PNEUMATIC PERFORATOR WITH INDEPENDENT ROTATION OF TOOL Russian patent published in 1996 - IPC

FIELD: mining and building industry; impact rock drilling machines. SUBSTANCE: offered pneumatic perforator has housing with cover, striking mechanism with piston-striker, air distributor and rotator whose air distributing mechanism is made as system of channels one of which communicates with air distributing device being chosen to provide 9-12 Nm of maximum torque per 1 1 mm² of cross section, i.e. where M_max - maximum torque. Other channel furnished with rotator is chosen to provided 5-7 W of impact power per 1 mm² of cross section, i.e. where N_imp - impact power . EFFECT: enlarged operating capabilities. 1 dwg