BASE OF POWERED SUPPORT UNIT Russian patent published in 1996 - IPC

FIELD: mining industry. SUBSTANCE: base of powered support unit has body, extensible skids with lugs, antifriction coating and flexible hoses. Body is T-shaped in cross-section. Extensible skids are installed under its arms. Skids have recesses on side walls and coming in contact with base arms through supporting plates with webs entering with their projections the recesses of extensible skids. The latter are connected with base arms by means of bolts for relative motion over the normal to plate supporting surface. Flexible hoses are located between the supporting plates and the surface of base arms. Secured to base members are removable side members limiting motion of supporting plates in transverse direction. The base on the face end equalling advance web in value has reduced width for body movement between skid lugs. EFFECT: higher efficiency. 2 dwg