EP 0921270 A4 20001108 - UNDERGROUND AUGERING MACHINE BY ELECTRICAL CRUSHING, EXCAVATOR, AND ITS EXCAVATING METHOD
Title (en)
UNDERGROUND AUGERING MACHINE BY ELECTRICAL CRUSHING, EXCAVATOR, AND ITS EXCAVATING METHOD
Title (de)
MASCHINE ZUM UNTERGRUNDBOHREN DURCH ELEKTRISCH HERVORGERUFENE GESTEINSZERKLEINERUNGEN, GRABGERÄT SOWIE GRABVERFAHREN
Title (fr)
MACHINE SOUTERRAINE A TARIERE POUR CONCASSAGE ELECTRIQUE, EXCAVATRICE ET PROCEDE D'EXCAVATION
Publication
Application
Priority
- JP 9702889 W 19970820
- JP 24116396 A 19960822
Abstract (en)
[origin: WO9807960A1] An underground augering machine by electrical crushing provided with a mechanism which can surely hold a solution around electrodes for electrical crushing, an excavator, and its control method. The underground augering machine is provided with at least one pair of electrodes (1) for electrical crushing provided on the front face of the underground augering machine, a pulse generator (10) which applies a high-voltage pulse between the electrodes (1), a solution (9) filling up the spaces around the electrodes (1), a solution retaining cover (14) which retains the solution around the electrodes (1) between the front face of the machine and the ground and is provided on the outer peripheral surface of the machine, a solution feeding pipe (7) for feeding the solution to the peripheries of the electrodes (1), a pump (6) which supplies the solution to the front face of the machine through the pipe (7), and a storage tank (5) for storing the solution. Cases (19) may be provided around the electrodes (1) for retaining the solution around the electrodes between the front face of the excavator and the ground.
IPC 1-7
E21C 37/18; E21D 9/08; E21D 9/10; E21B 7/15; E21C 35/20; E21D 9/00
IPC 8 full level
E21B 7/15 (2006.01); E21C 37/18 (2006.01); E21D 9/00 (2006.01); E21D 9/06 (2006.01); E21D 9/10 (2006.01)
CPC (source: EP)
E02F 5/18 (2013.01); E02F 5/305 (2013.01); E21B 7/001 (2013.01); E21B 7/15 (2013.01); E21C 37/18 (2013.01); E21D 9/00 (2013.01); E21D 9/06 (2013.01); E21D 9/10 (2013.01); E21D 9/1073 (2013.01)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9807960A1
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
WO 9807960 A1 19980226; EP 0921270 A1 19990609; EP 0921270 A4 20001108
DOCDB simple family (application)
JP 9702889 W 19970820; EP 97936846 A 19970820