SPAENNORGAN VID EN PNEUMATISK SLAGANORDNING FOER NEDSAENKNING AV STAONGFORMADE ELEMENT I MARK OCH UTDRAGNING AV DESSA ELEMENT FRAON MARKEN

摘要

A rod-clamping device comprises an impact load transmission assembly which includes a housing having a through axial cavity and a system of jamming elements, a rocoil force take up assembly which includes a housing having a through axial cavity, a collar sleeve, and a system of jamming elements, and a resilient element adapted to urge the jamming elements in a direction counter to the forces being exerted, the impact load transmission assembly having a sleeve member, each system of the jamming elements in the two assemblies being forced to the housing and the rod being driven by a separate resilient element.