为解决建材工业对砂石生产设备的需要,我公司于1981年研制成功了S100_2~1型自行式砂石筛分机,并在砂石场先后进行了近1000小时的工业性试验,完成了七万立米的四种规格砂石量,效果良好。该筛分机适用于年产量为15～24万立米的大中型砂石场,可在接地比压大干0.3kgf/cm~2的砂石、河床及软土层地面上进行砂石开采、筛分工作。其生产能力为100m~3/h,与其配套的设备可选用W100_2~1挖掘机、W50_2~1挖掘机或用皮带机进行上料。该机筛分的砂石,共有四种规格:小于5mm砂子;5～20mm小石子; In order to solve the building materials industry’s need for gravel production equipment, our company successfully developed the S100_2~1 self-propelled gravel screening machine in 1981, and carried out nearly 1,000 hours of industrial tests at the gravel field successively, completing seven Millimeter’s four specifications of gravel, the effect is good. The screening machine is suitable for large- and medium-sized gravel yards with an annual output of 1,500 to 240,000 cubic meters. It can gravelly grind and sieve at gravel, riverbed and soft soil grounds with ground pressure ratios of 0.3kgf/cm~2. Points of work. Its production capacity is 100m~3/h, and its supporting equipment can use W100_2~1 excavator, W50_2~1 excavator or belt conveyor for feeding. There are four kinds of sand and gravel for the screening of the machine: less than 5mm sand, 5~20mm gravel;