Plastic guardrail

Abstract

The present invention relates to a plastic guardrail made of a synthetic resin material and fixed to a vertical post in a transverse direction. The guardrail of the present invention comprises: an outer structure having a plurality of inward-oriented first ribs; an inner structure having fitting grooves formed between a plurality of outward-oriented second ribs such that the first ribs can be fitted and inserted therein; and an intermediate layer for connecting end portions of the first and second ribs to be cornerwise to each other such that the end portion of the first ribs is positioned atthe entrance of the fitting grooves when the inner and outer structures face each other. In the structure, when an impact is applied to the outer structure, the intermediate layer is cut off and relieves impact while the first ribs are forcibly inserted into the fitting grooves.

Description

technical field [0001] The present invention relates to a guardrail for protection mainly installed on the side of a vehicle traffic road, and in particular, to a plastic molded guardrail designed to be effective against external impact. Background technique [0002] In general, a guardrail is a road facility that is installed along the side of the road to mark the boundaries of the road and prevent vehicles from leaving. This guardrail requires high impact strength to prevent the vehicle from breaking away in the event of a collision. At the same time, it is also required to have the characteristics of being able to absorb the impact applied to the vehicle and the guardrail. This requirement is mainly to provide protection for the driver and passengers. [0003] Traditionally, guardrails have been stamped and machined sheet metal in a continuous curved configuration, fixed in a continuous configuration to appropriate posts along the roadside. However, such metal guardrails...

AI Technical Summary

Problems solved by technology

[0008] First, the internal structure of the guardrail including the air layer and ribs is limited to the shape, and cannot actively respond to external impacts

Therefore, when the guardrail is subjected to external impact, each layer is easily damaged in turn, and in this process, the internal structure and shape cannot play any active role in buffering and alleviating.

Thus, although the air layer and ribs provide the cushioning properties of the guardrail, the effect is very minimal

[0009] Second, as mentioned above, when the guardrail of this structure is subjected to external impact, the layers are easily damaged in turn

In this case, the plastic fragments of the damaged guardrail will be scattered in all directions and fly away, which is easy to cause the 2nd and 3rd additional damage

Therefore, in reality, while there is an urgent need for structural improvements to ensure that the impacted guardrails are as free from debris as possible, no countermeasures for this problem have been considered at all

Images