Multifunctional screw drill and reaming device

摘要

A multifunctional screw drill and reaming device, for the testing of the structure and composition of various soil types, as well as for sampling and boring, extracting and injecting of gases and various types of chemicals as well as liquids, slurry, granules and solids. Screws can be hydraulically, pneumatically, mechanically, electrically or manually driven. Dependent upon the operation, the secondary screws (2) can rotate and change position or rotational direction within the primary screw's bore (1), or both primary (1) and secondary screws (2) can be coupled and rotate as one unit.

主权项

1. An apparatus for drilling, the apparatus comprising:
a primary forward screw drill having a primary forward screw drill bore and drill threading; a hollow cylindrical primary drive shaft coupled to the primary forward screw drill and having at least one perforation; a secondary reverse screw drill housed within the primary forward screw drill bore, wherein drill threading of the secondary reverse screw drill is opposite in orientation to the drill threading of the primary forward screw drill; a secondary forward screw drill operatively coupled with the secondary reverse screw drill, wherein the threading of the secondary forward screw drill is opposite in orientation to the threading of the secondary reverse screw drill; a secondary drive shaft attached to the secondary reverse screw drill and housed within the primary drive shaft and primary forward screw drill bore; and at least three rotation channels recessed within the outer diameter of the secondary drive shaft.