Control means for the admission of pressure fluid to the nozzles or nozzle groups, in engagement with the mineral, of the cutting drum of a selective-cut heading machine or a shearer loader

摘要

The invention relates to a control means for the specific admission of pressure fluid to the nozzles (9) or nozzle groups, in engagement with the mineral, of the cutting drum (4, 5) of a selective-cut heading machine (1) or a shearer loader. A device (41), which turns the non-rotating part (35) of a rotary transmission leadthrough (28) about its axis and sets it in accordance with the respective position of the heading face (2), is part of this control means. This rotary transmission leadthrough (28) is located with the control device (41) outside the cutting drum (4, 5) on the drum supporting arm (3) and its rotating part (29) rotates at a speed corresponding to the cutting drum (4, 5). A special transmission (30) makes the transmission connection between the supporting-arm transmission and the rotating part (29) of the rotary transmission leadthrough (28). Each of the nozzles (9) or nozzle groups of the cutting drum (4, 5) is connected via a separate fluid line (13) and one separate rotary transmission leadthrough (11) each located in the drum interior to the rotary transmission leadthrough (28) allocated to the supporting arm (3) and is supplied from it with pressure fluid in synchronism with the drum rotation when they are opposite the heading face (2). IMAGE