Disassembling and assembling chuck for mining jack

The utility model discloses a mining jack dismounting chuck, which belongs to the technical field of jack dismounting equipment and comprises a bottom plate and a connecting frame mounted on the bottom plate, a plurality of connecting plates are mounted on the connecting frame, threaded rods are mounted on the connecting plates, a connecting block is mounted at one end of each threaded rod, and a clamping block is mounted at one end of each connecting block. An outer rod is installed on the connecting block, an inner rod is installed on the outer rod in a sliding mode, a pressing plate is installed on the top of the inner rod, the inner rod is connected with the outer rod through an inserting rod, and a plurality of inserting grooves matched with the outer rod are formed in the inner rod. By arranging the multiple clamping blocks, the jack can be clamped and limited, the situation that the dismounting effect is affected by movement of the jack can be avoided, by arranging the pressing plate, one end of the ou