FRONT BODY ACCESSIBLE TUNNEL BORING MACHINE

摘要

PURPOSE: A tunnel boring machine having an accessible front body is provided to deal promptly with the unexpected problems of a front body and a cutter head while a passage and a space for work are formed in the central part of a boring machine. CONSTITUTION: A tunnel boring machine comprises a hollow shaft(10), a gearbox(20), a first crusher(30), a second crusher(40) and a door(50). The cylindrical hollow shaft is fixed at the center of a tail body(120) and has a hollow part(11). The gearbox is united with the circumference of the hollow shaft by a bearing and receives driving force by being engaged with a reducer(141). The first crusher is fixed on the circumference of the gearbox. The second crusher is fixed at one end of the hollow shaft and forms a crushing part(31) and a first passage(32) with the first crusher. The door is installed in the front side of the second crusher to be opened.