Small hard rock shield tunneling machine for mine

Abstract

The invention provides a small hard rock shield tunneling machine for a mine. The small hard rock shield tunneling machine solves the problem that in the prior art, when the excavation diameter is excessive small, normal maintenance and tool changing are affected, a weak broken stratum cannot be adapted, and safety risks exist. The small hard rock shield tunneling machine comprises a front shieldbody provided with a rotating cutter head, the small hard rock shield tunneling machine is characterized in that a cutter head maintenance space is arranged at the front end of the interior of the front shield body, the front shield body is provided with small gripper shoe mechanisms, and a large gripper shoe mechanism is arranged on a gripper shoe shield at the rear of the front shield body; a propulsion hydraulic cylinder is arranged between the gripper shoe shield and the front shield body; a translational sliding frame is arranged on a belt telescopic guide groove disposed inside a tail shield body at the rear end of the gripper shoe shield, and the translational sliding frame is provided with a pipe segment erector and an anchor rod drill rig; and a telescopic main engine belt conveyor is arranged on the middle portions of the front shield body and the gripper shoe shield and in a belt telescopic guide groove in a penetrating mode. The small hard rock shield tunneling machine is reasonable in design, compact in structure and small in excavation diameter, can perform mixed support by pipe segments and anchor rods, can adapt to long distance tunneling of the weak broken stratum,and has high operation efficiency, and use is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of mining engineering equipment, and relates to an operation equipment for driving hard rock in coal roadways, in particular to a kind of equipment with small excavation diameter, capable of mixed support of segments and bolt steel mesh, and can adapt to weak and broken strata Long-distance excavation, high operating efficiency, using safe and reliable small hard rock shield tunneling machine for mining. Background technique [0002] The traditional coal roadway hard rock roadheader is composed of cutter head, main drive, shield, girder, propulsion cylinder, support shoe, belt conveyor, rear support, hydraulic system and electrical system; it can excavate rock formations with a hardness f value greater than 10 . Its working principle is: the cutter head rotates to cut the rock, and uses the bucket on the cutter head to collect the cut rock fragments on the belt conveyor in the center, and then transports th...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the excavation diameter of the existing coal roadway hard rock excavation equipment cannot be less than 3.3 meters, which affects normal maintenance and tool change, cannot perform mixed support of segments and anchor bars, and is difficult to normally excavate in weak and broken strata , poor operation safety and other issues, to provide a small excavation diameter, capable of mixed support of segments and anchor rod steel mesh, can adapt to long-distance excavation in weak and broken strata, high operating efficiency, safe and reliable use of small mining hard Rock Shield TBM

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