公开(公告)号：US20240271488A1

公开(公告)日：2024-08-15

申请号：US18436243

申请日：2024-02-08

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Jarno VIITANIEMI ,  Pertti PARKKINEN ,  Martti LESKINEN ,  Mikko HAMALAINEN ,  Perttu KOIVUMAKI ,  Timo KELA ,  Ville KOHOLA

IPC: E21B7/02

CPC classification number: E21B7/022 ,  E21B7/025

Abstract: An arrangement and method for heating an impact device of a rock treating machine (Rtm) in low-temperature operating conditions is provided. The arrangement includes a warm-up mode (WM) for feeding pre-heated hydraulic fluid through a feed channel to a hydraulic circuit of the impact device. One or more hydraulic accumulators are provided in the hydraulic circuit. The feed channel is provided with a control element for limiting the feeding of the pre-heated hydraulic fluid during the warm-up mode. The control element limits the feeding of the pre-heated hydraulic fluid in the feed channel so that separating elements of the pressure accumulators do not move.

公开(公告)号：US20170074086A1

公开(公告)日：2017-03-16

申请号：US15265008

申请日：2016-09-14

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Jarno VIITANIEMI ,  Ilkka LAHDELMA ,  Tommi KIVINIEMI ,  Martti LESKINEN ,  Miika HUIKKOLA

IPC: E21B44/02 ,  E21B7/02

CPC classification number: E21B44/02 ,  E21B3/025 ,  E21B7/022 ,  E21B7/025 ,  E21B41/0021

Abstract: An apparatus, rock drilling rig and method for rock drilling includes a turning device for moving a drilling tool around longitudinal axis of the tool. The turning movement is controlled by an alternating turning system so that direction of turning movement is continuously reversed to first and second turning directions. The turning angle of the tool is restricted and a safety system (is configured to monitor the operation and to ensure that a predetermined turning angle is not exceeded.

Abstract translation: 用于岩石钻井的装置，岩石钻机和方法包括用于沿着工具的纵向轴线移动钻具的转向装置。 转动运动由交替的转动系统控制，使得转向运动的方向被连续地反转到第一和第二转向。 刀具的转动角度受到限制，并且安全系统（被配置为监视操作并确保不超过预定的转动角度）。