How to install the cutter head drive and the pinion of the cutter head drive

摘要

PROBLEM TO BE SOLVED: To provide a cutter head drive device capable of preventing a component component of a cutter head drive device from falling on the drive device body frame side when a component component of the drive device main body frame is replaced. A cutter head drive device 100 includes a ring gear 31 that transmits a rotational force to a cutter head 11, a gear portion 50 that meshes with the ring gear 31, and a rotary shaft portion 51 that extends along a rotation center axis β of the gear portion 50. A pinion 5 including the above, a front bearing member 60 and a rear bearing member 61 that support the rotating shaft portion 51 from both ends, and a pinion support frame that supports the pinion 5 via the front bearing member 60 and the rear bearing member 61. The pinion support frame 8 includes the pinion 5, the front bearing member 60, and the rear bearing member 61, and the front end 8a is attached to the body portion 10 of the tunnel excavator S. It is configured to be detachably attached to and detachable from the drive device main body frame 2 so as to be supported by the fixed drive device main body frame 2. [Selection diagram] Fig. 1