US 9,810,066 B2
Control method for longwall shearer
Andreas Johannes Westphalen, Duisburg (DE); Euan Kirkhope, Cameron Park (AU); Siddartha Saikia, Chennai (IN); and Hrishikesh Ranjalkar, Bangalore (IN)
Assigned to Caterpillar Global Mining Europe GmbH, Lunen (DE)
Appl. No. 14/889,336
Filed by Caterpillar Global Mining Europe GmbH, Lünen (DE)
PCT Filed May 9, 2014, PCT No. PCT/EP2014/001250
§ 371(c)(1), (2) Date Nov. 5, 2015,
PCT Pub. No. WO2014/183854, PCT Pub. Date Nov. 20, 2014.
Claims priority of application No. 13167547 (EP), filed on May 13, 2013.
Prior Publication US 2016/0123145 A1, May 5, 2016
Int. Cl. E21C 35/24 (2006.01); E21C 35/12 (2006.01); E21C 29/02 (2006.01); E21C 27/32 (2006.01); E21C 25/10 (2006.01); E21C 35/08 (2006.01)
CPC E21C 35/24 (2013.01) [E21C 25/10 (2013.01); E21C 27/32 (2013.01); E21C 29/02 (2013.01); E21C 35/08 (2013.01); E21C 35/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for controlling a shearer configured to travel along a longwall face in an underground mine in a first travel direction (E) and a second travel direction (F) to extract material with a first cutting drum and a second cutting drum, the method comprising steps of:
setting a first cutting profile including a plurality of desired positions (Di) to be approached by the first cutting drum in the first travel direction (E);
advancing the shearer toward the longwall face;
determining a plurality of actual advancing vectors (vi) along the longwall face, each actual advancing vector (vi) indicating a change of a position of the shearer resulting from advancing the shearer;
determining a plurality of shearer orientations (Oi) along the longwall face resulting from advancing the shearer; and
generating a second cutting profile including a plurality of desired positions (Ri) to be approached by at least one of the first cutting drum and the second cutting drum in the second travel direction (F) of the shearer based on the first cutting profile, the plurality of actual advancing vectors (vi), and the plurality of shearer orientations (Oi),
the second travel direction (F) being opposite the first travel direction (E).