公开(公告)号：US20230313613A1

公开(公告)日：2023-10-05

申请号：US18023541

申请日：2021-08-31

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Jarkko UOTILA ,  Eero VISKARI ,  Visa TOPPINEN ,  Tommi KIVINIEMI

IPC: E21B7/02 ,  G08B21/18

CPC classification number: E21B7/022 ,  G08B21/182

Abstract: A drilling rig includes a carrier, a ground support attached to the carrier for supporting the carrier on the ground, a drilling boom attached at a first end to the carrier, a feed beam attached to a second end of the drilling boom, a drilling unit attached movably along the feed beam, a ground pin attached to the feed beam for supporting the feed beam onto the ground, and control means configured for performing the steps of at least: receiving ground support force information indicative of force applied by the ground support to the ground, and detecting ground contact state of the ground pin on the basis of the received ground support force information.