Feeding mechanism assembly for high-speed hydraulic drilling rig

The invention discloses a feeding mechanism assembly for a high-speed hydraulic drilling rig. A first movable pulley and a second movable pulley are arranged side by side up and down; the two movable pulleys are in running fit with the same movable pulley yoke; a first steel wire rope fixing seat is fixedly arranged at one end of a first steel wire rope; the other end of the first steel wire rope firstly bypasses the second movable pulley and then bypasses an expanding wheel; the expanding wheel is in running fit with the upper part of an expanding wheel bracket; an expansion regulating part is fixedly arranged at the lower part of the expanding wheel bracket; the expansion regulating part is fixed with a drilling cramp in an assembling process; a second steel wire rope fixing seat is fixedly arranged at one end of a second steel wire rope; the other end of the second steel wire rope bypasses a fixed pulley after bypassing the first movable pulley. The feeding mechanism assembly adopts the steel wire ropes, a