TWO-HOLE-DRILLING CORE DRILLING MACHINE

Title:

TWO-HOLE-DRILLING CORE DRILLING MACHINE

Document Type and Number:

WIPO Patent Application WO/2023/013942

Kind Code:

A1

Abstract:

A two-hole-drilling core bit drilling machine of the present invention may comprise: a main body part; a vertically-movable carriage which is mounted on the main body part so as to be vertically movable; a fixed plate which is coupled to one side surface of the vertically-movable carriage and supports a driving shaft of a motor so that the driving shaft may rotate; a rotatable plate which is fastened to the fixed plate by having the rotation angle thereof changed; a movable plate which is fastened to the rotatable plate by having the length thereof changed; a belt or chain which is mounted between a driving pulley coupled to the driving shaft, and a driven pulley coupled to a driven shaft which is rotatably mounted to the movable plate; a first core bit which is coupled to the driving shaft; and a second core bit which is coupled to the driven shaft.

Inventors:

LEE SUNG JUN (KR)
LEE CHAE MUN (KR)

Application Number:

PCT/KR2022/010838

Publication Date:

February 09, 2023

Filing Date:

July 22, 2022

Export Citation:

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Assignee:

EGUN CO LTD (KR)

International Classes:

B28D1/14; B23B39/16; B23B47/26

Foreign References:

JP2006015479A	2006-01-19
KR101302141B1	2013-08-30
JP2001105211A	2001-04-17
JPH05269731A	1993-10-19
KR200278379Y1	2002-06-20
KR102360421B1	2022-02-09
KR102370202B1	2022-03-04

Other References: