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济南一拖拉机轮胎充气时发生爆炸 2人被崩1死1伤

2017-07-01 18:55:17   山东商报 

汽车轮胎的威力究竟有多大?蔡建国称,不次于济南泉城广场喷泉的压力。“我们曾经做过实验,一个直径5公分的主喷口,能把站在旁边的三五个成年人顶起来。”

蔡建国计算出,正常小轿车的标准大气压为2至2.5左右,大货车就能达到13个左右。大货车轮胎如果发生爆炸,至少会出现边长10公分的裂口,这个裂口则会释放出300千克的爆发力,相当于四五个正常体重的成年人砸向一名成年人。

怎样远离轮胎爆炸?

大货轮胎安全距离要15米以上

在这种强大的爆炸力下,要与轮胎距离多远才能免遭伤害?蔡建国告诉记者,安全距离是根据体积变大、压强变小的原理计算出来的。“大车轮胎的话,至少要15米或15米以上,才算相对安全。”他说,小型汽车也要5米以上的距离。

定期检查胎压和轮胎磨损

蔡建国称,要从源头避免此类情况发生,必须定期检查轮胎,包括磨损程度和胎压状况。尤其是到了夏季,轮胎的气要适当放一些。”如果轮胎的气压过高,则轮胎胎面中央的花纹就会较两边的花纹磨损严重,而且当轮胎气压过高时,轮胎与地面的接触面积小,汽车加速行驶,离开地面的一部分轮胎,再回到地面就会因加速产生变形,从而呈现波动现象。这样行驶时不仅轮胎阻力增加,影响汽车加速性能,而且会导致方向盘震动、跑偏。在气压过足,当遇到路面的钉子、玻璃等尖锐物体时,很容易扎入胎内。

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