Automobile welding fixture with detachable and replaceable working table

The invention relates to the technical field of outer automobile welding clamps, and particularly discloses an automobile welding clamp with a detachable and replaceable working table top, which comprises a base, and the base is connected with a connecting plate through four telescopic cylinders. Through the detachable design of the first mounting plate and the second mounting plate outside the connecting plate, automobile elements needing to be welded can be pre-mounted, the mounting and dismounting time of the automobile elements in the welding process is shortened, welding slag can be crushed through rolling friction force between rollers, and the situation that the welding slag adheres and is difficult to clean is prevented; and the collecting mechanism can collect the welding slag, the design of two air bags can perform dustproof protection on the whole device, and in the whole transportation process of the device, the device can be prevented from being abraded through the air bags in the transportation