Auxiliary automatic downhole cage lifting connection device of single-rope-winding type lifting system

The utility model discloses an auxiliary automatic downhole cage lifting connection device of a single-rope-winding type lifting system. The device comprises a base with the two ends provided with rotary tables. The rotary tables are each provided with a lifting platform and a supporting platform. The middle of the base is provided with a triangular rotary table with the two ends movably connected with connection rods respectively. The other ends of the connection rods are movably connected with the supporting platforms respectively. One side of the base is provided with a hydraulic oil cylinder, and a telescopic rod of the hydraulic oil cylinder is movably connected with one end of the triangular rotary table. The telescopic rod of the hydraulic oil cylinder is movably connected with the triangular rotary table, and the triangular rotary table is movably connected with the rotary tables, so that stretching out and drawing back of the telescopic rod can drive the triangular rotary table and the rotary tables to rotate, and finally the lifting platform is made to conduct stretching out and drawing back motions. When the lifting platform stretches out, a cage right presses the carrying platform, so that level docking of a mine car rail and a downhole transport roadway can be guaranteed, ingoing and outgoing of a mine car are facilitated, and the technical problems that in the prior art, the cage is large in displacement, a steel wire rope is short in service life, working efficiency is low, level docking cannot be achieved, and safety is poor are solved.