Title:
Equipment, rock drilling rigs and methods for rock drilling
Document Type and Number:
Japanese Patent JP6302021
Kind Code:
B2
Abstract:
The invention relates to an apparatus, rock drilling rig and method for rock drilling. The apparatus comprises a turning device (TD) for moving a drilling tool (8) around longitudinal axis of the tool. The turning movement (T) is controlled by means of an alternating turning system (ATS) so that direction of turning movement is continuously reversed to first and second turning directions. Turning angle of the tool is restricted and a safety system (SS) is configured to monitor the operation and to ensure that a predetermined turning angle is not exceeded.
Inventors:
Vitaniemi, Jarno
Lahadelma, Ilkka
Kiviniemi, Tonmi
Leskinen, Martti
Ficcola, Mika
Lahadelma, Ilkka
Kiviniemi, Tonmi
Leskinen, Martti
Ficcola, Mika
Application Number:
JP2016173259A
Publication Date:
March 28, 2018
Filing Date:
September 06, 2016
Export Citation:
Assignee:
Sandvik Mining and Construction Owai
International Classes:
E21B6/06
Domestic Patent References:
| JP2001012180A | ||||
| JP48025497Y1 | ||||
| JP60159210A | ||||
| JP1303304A |
Attorney, Agent or Firm:
Sonoda/Kobayashi Patent Business Corporation