EP 1589187 B1 20070314 - Bedrock drilling and excavating apparatus
Title (en)
Bedrock drilling and excavating apparatus
Title (de)
Grundsteinbohr- und -aushubgerät
Title (fr)
Dispositif de forage et d'excavation de sols rocailleux
Publication
Application
Priority
EP 04101704 A 20040423
Abstract (en)
[origin: EP1589187A1] A bedrock drilling and excavating apparatus receives power from a rotational power source to drive a drill to strike and shatter bedrock under the gravity of the apparatus and reciprocal vibrations of a pneumatic unit (50) located on the apparatus. The apparatus includes a coupling device (10) to couple with the rotational power source and an air intake vibration structure (12), a coupling sleeve (20) which has one end coupling with the lower end of a coupling axle and a connector which further couples to the pneumatic unit, and a drill (40) coupling to the pneumatic unit. The pneumatic unit drives the drill to vibrate up and down reciprocally to strike and shatter bedrock. The drill has a drill shell (41) which is alterable according to the diameter of the service shaft without changing the diamter of the pneumatic unit. The drill shell has a plurality of conical drill gimlets (42) mounted thereon in different biased angles to shatter the bedrock and improve drilling and excavating effect. <IMAGE>
IPC 8 full level
E21B 4/16 (2006.01); E21B 7/00 (2006.01); E21B 7/24 (2006.01); E21B 10/44 (2006.01)
CPC (source: EP)
E21B 7/003 (2013.01); E21B 7/24 (2013.01); E21B 10/44 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1589187 A1 20051026; EP 1589187 B1 20070314; AT E356917 T1 20070415; DE 602004005311 D1 20070426; DE 602004005311 T2 20070628
DOCDB simple family (application)
EP 04101704 A 20040423; AT 04101704 T 20040423; DE 602004005311 T 20040423