QTZ31.5 tower crane is one new kind of crane, which is researched by Changsha Construction Machinery Institute and our factory. It is horizontal arm support, trolleying, top slewing, slef-erecting tower crane.
Its free standing height is 30m, attached heights are 60m and 80m. 60m hoisting height needs two units of collar ties and 80m needs four units of collar ties. Attached height can be adjusted by heights of buildings.
The tower crane is widely used in construction of office blocks, industrial premises, residential houses and other high rise buildings. Its max. Jib lengh is 42m, max. Load moment is 315 KNm, max. Load is 3t, wide work range, high work efficiency and stable proceeding.
QTZ31.5 tower crane is equipped with various safety devices, including load moment limiter, load limiter, height limiter, slewing limiter, trolleying limiter and so on, then that can keep the tower crane work well.
Advanced crane parameters, stable performance, good looking and wide work range make QTZ31.5 tower crane be popular in small- and medium-sized building construction enterprises.