EP 0176235 A1 19860402 - Mining machine.
Title (en)
Mining machine.
Title (de)
Schrämmaschine.
Title (fr)
Haveuse.
Publication
Application
Priority
GB 8421670 A 19840825
Abstract (en)
A roadheader type mining machine comprises a self-propelled chassis, an elongate boom (9) having a longitudinal axis (10), the boom (9) being supported by the chassis for powered positioned adjustment with respect to the chassis, a terminal end (13) of the boom (9) provided with a rotary cutting head (14) having a plurality of nozzles (20) each to emit a water spray or jet (41), water conveying conduits (22) connectable between the nozzles (20) and a source of pressurised water, and an on/off water flow control valve (24) associated with each conduit (22), and a collar (34) surrounding at least a portion of the boom (9) about an axis co-axial with the boom longitudinal axis (10) and being rotatable about this axis by power means (36) to a selected position, the collar (34) carrying, and/or positionally controlling, valve actuation means (30) whereby periodic water supply to the nozzles (20), due to head rotation, within a selected radial sector is controllable by the valves (24), phased activation of which is controlled by positioned adjustment of the collar (34) to provide appropriate positional adjustment of the valve actuation means (30).
IPC 1-7
IPC 8 full level
E21C 35/22 (2006.01); E21C 35/23 (2006.01)
CPC (source: EP)
E21C 35/23 (2013.01)
Citation (search report)
- [Y] DE 2256232 A1 19740522 - GEWERK EISENHUETTE WESTFALIA
- [Y] DE 2808915 A1 19790906 - EICKHOFF GEB
- [Y] DE 3122323 A1 19821223 - GEWERK EISENHUETTE WESTFALIA [DE]
- [Y] DE 3144741 A1 19830519 - GEWERK EISENHUETTE WESTFALIA [DE]
- [Y] GB 2072238 A 19810930 - EICKHOFF GEB
- [Y] US 4049318 A 19770920 - FRUIN HARRY JAMES
Designated contracting state (EPC)
AT DE GB
DOCDB simple family (publication)
EP 0176235 A1 19860402; EP 0176235 B1 19881012; AT E37928 T1 19881015; DE 3565574 D1 19881117; GB 8421670 D0 19840926
DOCDB simple family (application)
EP 85306000 A 19850823; AT 85306000 T 19850823; DE 3565574 T 19850823; GB 8421670 A 19840825