Deceleration strip

Abstract

The invention discloses a deceleration strip which comprises a deceleration strip body and shear thickening fluid with which the deceleration strip body is filled. A rubber cambered surface similar-S-shaped fluid bed is arranged inside the shear thickening fluid, a plurality of liquid through holes are evenly formed in the rubber cambered surface of the fluid bed, the inner cavity of the deceleration strip body is divided into a first fluid region, a second fluid region, a third fluid region and a fourth fluid region through the S-shaped rubber cambered surface, the four fluid regions bear different collision pressures under different conditions, and during pressure collision, the rubber cambered surface deforms and is compressed in the direction of collision force. The purposes that a driver is effectively reminded to slow down a car through the jolty feeling, and the driver does not feel uncomfortable and wheel hubs are not damaged by excessive jolty feeling caused by rapid passing are achieved.

Description

technical field [0001] The invention relates to the technical field of traffic facilities, in particular to a speed bump. Background technique [0002] Speed ​​bumps should be set up at urban road crossings, schools, entrances to residential quarters, etc., to remind passing vehicles to slow down. Commonly used speed bumps are to make use of the severe bumpy feeling when the vehicle passes quickly, causing the driver's psychological discomfort and forcing the vehicle to slow down. . Commonly used speed bumps are generally made of hard rubber, alternated with yellow and black to attract visual attention, and make the road surface slightly arched to achieve the purpose of vehicle deceleration. Therefore, when the vehicle passes at a low speed, it will still feel the bumpy feeling produced by the hard speed bump, which will make the driver feel uncomfortable. [0003] Chinese patent CN105401537A discloses a settleable speed bump based on non-Newtonian fluid. Specifically, it ...

AI Technical Summary

Problems solved by technology

The above-mentioned deceleration belts have achieved the characteristics of low-speed non-inductive passage and high-speed bumpy passage through the principle of non-Newtonian fluids. However, it has been measured through micro-experiments that when the vehicle passes by quickly, the shear thickening fluid in the above-mentioned deceleration belts will be affected. When the shear rate is high, the characteristic of high viscosity is not ideal. The reason may be that when the vehicle collides at a high speed, the pressure generated by the collision is decomposed at a high speed under the action of the porous structure or the rubber bag, so that the force directly acting on the shear thickening fluid The impact force is reduced, and the viscosity of the shear thickening fluid also appears to be thinner

In this case, if the above-mentioned shear thickening liquid is directly filled in the speed bump body, the vehicle can pass through without any bumpy feeling when driving at low speed. The index increases and becomes a hard solid, and the vehicle instantly produces a strong vertical force, which will cause great damage to the wheel hub of the vehicle. Over time, it will damage the service life of the vehicle

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