Adjustable drilling rig rope wheel assembly

The utility model relates to the field of down-the-hole drills, and particularly discloses an adjustable drilling rig rope wheel assembly which comprises a lower drilling rig, a lower double-wheel seat, a lower double-rope wheel, a lower single-wheel seat, a lower single-rope wheel, an upper drilling rig, an upper double-rope wheel and an upper single-rope wheel. The upper drilling frame and the lower drilling frame are provided with the upper single-rope wheel, the lower single-rope wheel, the upper double-rope wheel and the lower double-rope wheel respectively, the upper single-rope wheel and the lower single-rope wheel are matched with each other, one frame body can be compatible with drilling machines of a single-rope structure and a double-rope structure at the same time, and the lifting speeds of the two structures are the same when the two structures are used. And the drilling machine is positioned in the middle, so that the operation efficiency is improved, and the position requirement when the drilli