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一、问题的提出:在公路路基的施工中,通常有大量的土石方需要用挖掘机与自卸汽车来挖掘运输,而挖掘机与自卸汽车的合理配比是经济而迅速地完成挖掘运输任务的前提。如果机械配比不合理不但不能经济地完成挖掘运输任务,而且使挖掘运输工作不能以一个比较稳定的速度进行。因此,研究挖掘机与自卸汽车的合理配比,是一个很重要的问题。合理的机械配比应使“挖掘—运输”系统既能以一个较稳定的速度工作,又能使系统的费用最低。所谓较稳定的速度是说机械工作时
First, the issue raised: In the construction of highway subgrade, usually a large number of earth and rock need to use excavators and dump trucks to dig the transport, excavators and dump trucks reasonable ratio is the economic and rapid completion of the mining and transportation tasks The premise. If the ratio of machinery is not reasonable not only can not economically complete the task of mining and transportation, but also to excavation and transport work can not be carried out at a relatively stable rate. Therefore, studying the reasonable mix of excavators and dump trucks is a very important issue. Reasonable mechanical ratio should make “dig - transport” system can not only work at a more stable rate, but also make the system the lowest cost. The so-called more stable speed is that when working machinery