目前,在机械工厂的铸造车间内,由混砂机混制出来的型砂采用多级帶式输送机进行输送。由于带式输送机的爬坡角度最大为20°左右,所以要将地面的型砂(由混砂机放出到地面上带式输送机内)输送到离地面6～8m的造型平台上,要经过多级带式输送机接力式爬坡输送,如图1所示。这种输送方式的缺点是:设备多,造价高;占地面积大,厂房造价高;带式输送机爬 At present, in the foundry of machinery factory, the sand mixed by the sand mixer is transported by multi-stage belt conveyors. As the belt conveyor climbing angle of up to about 20 °, so to the ground sand (from the sand mixer to the ground on the belt conveyor) to the ground from the ground 6 ~ 8m modeling platform to go through Multi-level belt conveyor relay climbing, shown in Figure 1. The shortcomings of this delivery method are: more equipment, high cost; large area, high cost of plant; belt conveyor climb