Multilayer passive anti-collision and energy-absorption device for highway ramp

Abstract

The invention belongs to the field of safety protection equipment in road engineering construction and particularly relates to a passive anti-collision and energy-absorption device for a highway ramp. The device comprises a column shell structure and a multilayer energy-absorption structure, wherein the column shell structure is formed by an outer-layer anti-collision ring and is filled with the multilayer energy-absorption structure; the multilayer energy-absorption structure comprises multiple gravel filling layers and flexible collision layers which are arranged at intervals; the outer-layer anti-collision ring and a lattice hollow structure are made of flexible materials; and a plurality of fixed grooves are further formed in the bottom of the device. The passive anti-collision and energy-absorption device can be used for dispersing and absorbing an external impact force in an impact process and is relatively high, so that the impact force caused to a vehicle can be effectively reduced in a collision process, the protecting capacity of the vehicle is improved, and the vehicle speed can be decreased in the impact process; and furthermore, the anti-collision and energy-absorption device is independently arranged, only occupies a small area on a pavement, can be automatically fixed depending on the pavement and is very applicable to the anti-collision design of the highway ramp.

Description

technical field [0001] The invention belongs to the field of safety protection equipment in road engineering construction, and in particular relates to a passive anti-collision energy-absorbing device at an expressway ramp. Background technique [0002] In recent years, my country's expressways have been continuously improved and widened, and the expressway network in various places has developed rapidly. While many drivers enjoy a spacious and comfortable driving experience, some drivers get off the expressway and drive to the ramp. Instead, they want to save time and leave the highway faster, which leads to frequent accidents at the ramp. According to statistics, the traffic accidents that take place at the ramp of expressways account for more than 30% of the total accidents every year. Therefore, the anti-collision facilities at the ramp are of great necessity. [0003] At present, there are still very few anti-collision devices specially designed for expressway ramps in ...

AI Technical Summary

Problems solved by technology

It brings a lot of inconvenience to the installation work, and the additional structure will be affected after the impact

[0005] Therefore, there are mainly following defects and deficiencies in the prior art: (1) the height of the main body of the device is too short to effectively protect the safety of the personnel in the front of the car and the front driver's cab; The vehicle hits and flies, and the energy absorption and deceleration effects are poor. (3) The main body of the device is more scattered individuals, which occupy a large road area during installation, which brings inconvenience to normal driving. (4) The rotating shaft device needs to rely on The installation process of the original guardrail is inconvenient and the energy absorption effect is average, and additional devices will be affected after the impact

Images