直得目前,大中型落砂机还没有一个合理而确切的理论计算方法。运用现有国内外所见到的各种计算公式,其计算结果都与落砂机的实际工作参数出入极大,以至设计时不能被采用。随着重型铸造车间的发展,对大中型铸件的落砂和清理的机械化、自动化要求越来越高。然而,现有大中型落砂机在很大程度上是不能 Straight now, large and medium-sized sand machine does not have a reasonable and accurate theoretical calculation. Using the existing calculation formulas seen both at home and abroad, the calculation results are greatly different from the actual working parameters of the falling sand machine, and can not be used in design. With the development of heavy-duty foundry, the requirements of mechanization and automation of falling and cleaning of large and medium-sized castings are getting higher and higher. However, the existing large and medium-sized sand blasting machine to a large extent can not