公开(公告)号：US20200173764A1

公开(公告)日：2020-06-04

申请号：US16701749

申请日：2019-12-03

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Juha PIIPPONEN ,  Johannes VÄLIVAARA

IPC: F42D1/22 ,  F42D3/04 ,  E21B7/02

Abstract: An apparatus for feeding a tubular object inside a drill hole, a rock drilling rig and a method of supporting mouth openings of drill holes is provided. The apparatus includes a support device for supporting an elongated tube element blank having the potential for several successive tube inserts. A front end of the tube element blank is moved longitudinally inside a drill hole by means of a feeding device. Thereby, the drill hole is provided with a protective section extending a limited longitudinal dimension towards a bottom of the drill hole. The apparatus further includes a separation device for detaching the mentioned tube inserts one by one from the tube element blank.