Jacking device for automobile production line

The utility model relates to a jacking device for an automobile production line, which comprises a mounting frame, a fixing plate, a lifting plate, a lifting cylinder, a locking mechanism and a limiting mechanism, the fixing plate is mounted on the mounting frame, the lifting plate is positioned at the upper part of the fixing plate and is parallel to the fixing plate, and the lifting cylinder is mounted on the lifting plate. A plurality of guide columns are installed between the fixing plate and the lifting plate, the upper end of each guide column is fixedly installed on the lifting plate, and the lower end of each guide column penetrates through the fixing plate and is in sliding fit with the fixing plate. The utility model has the advantages that the locking mechanism is arranged, so that the positioning function of the lifting plate can be quickly realized, and when a product is jacked to a specified position and is welded or deeply processed, the problem that the lifting plate falls down due to the fact