Rapid switching device of automobile clamp

The utility model provides a quick switching device of an automobile clamp, which belongs to the technical field of automobile clamps and comprises a support table and a mounting frame mechanism, and two slide rail frames are mounted at the top of the support table; two containing grooves are formed in the portions, at one ends of the two sliding rail frames, of the supporting table, first positioning mechanisms are installed in the containing grooves, and each first positioning mechanism comprises a first compression spring and a first positioning shaft; the mounting frame mechanism comprises two sliding frames, a first positioning plate is mounted at one end of each sliding frame, a first positioning groove matched with the first positioning shaft is formed in each first positioning plate, a connecting plate is mounted between the two sliding frames, and a clamp plate is mounted at the top of the connecting plate; according to the device, the mounting frame mechanism at the bottom of the clamp plate, the sl