Vacuum oil quenching furnace cover body locking degree adjusting mechanism

The utility model relates to a vacuum oil quenching furnace cover body locking degree adjusting mechanism which comprises a cover body and an outer shell, a first connecting part is arranged on the end face of one end, close to the outer shell, of the cover body, a through hole is formed in the first connecting part, and a guide rod is inserted in the through hole in a sliding mode. The first connecting part is in threaded connection with a first fixing bolt used for fixing the guide rod and the first connecting part, the axis of the guide rod and the axis of the through hole are both coaxial with the outer shell, an abutting block is arranged on the peripheral wall of the outer shell and located on the moving path of the guide rod when the cover body is screwed, and the guide rod is provided with a first abutting face used for abutting against the abutting block. A first abutting surface used for abutting against the guide rod is arranged on the abutting block, a second abutting surface used for abutting aga