Stable supporting device of tracked vehicle

The utility model provides a self-locking supporting device of a tracked vehicle, relating to the technical field of vehicles for loading special objects and vehicle brake control systems. The self-locking supporting device of the tracked vehicle consists of an upper plate (1), a bracket I (2), an ejector sleeve (3), a lead screw nut (4), a lead screw (5), a bolt pin (6), a bracket II (7), a lower plate (8), steel nails (10), nail sleeves (11), a connecting shaft (12) and a handle (13), wherein the upper plate (1) is articulated with the lower plate (8) at one side of the middle of the lower plate (8) through the connecting shaft (12), the middle upper part of the upper plate (1) is connected with the ejector sleeve (3) by the bracket I (2) and is connected with the bracket II (7) which is fixedly connected with the other end of the lower plate (8) through the lead screw nut (4) and the lead screw (5) by using the bolt pin (6), the upper plate (1) and the lower plate (8) are in T-shaped cross, and the other t