Turning assisting tool and turning device, and turning method using them

摘要

Provided is a turning assist tool that enables a turning operation for manually rotating a stationary shaft to be performed easily and quickly. A turning assisting tool for rotating a shaft, the tip of which is connected to one end of a coupling via a key, by a turning tool, wherein the annular main body is detachably attached to a peripheral surface of the shaft. And at least one engaging portion for engaging a turning tool formed on the outer peripheral edge of the annular main body; and a key groove formed on the inner peripheral edge of the annular main body and formed on the shaft. And a locking recess that can be locked to the locking key fitted into the lock key. [Selection] Fig. 16