Gear floating type raise-boring machine

Abstract

The invention discloses a gear floating type raise-boring machine. The gear floating type raise-boring machine comprises a base bracket, a telescopic driving mechanism, a rotating driving mechanism, adrill pipe and a drill bit. The bottom of a cutter holder is installed on a cutterhead through a rotating movable mechanism. A hob comprises a carrier piece, a plurality of floating gears and a plurality of elastomers. The carrier piece is of a circular-table-shaped structure. A plurality of clamping-connecting sliding grooves are formed around the carrier piece and distributed evenly to form anannular structure in a surrounding mode. The multiple elastomers are installed in the clamping-connecting sliding grooves. The multiple floating gears are connected into the clamping-connecting sliding grooves in a clamped mode and abut against the elastomers in a pressing mode to make the elastomers be compressed under force. The outer side of the periphery of the carrier piece is evenly connected with the multiple floating gears in a clamped mode. According to the gear floating type raise-boring machine, the floating gears can be matched with the broken rock surface, so that the rock breaking efficiency and smoothness are improved.

Description

technical field [0001] The invention relates to a gear floating 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 a ...

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 a new hob needs to be disassembled and reinstalled, which affects operating efficiency and operating costs; the angle of the hob in the prior art cannot be adjusted according to the rock breaking surface , resulting in inconsistent contact between the hob and the rock-breaking surface, resulting in low rock-breaking efficiency

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