role due to the influence of tensile force inan impacted area, and the extrusion rod gets close to the buffer layers under the driving of a compression spring, so that the swinging angle of the buffer layers is adjusted, guiding and cushioningeffects are achieved for vehicles, and meanwhile, the limiting rod is stretched, the length of the guard rail is enlarged indirectly, and the effect that the length of the guard rail is stretched to protect the vehicle from dropping off is reached.

Description

technical field [0001] The invention relates to the technical field of expressway guardrails, in particular to a stress concentration release energy-saving and environment-friendly expressway guardrail. Background technique [0002] Highway, especially expressway, has already determined its important position in the national economy because of its high speed, high efficiency, safety, comfort and other characteristics. The development of the automobile industry and the construction of high-grade highways have created the necessary vehicles and infrastructure for fast and convenient transportation, improved people's quality of life, and even greatly changed people's way of life. However, with the development of automobiles and road construction, people have to face increasingly serious environmental and road traffic safety problems. [0003] Guardrails have become an essential safety facility for highways, but traditional guardrails basically do not move or deform under the a...

AI Technical Summary

Problems solved by technology

[0003] Guardrails have become an essential safety facility for highways, but traditional guardrails basically do not move or deform under the action of instantaneous impact loads. The energy absorbed during the collision process depends on the plastic deformation of the car itself and the impact of the car on the other hand. Frictional contact with the guardrail; these behaviors are not effective in reducing the impact damage of the accident vehicle and occupants, especially in some mountain road curves, because the guardrail cannot stretch and absorb the impact, the vehicle often rushes down the cliff, not only It will cause the tragedy of car crash and death, and it will also cause the fragments of the guardrail to fall off the cliff, and the material of the guardrail is non-degradable material, which will cause certain pollution to the environment.

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