STROKE LIMITING DEVICE FOR PISTON PUSH MECHANISMS, PARTICULARLY FOR RIPAGE OR ADVANCE JACKS INTENDED TO RIP A CONVEYOR OR A SUPPORT GOING ON DOWNHOLE MINING

摘要

P THIS DEVICE INCLUDES A THRUST BODY ARRANGED BETWEEN THE CYLINDER 12 AND THE HEAD 14 OF THE PISTON ROD THEREOF, THIS THRUST BODY BEING CONSISTING OF A SEGMENT 22 CONCEPTIVELY OF FLAT FORM, WHICH ONLY PARTIALLY SURROUNDES THE PISTON ROD 13 AND WHICH CAN BE ENGAGED FROM THE SIDE ON THIS ROD. THIS STOP SEGMENT IS MAINTAINED AT THE REQUIRED DISTANCE FROM HEAD 14 OF THE PISTON ROD BY SPREADING ELEMENTS SUCH AS RODS 23, WHICH MAY BE ENGAGED THROUGH THEIR END IN HOUSINGS 24, 28 OF THIS HEAD 14 AND FROM THIS BUG SEGMENT 22. /P