本起重机有两台小车，两小车可以同时使用，也可以单独使用，适用于厂矿企业的车间或露天仓库吊运长件材料(木材，纸筒，管封，棒材)。
Double—trolley Bridge Crane
With two trolleys that works simultaneously or separately，this crane is suitable to lift long materials(wood，paper tube，pipe and bar)in workshops or outdoor stores in factories and mines．
注： 1．大车导电有角钢和安全滑触线两种形式，供选择。
2．操纵形式有室操(分开式和闭式)，地操和遥控三种，供选择。
Notes：
1．Power supply for the main vehicle can be either through angle steel or safety slide wire．
2．Operation can be done in the cabin(open-type and closed-type)，on the ground or through remote control.
