Full-face heading machine edge hob fixing device and mounting method

The invention relates to a full face heading machine edge hob fixing device and an installation method, the fixing device is installed on a heading machine cutter head and used for fixing an edge hob (4), the fixing device comprises an L-shaped cutter holder (2) installed on the heading machine cutter head, and a fixing seat (1) detachably installed at the end of the cutter holder (2) and forming a U-shaped support with an L-shaped vertical plate of the cutter holder (2); the left end of a cutter shaft of the edge hobbing cutter (4) is clamped and mounted in a U-shaped mounting groove of the fixed seat (1) through a wedge block (7), and the right end of the cutter shaft of the edge hobbing cutter (4) is inserted and mounted on an L-shaped vertical plate of the cutter holder (2); the mounting method comprises the steps of mounting the fixed seat, inserting the right end of the cutter shaft, fixing the left end of the cutter shaft and locking the right end of the cutter shaft. The side hob fixing mode and the d