QTZ80自升式塔式起重机是一种可独立或附着安装使用、液压顶升接高、小车变幅的新型高性能塔机。该机具有以下主要特点：

QTZ80 self-lifting tower crane is a new and high-performance crane which can be used independently or in attachment, equipped with hydraulic lifting and connection and dolly range-changing. This machine has the following main characteristics:

1、起重倍率可转换；

1. The lifting magnification is transferable.

2、起升机构为涡轮制动绕线电机，回转机构为绕线电机，工作平稳，变幅机构为三速电机，就位快捷方便，效率高，使用维护费用低。

2. The lifting framework is a turbine braking winding motor. The circumgyrating structure is a winding motor, with stable performance. And the range-changing framework is tri-speed motor, with speedy and convenient positioning, high efficiency, and low maintenance cost.

3、臂架长度变化范围大，可满足更广泛的工程需要。

3. The arm’s length has a wide range and can satisfy comprehensive project needs.

4、顶升踏步具有锁紧装置，确保了降塔时的顶升安全。

4. The lifting and stepping have locking device so as to ensure the lifting safety during tower descending.