Portable connecting plate protection

The invention belongs to the technical field of mine cars, and particularly discloses a portable connecting plate protector which is characterized in that a plurality of pulleys are mounted on two sides of the bottom of a mine car body, the pulleys are embedded into a mine car track, a first support is fixedly screwed to the outer side of the mine car track, and a 40T chain is fixedly connected to the surface of the first support; the tail end of the 40T chain is fixedly connected with a second support, a connecting plate is fixedly connected to the inner side of the second support in a threaded mode, and mine car plug pins are fixedly welded to the two sides of the connecting plate. According to the portable connecting plate protection structure for the mine car, the mine car plug pins are inserted into hole channels corresponding to pulleys, and the situation that the mine car slides downwards can be prevented; by means of the first support and the second support which are detachable, the connected structur