Auxiliary device for installing piston rings

An auxiliary device for installing piston rings, and suitable for placing a piston ring around a piston, the device comprising:

• a mounting base comprising a platform, a first opening hole and an accommodating space, wherein the first opening hole communicates with the accommodating space;
• a first transmission device disposed in the accommodating space, wherein the first transmission device comprises:
• a first guide screw rod;
• a first sliding base slidably screwed on the first guide screw rod;
• and
• a first motor used to drive and to rotate the first guide screw rod, so as to move the first sliding base to slide downwardly and upwardly on the first guide screw rod;
• a first connecting rod disposed on the first sliding base, passing through the first opening hole and protruding from the platform, wherein the piston ring can be placed around the first connecting rod, and an external diameter of the piston ring while being placed around the first connecting rod is greater than an inner diameter of the first opening hole, wherein when the first connecting rod slides downwardly as the first sliding base moves, a top surface of the mounting base applies an action force to the piston ring, such that the piston ring can be pushed upwardly;
• and
• a first bracing structure detachably disposed on the first connecting rod, wherein an external diameter of the first bracing structure increases from one end connected to the first connecting rod to the other end, and the first bracing structure has a first placing space for accommodating the piston.