BORING RAM

摘要

The present invention relates to building and to mining, more particularly t o an apparatus for impact action designed for trenchless laying of new underground communications and for reconstruction of existing communications, the apparatus comprising a body, a striker with a through central channel, the striker positioned inside the aforesaid body with the possibility of performing reciprocal movement, a front chamber formed between the aforesaid body and aforesaid striker, a rear chamber formed between the aforesaid body and the aforesaid striker, an air distribution sy stem comprising channels for the inlet of compressed air into the aforesaid chambers and channels for the exhaust of spent air from the aforesaid chambers, an air conduit, and in which in accordance with the invention the aforesaid air distribution system is provided autonomously for each of the aforesaid chambers.