QTZ80自升式塔式起重機是一種可獨立或附着安裝使用、液壓頂升接高、小車變幅的新型高性能塔機。該機具有以下主要特點：

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、起重倍率可轉換；

1. The lifting magnification is transferable.

2、起升機構為渦輪制動繞線電機，迴轉機構為繞線電機，工作平穩，變幅機構為三速電機，就位快捷方便，效率高，使用維護費用低。

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、臂架長度變化範圍大，可滿足更廣氾的工程需要。

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

4、頂升踏步具有鎖緊裝置，確保了降塔時的頂升安全。

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