Anchor rod multi-section reaming machine tool and application thereof

An anchor rod multi-section reaming machine tool used cooperatively with an anchor rod drill rig, comprising a hydraulic station, a first pipe, a second pipe and a reaming machine head, wherein the reaming machine head comprises a hydraulic cylinder, an arch pressing device fixing disc, an arch pressing device, a base plate and a supporting structure;

• the hydraulic cylinder is fixed at a lower end of a drill rod of the anchor rod drill rig;
• the hydraulic cylinder comprises a cylinder body, a piston and a piston rod, the piston is arranged inside the cylinder body and can axially move relative to the cylinder body such that the cylinder body is divided into a hydraulic cylinder upper chamber and a hydraulic cylinder lower chamber which have variable volume, the hydraulic cylinder upper chamber is connected with the hydraulic station through the first pipe, the hydraulic cylinder lower chamber is connected with the hydraulic station through the second pipe, an upper end of the piston rod is fixed at a lower portion of the piston, and a lower end of the piston rod is fixed at an upper portion of the arch pressing device fixing disc;
• the arch pressing device comprises a pair of upper arch arms and a pair of lower arch arms radially arranged symmetrically to the pair of upper arch arms, upper ends of the pair of upper arch arms are rotatably connected with a central position of a lower portion of the arch pressing device fixing disc, lower ends of the pair of upper arch arms are rotatably connected with upper ends of the pair of lower arch arms, and lower ends of the pair of lower arch arms are rotatably connected with a central position of an upper portion of the base plate;
• and
• the supporting structure is fixed between a lower portion of the cylinder body of the hydraulic cylinder and the base plate.