Method and arrangement for adjusting the percussion energy in a percussion drilling apparatus

The invention relates to an arrangement and a method for guiding drilling in a drilling machine, whose hammer gear, fitted in a frame (1), comprises a percussion piston (2) which reciprocates in the axial direction (X) and, to perform drilling, continually strikes a percussion point (11) in a drill...

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Bibliographic Details
Main Author PEKKA SALMI
Format Patent
LanguageEnglish
Published 12.11.2001
Edition7
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
HAND TOOLS
MANIPULATORS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERCUSSIVE TOOLS
PERFORMING OPERATIONS
PORTABLE POWER-DRIVEN TOOLS
TRANSPORTING
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Summary:The invention relates to an arrangement and a method for guiding drilling in a drilling machine, whose hammer gear, fitted in a frame (1), comprises a percussion piston (2) which reciprocates in the axial direction (X) and, to perform drilling, continually strikes a percussion point (11) in a drill shank (3) fitted in the frame (1). To guide the stroke transmitted to the drill shank (3) and to control the percussion energy in different drilling situations, the operating position of the hammer gear (2) in relation to said percussion point (11) is changed by moving said hammer gear in the axial direction (X). The percussion piston (2) is at least partly fitted within a tubular sleeve (10), movable in the axial direction, wherein the functional position of said hammer gear is changed by moving said sleeve (10) in relation to the frame (1).
Bibliography:Application Number: AU20010056395