Auxiliary connecting device for main bearing pin and engine ball socket surface

An auxiliary connecting device for a main bearing pin and an engine ball socket surface comprises a guide ring, and the guide ring comprises a main bearing pin guide section and a ball socket connecting section; a guide hole is formed in the center of the guide ring; a horn mouth is arranged at the opening part of the guide hole and is positioned in the guide section of the main bearing pin; a step ring is arranged on the end face, away from the main bearing pin guiding section, of the ball socket connecting section. The step ring and the end face of the ball socket connecting section form a limiting face. When the guide ring is used, the guide ring is placed at the position of the ball socket surface of the engine, the step ring is clamped to the opening of the ball socket, the limiting surface abuts against the wall surface of the engine, and the main bearing pin can be inserted into the ball socket surface of the aero-engine from the guide hole of the guide ring. According to the utility model, the guide r