Construction device with extendable mast and method for operation of same

摘要

The construction device comprises an extended pole (1) with an upper pole element (2) and a lower pole element (3). The upper pole element is longitudinally displaced relative to the lower pole element. A linear drive (10) is provided for displacing both the pole elements relative to each other. The linear drive has an upper drive part (12) which is mounted at the upper pole element. A lower drive part (13) of the linear drive is displaced longitudinally to the lower pole element. A fixing device (30) is provided at the lower pole element. An independent claim is included for a method for operating a construction device.