SCRAPING PLOUGH PLANT FOR COAL EXTRACTION ON GENTLY SLOPING AND INCLINED SEAMS Russian patent published in 2001 - IPC

FIELD: mining, particularly, means for coal excavation with its scraper transportation from breakage face. SUBSTANCE: scrapping plough plant includes pull winch installed on one flank of face and ropes secured with their one ends to winch; scraping ploughs fastened to ropes; and return station installed on the other flank of breakage face and connected with ropes. Scrapping plough plant has movable platform on which pull winch and return station are mounted. Movable platforms are secured in workings and provided with mechanisms of their synchronous advance in the course of scrapping. Scraping ploughs are installed at distance l = L/n from one another, where L is length of craping front; n is number of craping ploughs in plant. Return station is made either in the form of double-drum winch on whose drums ropes of pull winch are wound to which at the same time, scraping ploughs are fastened or in the form of two return drums with horizontal rotation axes installed parallel at a distance equalling distance between winding lines on drums of pull winch of ropes reeved to return drums whose lower runs are secured to scraping ploughs, and their upper runs are passed above scraping ploughs and secured to idle drum of pull winch. Working length of advance of pull winch are return station relative to secured movable platform may be equal to face advance step for one cycle of operations or multiple to it. EFFECT: higher productivity and operating reliability. 2 cl, 5 dwg