EP 0145701 B1 19880420 - PERCUSSION DRILL CONTROLS
Title (en)
PERCUSSION DRILL CONTROLS
Publication
Application
Priority
AT 393183 A 19831108
Abstract (en)
[origin: EP0145701A1] 1. A device for percussion drilling in rock or the like having a rotary mechanism (7) which is drivable with a pressure medium, in particular a pressure fluid, a percussion mechanism (14), and a forward-feed motor (20), which are connected to one or more pressure sources (4, 5, 6) via pressure medium lines (1, 2, 3) having adjusting means (8, 15, 21), e.g. valves or the like, a control line (18) being provided from the pressure medium feed line (1) of the rotary mechanism (7) to an adjusting means (15) in the pressure medium feed line (2) of the percussion mechanism (4), characterised in that the pressure medium feed lines (1, 2, 3) are connected to the rotary mechanism (7), the percussion mechanism (14), and the forward-feed motor (20) separately or in parallel, and control lines (12, 18, 29) are provided from the pressure medium feed line (13) of the rotary mechanism (7) to the adjusting means (8, 15, 21) in the pressure medium feed lines to the percussion mechanism (14), the forward-feed motor (20), and optionally the rotary mechanism (7) which adjusting means are controllable by excess pressure in the pressure medium feed line (13) to the rotary mechanism (7), and in that at least one control line (29) having an adjusting means (28) is connected to a further control line (23, 24) with compressed air, and the further control line (23, 24) is connected to the adjusting means (21) of the pressure medium feed line of the forward-feed motor (20).
IPC 1-7
IPC 8 full level
B25D 9/16 (2006.01); E21B 1/00 (2006.01); E21B 1/26 (2006.01); E21B 44/06 (2006.01); F15B 11/17 (2006.01)
CPC (source: EP)
E21B 44/06 (2013.01); F15B 11/17 (2013.01); F15B 2211/20538 (2013.01); F15B 2211/327 (2013.01); F15B 2211/329 (2013.01); F15B 2211/605 (2013.01); F15B 2211/6313 (2013.01); F15B 2211/67 (2013.01); F15B 2211/7058 (2013.01); F15B 2211/78 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0145701 A1 19850619; EP 0145701 B1 19880420; AT 381363 B 19861010; AT A393183 A 19860215; DE 3470582 D1 19880526; FI 81886 B 19900831; FI 81886 C 19901210; FI 844200 A0 19841025; FI 844200 L 19850509; JP S60112987 A 19850619
DOCDB simple family (application)
EP 84890204 A 19841031; AT 393183 A 19831108; DE 3470582 T 19841031; FI 844200 A 19841025; JP 23049584 A 19841102