Drilling apparatus having head

Abstract

Disclosed is a drilling apparatus having a head. The drilling apparatus includes a main body, a lead supported by the main body of the drilling apparatus, a driving shaft slidably installed in the lead and having a unit rod connected thereto for performing a drilling work, and a head having an actuator for driving the driving shaft, wherein the driving shaft includes a screw coupling part formed on the outer circumferential surface of the driving shaft and screw-coupled with an end of the unit rod for performing the drilling work, and a screw coupling inducing part formed at a front end of the screw coupling part to induce screw coupling between the driving shaft and a rod screw coupling part formed at a hollow part formed at the end of the unit rod. The drilling apparatus can reduce the number of work numbers by combining the unit rod with the driving shaft, thereby increasing the efficiency of the drilling work.

Description

TECHNICAL FIELD[0001]The present invention relates to a drilling apparatus, and more particularly, to a drilling apparatus having a head, which facilitates engagement or disengagement between a rod and a driving shaft installed in the head when a drilling work is performed using a bit.BACKGROUND ART[0002]In general, a drilling apparatus is used to excavate deep holes into the ground for purposes of boring, soil testing or development of underground water. The drilling apparatus is classified into a type in which a boring work is performed while rotating a rod having a bit, and a type in which a boring work is performed by rotating a rod having a bit or a cutter and striking the bit or the cutter using the rod.[0003]A conventional drilling apparatus is disclosed in Korean Patent No. 624233. The disclosed drilling apparatus comprises a main body having a driving device such as an engine, a leader supported by the main body, and a head sliding along the leader and generating an elevati...

AI Technical Summary

Benefits of technology

[0015]As described above, in the drilling apparatus having a head according to the present invention, the unit rod and the driving shaft can be easily engaged with each other during a drilling work, thereby increasing the efficiency of the drilling work.

Problems solved by technology

In the course of drilling, if the unit rods have relatively small diameters, it is difficult to align the driving shaft of the head with the unit rod.

In particular, even if the unit rod and the driving shaft are coaxially aligned, it is not easy to screw-couple the unit rod to the driving shaft.

Thus, it is impossible to increase the efficiency of the drilling work due to a trouble in screw-coupling of the unit rod and the driving shaft.

Since there is no separate means for balancing the support pipe, the support pipe may vibrate or may not be aligned with the center of a rotation shaft.

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