Stable performance, cargo volume oversized, the hanging cage net space for 1.5x3.8x2.2Mx2, equivalent to the cargo capacity of two sets of double cage SC type construction elevator, the device has low price less investment, safe and reliable performance, suitable for promotion in small high-rise building construction materials, is a renewal product of gantry / derrick and backward products, also is the construction elevator substitute equipment; equipment including television monitoring system; basket discharging manual floor safety stopping device; broken rope automatic anti dropping device; super low overweight limiter; inside and outside the feeding and discharging linkage power-off switch. Communication system! Is a small high-rise building construction materials to enhance the efficiency of high, the price of construction equipment.