Safe long and large downhill road section and vehicle cooling method

Abstract

The invention discloses a safe long and large downhill road section which comprises an upward convex road section and a common road section alternately arranged. The common road section is a linear road section or a downward concave road section; a deceleration strip-shaped road surface coating is arranged on the downhill road surface in front of the inflection boundary of the rapid and slow roadsection; a handrail is arranged on the right side in front of therapid and slow road sectioninflection boundary; the handrail comprises a cross bar, the cross rod is supported on the ground through aplurality of vertical rods; first color layers and second color layers are alternately arranged on the side walls of the vertical rods in the vertical direction, the first color layers and the secondcolor layers are formed by spraying pigments of different colors, and the total number of the first color layers and the second color layers on each set of vertical rods is sequentially reduced from back to front till the total number of the first color layers and the second color layers on each vertical rod is reduced to two. The invention provides an air injection system for cooling the vehiclebrake. The invention further discloses a corresponding vehicle cooling method. The driving safety can be improved through air injection cooling and active utilization of the visual effect, water resources are not consumed, and environmental protection is facilitated.

Description

technical field [0001] The invention relates to the technical field of road safety, in particular to long and long downhill road sections. Background technique [0002] The "Technical Standards for Highway Engineering" pointed out that long and large longitudinal slopes are very unfavorable to the driving of trucks. Downhill will cause overheating of the brakes, weaken the braking efficiency, and cause traffic accidents. Changing the long downhill road section into a spiral road section can reduce the slope and improve road safety. However, due to terrain constraints, many road sections in mountainous roads can only be built with long downhill slopes. The long downhill section has a top section, a middle section and a bottom section. Statistics show that 63% of the accidents occurred at the bottom of the slope. This is due to the continuous braking and heat generation through the top and middle of the slope, and the braking of vehicles at the bottom of the slope is more li...

AI Technical Summary

Problems solved by technology

[0009] Some scholars have shown that it is better to keep the temperature of the brake (wheel brake drum) within 200°C, at least 300°C; if the temperature of the brake drum exceeds 200°C, the dangerous working condition of thermal decay is likely to occur (see Zhou Ronggui, Xu Jianwei In the article "Study on Control Indication of Longitudinal Section of Highway Continuous Downhill Section", brake failure is more likely to occur when the temperature exceeds 300°C

[0010] During the braking process, the temperature rise of the brake is continuous, so if the brake temperature is too high to cool down, the temperature cannot be lowered quickly, and relatively speaking, it will lead to greater safety risks

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