Quick-change mechanism for intelligent production line of automobile engine cylinder cover

The utility model discloses a quick-change mechanism for an intelligent production line of an automobile engine cylinder cover. The problems that in the prior art, the requirement for quick remodeling of a production line cannot be met, and an existing zero-point quick-changing clamp is complex in structure, high in cost, inconvenient to operate and low in repeated positioning precision are solved. The quick-change mechanism is characterized in that a daughter board is connected to a mother board through four quick-change clamps; the quick-change clamp comprises a tensioning sleeve; three uniformly distributed steel balls and connecting pins are arranged in the tensioning sleeve; a tensioning screw rod is mounted in the connecting pin; an inner hexagonal blind hole is formed in the top end of the tensioning screw rod; the bottom end of the tensioning screw rod is inserted into the middle of the three steel balls; the quick-change mechanism has the beneficial effects that the quick-change mechanism for the int