Explosive powder charge operated fastening element setting tool

摘要

A piston-driven plunger (7) propels the bolts into the mounting. The pistol grip (15) has a sliding mounting under the gun. A gas cushion backed hydraulic cylinder (21) is incorporated in one component and a piston (23) sliding inside the hydraulic cylinder is attached to the other component. The explosive charge for the gun is applied via a cartridge and the damping piston has no control valves. The damping piston provides more effective damping in one direction. The piston edge has a sharp profile which generates turbulence during the recoil movement while the return stroke has a more streamlined flow pattern. The piston edge can have a flow aperture, or the cylinder can have a bypass structure with a greater resistance in one direction.