Dense-type raise-boring machine with detachable hob

Abstract

The invention discloses a dense-type raise-boring machine with a detachable hob. The dense-type raise-boring machine comprises a base bracket, a telescopic driving mechanism, a rotating driving mechanism, a drill pipe and a drill bit. The bottom of a cutter holder is installed on a cutterhead through a rotating movable mechanism. The hob comprises a carrier piece and wall breaking pieces. The carrier piece is of a round-table-shaped structure. A plurality of threaded holes are uniformly distributed around the exterior of the carrier piece. Each wall breaking piece is of a cylindrical structure. The outer side of each wall breaking piece is provided with an outer thread. The wall breaking pieces are connected with the threaded holes around the exterior of the carrier piece in a threaded mode through the outer threads. The end parts of the outer sides of the wall breaking pieces extend to the outer sides of the threaded holes of the carrier piece. The end part of the outer side of each wall breaking piece is provided with a grinding block of a semicircular structure. According to the dense-type raise-boring machine with the detachable hob, the hob is ingenious in structural design, dense wall breaking piece layers are formed at the exterior of the carrier piece, the carrier piece and the wall breaking pieces are replaced and installed conveniently, the cost is saved, and the installing efficiency is improved.

Description

technical field [0001] The invention relates to a hob split dense type raise drilling machine. Background technique [0002] At present, raise drilling rigs are mainly used in industries such as vertical shafts, inclined shafts, surge shafts, ventilation shafts and drainage shafts in hydropower projects, ventilation shafts in railway construction, and mine slag shafts. The drill bit in the raise drilling rig is the most important part of the whole mechanism. Generally, the drill bit includes a cutter head, a tool seat, and a hob. The tool seat is installed on the cutter head, and the hob is installed on the tool seat. The distribution and structure of the hob It has a great impact on the efficiency and stability of rock breaking. The existing tool holders are fixedly connected to the cutter head, and the positions of the cutter holders are pre-distributed. Self-correct the position of the tool holder according to the rock-breaking surface; in addition, the existing hob has ...

AI Technical Summary

Problems solved by technology

The drill bit in the raise drilling rig is the most important part of the whole mechanism. Generally, the drill bit includes a cutter head, a tool seat, and a hob. The tool seat is installed on the cutter head, and the hob is installed on the tool seat. The distribution and structure of the hob It has a great impact on the efficiency and stability of rock breaking. The existing tool holders are fixedly connected to the cutter head, and the positions of the cutter holders are pre-distributed. Self-correct the position of the tool holder according to the rock-breaking surface; in addition, the existing hob has a cylindrical structure with integrated grinding ribs on the side of the cylindrical structure, but such an integrated hob will be hit after long-term operation Damaged or severely worn, so the entire hob is scrapped, and the hob needs to be disassembled and reinstalled with a new hob, which affects operating efficiency and operating costs

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