Counterguard system for small-bias head-on collision of vehicles

Abstract

The invention discloses a counterguard system for small-bias head-on collision of vehicles. The counterguard system comprises a small-bias counterguard (1), two installing supports (A) parallel to each other are welded to the bottom of the small-bias counterguard, each installing support is correspondingly provided with a row of ground anchors (4) laid on a firm foundation, a cylinder (5) matched with an inner cavity of the ground anchor is placed in each ground anchor, each ground anchor corresponds to one first fastening screw (6), and the first fastening screws sequentially penetrate through the installing supports and the cylinders to be locked with the ground anchors from top to bottom. An existing automobile test site is ingeniously improved, the investment cost is low, the project amount is small, the installing mode of horizontally installing the small-bias counterguard on the ground anchors laid on the firm foundation is creatively changed from the installing mode of vertically installing the small-bias counterguard on a fixed rigid wall, secondary collision after vehicle bodies collide is avoided, and the bottleneck that at present, a small-bias collision test can not be performed due to limitation of sites and equipment in China is broken through.

Description

technical field [0001] The invention relates to automobile collision test equipment, in particular to a barrier system for small offset frontal collision, and belongs to the technical field of mechanical structures. Background technique [0002] The vehicle crash test is divided into 100% frontal impact, 40% offset frontal impact, 25% small offset frontal impact, side column impact, front column impact and oblique angle impact, etc. The small offset frontal crash test is another new working condition for testing vehicle safety performance in foreign countries recently. The difference between the small offset frontal impact test and other frontal impact tests is that, when the small offset impact occurs, the longitudinal beam of the vehicle will not be crushed and deformed, and the vehicle body will rotate after the impact. [0003] At present, only the Insurance Institute of the United States (IIHS) in the world can do this kind of crash test, because their test rigid body ...

AI Technical Summary

Problems solved by technology

However, the rigid body walls of the existing automobile test sites in my country are all fixed, such as figure 1 As shown, the small offset barrier 1 is installed vertically on the fixed rigid body wall 9. Due to the limitation of the equipment and the site, the test vehicle can only move forward along the prescribed route (as shown by the dotted line in the figure). In the offset test, after the car body collides with the small offset barrier 1, it will inevitably rotate (as shown by the arrow in the figure), thus causing a second collision with the solid rigid body wall 9, resulting in the damage value and motion state of the dummy in the car Changes, as well as changes in the structure of the car body, do not meet the requirements for small offset collisions

In addition, the area of ​​the crash test is usually limited. If the car body rotates after the collision, it may also hit the surrounding objects or the wall of the building.

[0004] The fixed rigid body wall 9 is composed of cement piers and steel plates. The steel plates are fixed on the surface of the cement piers, and the overall weight reaches hundreds of tons. Whether it is transforming the existing fixed rigid body walls into mobile rigid body walls, or rebuilding new small offset barriers The tests are all facing the same problem: the amount of engineering is huge, the cost of equipment is huge, and it is unrealistic to implement. Therefore, it is currently impossible to conduct effective small-offset crash tests in China, especially for test vehicles such as SUVs.

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