Tensioning device for extending a threaded bolt, and tool suitable for this purpose, preferably drive adapter

摘要

The clamping device has a supporting tube (2) that surrounds a threaded end section and a cylinder (1) that is arranged in extension of the supporting tube. The cylinder is provided with a piston that is moved in longitudinal direction and connected with a hydraulic supply. An exchanging connector is formed by the piston. A tool (30), particularly drive adapter, is made of a cap-shaped section (31), which is provided at its inner side with tool surfaces for rotary coupling with an external polygons. A drive section (32) is arranged in extension to the cap-shaped section.